Patent Application
20080289085
The present invention relates to a protective helmet.
The invention has been primarily developed for use in equestrian activities such as horseracing, and will be described herein with particular reference to that application. However, it will be appreciated that the invention is not limited to such a field of use, and is generally applicable as a protective helmet for alternate purposes.
Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field.
Known protective helmets typically for equestrian activities consist of a protective shell that is secured to a user's head by way of a chinstrap. These helmets are designed to cover the most crucial regions of the head, but leave unprotected areas such as the chin, jaw and cheeks. Although helmets commonly used for other purposes offer considerable projection to these less crucial areas, they are generally unsuitable for equestrian activities. For any given sport it is usual for an independent authority to set helmet safely standards. Different standards applying to equestrian helmets—as compared for example with bicycle helmets—typically render other helmets unsuitable for equestrian use. Further, the weight and bulk of alternate protective helmets is often not tolerable for competitive equestrian activities.
For equestrian activities, a protective helmet typically requires particular deflection properties to at least in theory reduce the effect of an impact from a horse's hoof. The underlying rationale is that by deflecting an impacting hoof at an appropriate angle, a substantial component of the impact is directed away from the wearer's head. Deflection requirements are often written into equestrian helmet safety standards—for example the Australian and New Zealand AS/NZ 3838 standard.
Known chinstrap systems used in conventional helmets are by no means ideal. For example: the helmet is susceptible, during an impact, to being moved out of the intended alignment with the head. This misalignment is known to increase the risk of injury of the layer defining ah outermost surface substantially covering the exterior of the helmet. Preferably the upper portion is bulbous such that it substantially resembles a known equestrian helmet.
Preferably the outer casing layer includes an outer surface that substantially provides a predetermined deflection angle. Preferably this deflection angle is between 30 and 60 degrees. In a preferred embodiment the angle is about 45 degrees.
Preferably the outer casing layer is formed from materials including any one or more of:
In some embodiments the outer casing layer is hand-made. In other embodiments it is Injection moulded. Various manufacturing techniques are used among further embodiments.
Preferably, front shell includes a first fitting zone for engagement with the forehead region of the head and a second fitting zone for engagement with a chin region of the head. Preferably engagement with the chin region includes cupping the chin to substantially prevent movement about at least two axes. Preferably the first fitting zone is located on the upper portion and the second fitting zone is located on the lower portion. In some embodiments the second fitting zone is movable with respect to the first fitting zone. In one embodiment the second fitting zone is provided on a fitting member that is slidably movable along an adjustment path. Preferably the fitting member is releasably lockingly engagable at a plurality of locations on the adjustment path thereby to provide a respective plurality of selectable positions for the second fitting zone and in doing so provide a customizable fit.
Preferably the rear shell includes a third fitting zone for engagement with a posterior region of the head when the helmet is in the closed configuration to provide a three zone fitting system for securely containing the head within the helmet. More preferably the second fitting zone conforms to the jaw region to axially secure the helmet with respect to the head. Preferably a fourth fitting zone is inherently defined on each side of the helmet for engagement with regions at each side of the head to transversely secure the helmet with respect to the head.
Preferably the front and rear shells are lockingly engagable by a multiple point locking system. Preferably this is a three point locking system. More preferably the locking system includes an upper dorsal connection and two lower side connections. Preferably the upper dorsal includes a hinge such that the rear shell is hingedly connected to the front shell. More preferably the rear shell rotates about this connection to move the helmet from the closed configuration to the open configuration.
Preferably each side connection includes an adjustable connector mechanism for designating a selectable proximity between adjacent connector regions of the front and rear shells. Preferably the mechanism includes an elongate member selectively releasably lockingly engageable with a complimentary fitment. Preferably the front shell includes the member and the rear shell includes the fitment. In a preferred embedment the member extends progressively through the fitment upon the engagement to define a tail portion. Preferably the member is rotatable with respect to the front shell such that it remains within the fitment upon hinged rotation of the shells.
Preferably a tunnel is provided foe receiving and concealing the tail portion. In some embodiments the tunnel is defined by an inner shell mounted to and formed independently of the rear shell.
Preferably the fitments are moveable from a locked configuration in which the allowed passage of the member is unidirectional and an unlocked configuration, in which the allowed passage of the member is bi-directional. Preferably both fitments must be in the unlocked configuration for the helmet to move from the closed to open configuration. In one embodiment the fitments are binding latches and the members are complimentary binding straps.
Preferably the front shell includes an aperture for facilitating vision by the received head to the exterior of the helmet. Preferably this aperture extends approximately 240 degrees about a central axis of the helmet. More preferably this aperture is defined by a beaded periphery.
Preferably the helmet includes an opening for receiving a user's head when in the open configuration. More preferably relative movement of the front and rear shells adjusts user—for example if the temple region is exposed. In addition, chinstraps axe known to break. This results in further adverse positioning—or indeed inadvertent compete removal of the helmet. These chinstrap deficiencies apply not only to equestrian helmets, but also to a multitude of other known protective helmets.
It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.
In accordance with a first aspect of the invention, there is provided an equestrian helmet including:
Preferably the front shell includes a first edge complimentarily engageable with a second edge on the rear shell. More preferably the first and second edges include respective complimentary inter-engaging locating formations. Preferably these locating formations extend substantially along the length of the edges. In a preferred embodiment these locating formations are mutually locatingly engaged when the helmet is in the closed configuration to substantially transversely locate the front shell with respect to the rear shell. Preferably the locating formations are defined by the cross-sectional profiles of the first and second edges. Preferably one of the edges includes a beaded peripheral lip to define one of the complimentary locating formations and the other edge includes a recessed peripheral channel for receiving the lip to define the other complimentary locating formation. In one embodiment the second edge includes the peripheral lip. Preferably the first and second edges terminate substantially adjacent a stepped region of the helmet.
Preferably the helmet includes an upper portion and a lower portion connected by the stepped region. More preferably the upper and lower portions are each partially defined on the both of the front and rear shells. Preferably the helmet includes a casing the size of this opening. Preferably this opening is defined by a third edge of the front shell and a fourth edge of the rear shell. Preferably these edges are beaded.
Preferably the rear shell includes a lower support edge for engagement with a muscular region of a back defined on the body providing the head.
Preferably the front shell is hingedly connected to the rear shell. More preferably this hinged connection is provided by a hinge assembly provided at a dorsal location on the helmet. More preferably, when the helmet is in the closed configuration the hinge assembly is substantially contoured with the surface of the helmet. In a preferred embodiment the hinge assembly includes pin-receiving formations respectively extending from the front and rear shells. Preferably these formations are integrally formed from their respective shells. Preferably the pin-receiving formations include respective coaxially positionable apertures for receiving a common hinge pin. Preferably each pin-receiving formation extends in substantially constant contour with respect to an adjacent area of the respective shell.
Preferably each shell includes an outer casing layer and an inner lining layer. Preferably the lining layer includes a front lining layer on the from shell and a rear lining on the rear shell. Also preferably the inner lining layer includes a resilient padding material.
Preferably each lining layer includes an outer sub-layer and an inner sub-layer. Preferably the outer sub-layer is formed of a resilient material. More preferably the outer sub-layer mounts the lining layer to the casing layer.
Preferably the inner sub-layer is selectively detachable from the outer sub-layer. Preferably the lining layer is foam injectable. In some embodiments a cavity for receiving foam to facilitate foam injection is defined intermediate the inner sub-layer outer sub-layer. Preferably one or more resilient spacers extend between the sub-layers such that the helmet is centrally locatable on a head prior to foam injection. Typically the outer casing layer and lining layer include respective apertures such that foam is injectable through these layers and into the cavity.
Preferably a visor assembly is mountable to the helmet. More preferably this visor assembly is mountable to the front shell. Typically the visor assembly is removably mounted to the front shell.
In a preferred embodiment the visor includes sensing equipment. In some embodiments this equipment includes a camera. More preferably the equipment also includes a transmitter for transmitting a signal provided by the camera. In some embodiments the equipment includes position identification apparatus. Preferably this apparatus makes use of global positioning technology such as GPS.
In accordance with a second aspect of the invention, there is provided a protective helmet including:
Preferably the front shell includes a first edge complimentarily engageable with a second edge on the rear shell. More preferably the first and second edges include respective complimentary interengaging locating formations. Preferably these locating formations extend substantially along the length of the edges. In a preferred embodiment these locating formations are mutually locatingly engaged when the helmet is in the closed configuration to substantially transversely locate the front shell with respect to the rear shell. Preferably the locating formations are defined by the cross-sectional profiles of the first and second edges. Preferably one of the edges includes a beaded peripheral lip to define one of the complimentary locating formations and the other edge includes a recessed peripheral channel for receiving the lip to define the other complimentary locating formation. In one embodiment the second edge includes the peripheral lip. Preferably the first and second edges terminate substantially adjacent a stepped region of the helmet.
Preferably the helmet includes an upper portion and a lower portion connected by the stepped region. More preferably the upper and lower portions are each partially defined on the both of the front and rear shells. Preferably the helmet includes a casing layer defining an outermost surface substantially covering the exterior of the helmet. Preferably the upper portion is bulbous such that it substantially resembles a known equestrian helmet.
Preferably the outer casing layer includes an outer surface that substantially provides a predetermined deflection angle. Preferably this deflection angle is between 30 and 60 degrees. In a preferred embodiment the angle is about 45 degrees.
Preferably the outer casing layer is formed from materials including any one or more of:
In some embodiments the outer casing layer is hand-made. In other embodiments it is injection moulded. Various manufacturing techniques are used among further embodiments.
Preferably, front shell includes a first fitting zone for engagement with the forehead region of the head and a second fitting zone for engagement with a chin region of the head. Preferably the first fitting zone is located on the upper portion and the second fitting zone is located on the lower portion.
Preferably the rear shell includes a third fitting zone for engagement with a posterior region of the head when the helmet is in the closed configuration to provide a three zone fitting system for securely containing the head within the helmet. More preferably the second fitting zone conforms to the jaw region to axially secure the helmet with respect to the head. Preferably a fourth fitting zone is inherently defined on each side of the helmet for engagement with regions at each side of the head to transversely secure the helmet with respect to the head.
Preferably the front and rear shells are lockingly engagable by a multiple point locking system. Preferably this is a three point locking system. More preferably the locking system includes an upper dorsal connection and two lower side connections. Preferably the upper dorsal includes a hinge such that the rear shell is hingedly connected to the front shell. More preferably the rear shell rotates, about this connection to move the helmet from the closed configuration to the open configuration.
Preferably each side connection includes an adjustable connector mechanism fox designating a selectable proximity between adjacent connector regions of the front and rear shells. Preferably the mechanism includes an elongate member selectively releasably lockingly engageable with a complimentary fitment. Preferably the front shell includes the member and the rear shell includes the fitment. In a preferred embedment the member extends progressively through the fitment upon the engagement to define a tail portion. Preferably the member is rotatable with respect to the front shell such that it remains within the fitment upon hinged rotation of the shells.
Preferably a tunnel is provided for receiving and concealing the tail portion. In some embodiments the tunnel is defined by an inner shell mounted to and formed independently of the rear shell.
Preferably the fitments are moveable from a locked configuration in which the allowed passage of the member is unidirectional and an unlocked configuration in which the allowed passage of the member is bi-directional. Preferably both, fitments must be in the unlocked configuration for the helmet to move from the closed to open configuration. In one embodiment the fitments, are binding latches and the members are complimentary binding straps.
Preferably the front shell includes an aperture for facilitating vision by the received head to the exterior of the helmet. Preferably this aperture extends approximately 240 degrees about a central axis of the helmet. More preferably this aperture is defined by a beaded periphery.
Preferably the helmet includes an opening for receiving a user's head when in the open configuration. More preferably relative movement of the front and rear shells adjusts the size of this opening. Preferably this opening is defined by a third edge of the front shell and a fourth edge of the rear shell. Preferably these edges are beaded.
Preferably the rear shell includes a lower support edge for engagement with a muscular region of a back defined on the body providing the head.
Preferably the front shell is hingedly connected to the rear shell. More preferably this hinged connection is provided by a hinge assembly provided at a dorsal location on the helmet. More preferably, when the helmet is in the closed configuration the hinge assembly is substantially contoured with the surface of the helmet. In a preferred embodiment the hinge assembly includes pin-receiving formations respectively extending from the front and rear shells. Preferably these formations are integrally formed from their respective shells. Preferably the pin-receiving formations include respective coaxially positionable apertures for receiving a common hinge pin. Preferably each pin-receiving formation extends in substantially constant contour with respect to an adjacent area of the respective shell.
Preferably each shell includes an outer casing layer and an inner lining layer. Preferably the lining layer includes a front lining layer on the front shell and a rear lining on the rear shell. Also preferably the inner lining layer includes a resilient padding material.
Preferably each lining layer includes an outer sub-layer and an inner sub-layer. Preferably the outer sub-layer is formed of a resilient material. More preferably the outer sub-layer mounts the lining layer to the casing layer.
Preferably the inner sub-layer is selectively detachable from the outer sub-layer. Preferably the lining layer is foam injectable. In some embodiments a cavity for receiving foam to facilitate foam injection is defined intermediate the inner sub-layer outer sub-layer. Preferably one or more resilient spacers extend between the sub-layers such that the helmet is centrally locatable on a head prior to foam injection. Typically the outer casing layer and lining layer include respective apertures such that foam is injectable through these layers and into the cavity.
Preferably a visor assembly is mountable to the helmet. More preferably this visor assembly is mountable to the front shell. Typically the visor assembly is removably mounted to the front shell.
In a preferred embodiment the visor includes sensing equipment. In some embodiments this equipment includes a camera. More preferably the equipment also includes a transmitter for transmitting a signal provided by the camera. In some embodiments the equipment includes position identification apparatus. Preferably this apparatus makes use of global positioning technology such as GPS.
In accordance with a third aspect of the invention, there is provided a helmet for a jockey, the helmet including:
Preferably the front shell includes a first edge complimentarily engageable with a second edge on the rear shell. More preferably the first and second edges include respective complimentary interengaging locating formations. Preferably these locating formations extend substantially along the length of the edges. In a preferred embodiment these locating formations are mutually locatingly engaged when the helmet is in the closed configuration to substantially transversely locate the front shell with respect to the rear shell. Preferably the locating formations are defined by the cross-sectional profiles of the first and second edges. Preferably one of the edges includes a beaded peripheral lip to define one of the complimentary locating formations and the other edge includes a recessed peripheral channel for receiving the lip to define the other complimentary locating formation. In one embodiment the second edge includes the peripheral lip. Preferably the first and second edges terminate substantially adjacent a stepped region of the helmet.
Preferably the helmet includes an upper portion and a lower portion connected by the stepped region. More preferably the upper and lower portions are each partially defined on the both of the front and rear shells. Preferably the helmet includes a casing layer defining an outermost surface substantially covering the exterior of the helmet. Preferably the upper portion is bulbous such that it substantially resembles a known equestrian helmet.
Preferably the outer casing layer includes an outer surface that substantially provides a predetermined deflection angle. Preferably this deflection angle is between 30 and 60 degrees. In a preferred embodiment the angle is about 45 degrees.
Preferably the outer casing layer is formed from materials including any one or more of:
In some embodiments the outer casing layer is hand-made. In other embodiments it is injection moulded. Various manufacturing techniques are used among further embodiments.
Preferably, front shell includes a first fitting zone for engagement with the forehead region of the head and a second fitting zone for engagement with a chin region of the head. Preferably the first fitting zone is located on the upper portion and the second fitting zone is located on the lower portion.
Preferably the rear shell includes a third fitting zone for engagement with a posterior region of the head when the helmet is in the closed configuration to provide a three zone fitting system for securely containing the head within the helmet. More preferably the second fitting zone conforms to the jaw region to axially secure the helmet with respect to the head. Preferably a fourth fitting zone is inherently defined on each side of the helmet for engagement with regions at each side of the head to transversely secure the helmet with respect to the head.
Preferably the front and rear shells are lockingly engagable by a multiple point locking system. Preferably this is a three point locking system. More preferably the locking system includes an upper dorsal connection and two lower side connections. Preferably the upper dorsal includes a hinge such that the rear shell is hingedly connected to the front shell. More preferably the rear shell rotates about this connection to move the helmet from the closed configuration to the open configuration.
Preferably each side connection includes an adjustable connector mechanism for designating a selectable proximity between adjacent connector regions of the front and rear shells. Preferably the mechanism includes an elongate member selectively releasably lockingly engageable with a complimentary fitment. Preferably the front shell includes the member and the rear shell includes the fitment. In a preferred embedment the member extends progressively through the fitment upon the engagement to define a tail portion. Preferably the member is rotatable with respect to the front shell such that it remains within the fitment upon hinged rotation of the shells.
Preferably a tunnel is provided for receiving and concealing the tail portion, in some embodiments the tunnel is defined by an inner shell mounted to and formed independently of the rear shell.
Preferably the fitments are moveable from a locked configuration in which the allowed passage of the member is unidirectional and an unlocked configuration in which the allowed passage of the member is bi-directional. Preferably both fitments must be in the unlocked configuration for the helmet to move from the closed to open configuration.
In one embodiment the fitments are binding latches and the members are complimentary binding straps.
Preferably the front shell includes an aperture for facilitating vision by the received head to the exterior of the helmet. Preferably this aperture extends approximately 240 degrees about a central axis of the helmet. More preferably this aperture is defined by a beaded periphery.
Preferably the helmet includes an opening for receiving a user's head when in the open configuration. More preferably relative movement of the front and rear shells adjusts the size of this opening. Preferably this opening is defined by a third edge of the front shell and a fourth edge of the rear shell. Preferably these edges are beaded.
Preferably the rear shell includes a lower support edge for engagement with a muscular region of a back defined on the body providing the head.
Preferably the front shell is hingedly connected to the rear shell. More preferably this hinged connection is provided by a hinge assembly provided at a dorsal location on the helmet. More preferably, when the helmet is in the closed configuration the hinge assembly is substantially contoured with the surface of the helmet. In a preferred embodiment the hinge assembly includes pin-receiving formations respectively extending from the front and rear shells. Preferably these formations are integrally formed from their respective shells. Preferably the pin-receiving formations include respective coaxially positionable apertures for receiving a common hinge pin. Preferably each pin-receiving formation extends in substantially constant contour with respect to an adjacent area of the respective shell.
Preferably each shell includes an outer casing layer and an inner lilting layer. Preferably the lining layer includes a front lining layer on the front shell and a rear lining on the rear shell. Also preferably the inner lining layer includes a resilient padding material.
Preferably each lining layer includes an outer sub-layer and an inner sub-layer. Preferably the outer sub-layer is formed of a resilient material. More preferably the outer sub-layer mounts the lining layer to the casing layer.
Preferably the inner sub-layer is selectively detachable from the outer sub-layer. Preferably the lining layer is foam injectable. In some embodiments a cavity for receiving foam to facilitate foam injection is defined intermediate the inner sub-layer outer sub-layer. Preferably one or more resilient spacers extend between the sub-layers such that the helmet is centrally locatable on a head prior to foam injection. Typically the outer casing layer and lining layer include respective apertures such that foam is injectable through these layers and into the cavity.
Preferably a visor assembly is mountable to the helmet. More preferably this visor assembly is mountable to the front shell. Typically the visor assembly is removably mounted to the front shell.
In a preferred embodiment the visor includes sensing equipment. In some embodiments this equipment includes a camera. More preferably the equipment also includes a transmitter for transmitting a signal provided by the camera. In some embodiments the equipment includes position identification apparatus. Preferably this apparatus makes use of global positioning technology such as GPS.
In accordance with a fourth aspect of the invention, there is provided a method for protecting a head including the steps of:
According to a fifth aspect of the invention, there is provided a protective helmet including:
According to a sixth aspect of the invention, there is provided a system for monitoring the path of a jockey, the system including:
Preferably the locating device is mounted to a helmet. More preferably the helmet is a helmet in accordance with any one of the preceding aspects of the invention.
In some embodiments the locating device is a camera such that representation is visual. Preferably this camera provides a camera signal indicative of sequential image frames. More preferably the locating device further includes a transmitter for receiving the camera signal and providing this signal to a remote host. In some embodiments the remote host is the interface. In other embodiments the remote host is in communication with the interface. In some cases the remote host includes a plurality of geographically spaced hosts.
In some embodiments the locating device provides a signal indicative of positional information. Typically this involves the use of GPS triangulation. In some such embodiments the processor provides a representation indicative of the approximate of the path followed by the horse and jockey.
According to a further aspect of the invention there is provided a method for monitoring the path of a jockey, the method including the steps of:
A preferred embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:
is a schematic sectional view of a helmet, show in the closed configuration on a head.
Referring to the drawings, it will be appreciated that, in the different figures, corresponding features have been denoted by corresponding reference numerals.
Although the present disclosure is particularly concerned with equestrian applications of the invention, it will be appreciated that these are not to be regarded as limiting in any way. In other embodiments the helmet is used for alternate activities, such as other sports. In some embodiments the helmet is adapted for specific military use. Those skilled in the relevant arts will recognise how helmet 1 is modified or adapted for alternate applications, and moreover which of the embodiments described herein are most suited to alternate applications.
For the purpose of this disclosure, head 4 being “securely contained” within helmet 1 denotes that head 4 is not removable from helmet 1. Preferably, it also denotes a level of maintained alignment between head 4 and helmet 1. This predefined alignment is maintained such that the helmet is substantially not movable with respect to the head. This includes axial rotation, transverse movement, and indeed shifting about substantially any axis. To remove head 4 from helmet 1, it is first necessary to move the helmet out of the closed configuration.
Other than shells 2 and 3, there are two general visually distinguishable portions of helmet 1. These are an upper portion 6 and a lower portion 7. These are not by any means discrete and separable—the distinction is generally notional. That is, the portions are identified primarily descriptive purposes. Portions 6 and 7 each include portions of shells 2 and 3. A stepped region 20 connects upper portion 6 and a lower portion 7. A groove 21 is provided on and generally identifies the location of region 20 to facilitate the retention of a strap for securing goggles or other eyewear. In some embodiments, such as the embodiment shown in
Helmet 2 is fitted to head 4 using a three-point fitting system. This involves abutting engagement between helmet 1 and three regions of head 4. Presently, these are the forehead region 10, chin region 11, and a posterior region 12. This three-point fitting is best shown in
Shell 2 includes a first fitting zone 13 for engagement with region 10. This zone 13 is found on portion 6. Shell 2 also includes a second fitting zone 14 for engagement with region 11. Fitting zone 14 is located on portion 7. Zone 14 conforms to the jaw region of head 4 to axially secure the helmet with respect to an axis generally defined by the neck of head 4. Shell 3 includes a third fitting zone 15 for engagement with region 12 when helmet 1 is in the closed configuration.
In the present embodiment, the fitting zones are provided by a resilient material, presently in the form of a foam 24 which compresses between a casing layer 25 and an inner lining 26. Appropriate foams or alternate resilient materials will be recognised by those skilled in the art. For example, some embodiments make use of materials conventionally used in safety helmets—such as expanded polystyrene (EPS).
In the present embodiment foam 24 compresses to substantially conform to its adjacent region 10 to 12 in a three-dimensional manner. It will be recognised that concurrent engagement with these three zones provides the secure engagement of helmet 1 to head 4.
In some embodiments foam 24 is first injected following insertion of head 4 to provide a customised fit. Using such a customised fit system inherently provides further fitting zones. Indeed, generally the entire inner surface of lining 26 is to some degree a fitting zone. This foam injection is carried out once only for a given helmet, and provides that helmet with a customised fit for the specific head 4 used. Foam injection is discussed in greater detail further below.
In some embodiments where customised a foam injection technique is not used, specific attention is paid to foam adjacent regions 10 to 12 such that adequate fitting zones are provided. For example, in some embodiments removable padding portions are provided for insertion inside the helmet at the fitting zones; these padding portions being provided in a plurality of sizes to allow a relatively customizable fit. In some embodiments these removable padding portions are mountable to an interior surface of the helmet using the likes of Velcro or an adhesive. In some embodiments the removable padded portions are formed of a more readily compressible material than the portion of the helmet to which they are to be mounted, as is common in some bicycle helmets. In some cases additional fitting zones are defined. For example, specific zones for engagement with the opposite sides of head 4.
It will be appreciated that, in embodiments that do not make use of a customised foam injection technique, alternate techniques are implemented to provide a degree of flexibility to the fitting zones and in doing so reduce the extent of difficulties in appropriately locating the three fitting zones to provide a suitable fit on a particular person's head. For example, some embodiments provide relatively resilient fitting zones that are able to compress for conforming to various head sizes, and some embodiments allow incremental movement of at least one of the fitting zones.
Chin cup 102. This is similar to chin cup 102 however, rather than using Velcro, alternate engagement formations in the form of press-studs 107 are used. Typically two press-Studs are provided on each side of the chin cup to inhibit rotation about the studs, and an array of press-stud receiving formations provided on casing 25 for providing alternate fitting positions.
Chin cup 103. This chin cup interfaces with casing 25 by way of complementary toothed straps 108 and latches 109. This allows the chin cup to be slidably moved along an adjustment path whilst the helmet is worn thereby to conveniently find a good fit even once the helmet is being worn in the closed configuration. The use of such straps/latches means that the chin cup is releasably lockingly engagable at a plurality of locations on the adjustment path thereby to provide a respective plurality of selectable positions for the second fitting zone and in doing so provide a customizable fit. In the illustrated embodiment two latches 109 are provided at each side, although in some embodiments only one latch is provided at each side. It will be appreciated that where latches are to be mounted to the chin cup, it is preferable for these to be mounted to a rigid outer surface of that chin cup.
It is preferable to maintain at least a 5 mm to 25 mm spacing intermediate the outer side of a chin cup or other region for chin engagement and the hard shell at the front of the helmet. The rationale is to allow some limited but resiliently opposed movement of the jaw so as to reduce the risk of jaw injury from a frontal impact. That is, the jaw is able to move through a relatively small distance prior to being subjected to harsh resistance from the stiff outer shell of the helmet. In some embodiments this limited movement allows for the user to speak with less difficulty. An example is shown in
Referring again to
Helmet 1 in the present embodiment retains a semblance of a known equestrian helmet. That is, because of the size and bulbous shape of portion 6 and relatively recessed nature of portion 7, helmet 1 retains general external geometrical properties of a known equestrian helmet. This is particularly useful in that it allows the mounting of known coverings such as skins previously used for rider identification in competitive events. Further, it inherently provides closer conformity with existing equestrian helmet safety standards that may be in place. It will be appreciated that helmet 1 at least arguably exceeds such standards given the additional protection provided to the cheeks, jaw, and chin. In some embodiments, including other embodiments intended for equestrian applications, the bulbous shape is set aside in favour of a more streamlined profile, for example as is shown in
The outer surface of casing 25 substantially provides a predetermined deflection angle. Typically this angle is between 30 and 60 degrees, and in the present embodiment it is about 45 degrees. This is particularly useful in equestrian activities given the desire to deflect an incoming hoof, however it is similarly useful in other applications. It will be appreciated that not every point on the casing need precisely provide this deflection property, however the casing substantially provides the property as a whole. The level of deflection protection warranted or required is in some situations a matter of preference, or in other situations set by an independent standard.
Shells 2 and 3 are lockingly engagable by a multiple point locking system, in this embodiment being a three point locking system. This locking system involves three discrete components: a dorsal hinge assembly 2S, and two side binding-type connection mechanisms 29.
Hinge assembly 28 hingedly connects shell 2 to shell 3 such that movement of the shells between helmet configurations generally involves relative rotation about an axis defined by hinge pin 30. When the helmet is in the closed configuration, assembly 28 is substantially contoured with the surface of the helmet. That is, assembly 28 does not substantially protrude to affect the overall deflection angle of the helmet. Further, where hinges protrude there is a risk of hoof impact breaking the joint and unintentionally releasing helmet 1 from head 4.
Hinge assembly 28 includes pin-receiving formations 31 and 32 respectively integrally formed with shells 2 and 3. These formations include respective coaxially positionable apertures for receiving hinge pin 30. Each pin-receiving formation extends in substantially constant contour with respect to an adjacent area of the respective shell, as best shown in
More precisely, shell 2 includes two formations 31 which, in use, coaxially sandwich a complimentary formation 32 of shell 3. Pin 30 is inserted through the respective apertures to define the hinged connection. In other embodiments formations 31 are provided on shell 3 and formation 32 on shell 2.
In the illustrated embodiment pin 30 includes a bent end portion 34 for convenient finger engagement to facilitate the extraction of pin 30. This, in turn, facilitates complete separation of the shells. This is practically useful in situations where it is necessary to remove helmet 1 from head 4 either urgently or with extreme caution—following an accident, for example. In particular, removal of helmet 1 by complete separation of shells 1 and 2 is typically preferable where spinal injuries are suspected.
In use, end 34 is maintained within a specially formed receiving channel 35 such that the general external contour of casing 25 is substantially unaffected. In some embodiments a cover (not shown) is provided for end 34 to reduce the risk of accidental or recalcitrant extraction of pin 30. In some cases this cover is only removable once and not replicable. This provides evidence of tampering or pin extraction. For example, the cover is removed following an accident to indicate that helmet 1 is no longer suitable for future usage.
In some embodiments pin 30 is not conveniently removed, for example in embodiments where more traditional hinging techniques are used. These embodiments preferably make use of a similar integrally formed and smoothly contoured hinge assembly 28 to retain the associated advantages.
In other embodiments alternate dorsal hinge assemblies are used as alternatives to the present dorsal hinge assembly 28. Some examples are provided in
Referring again to
Each mechanism 29 is resembles a mechanism commonly used in relation to snowboard bindings. That is, each mechanism 29 includes a binding latch 40 and complimentary corrugated binding strap 41. Strap 40 is rotatable mounted with respect to shell 2 such that it is able to remain within binding latch 40 upon relative hinged rotation of the shells.
Each binding latch 40 is moveable from a locked configuration in which the allowed passage of strap 41 is unidirectional and an unlocked configuration in which the allowed passage of strap 41 is bi-directional. It will be appreciated that helmet 1 is movable into the closed configuration regardless of the configuration of each binding latch 40. However, to conveniently move helmet 1 out of the closed configuration it is necessary to have both bindings 40 in the unlocked configuration. This further reduces the risk of accidental removal of helmet 1.
As the helmet closes, binding strap 41 progresses through binding latch 40 to define a tail portion 43. An aperture 48 is provided on stepped region 20 such that tail portions 43 are received in the interior of helmet 1. A tunnel 49 is provided for receiving and concealing the tail portions. In some embodiments, the tunnel is defined by an inner shell mounted to and formed independently of the rear shell. The rationale for independent formation is a matter of construction and will be understood by those skilled in the art.
The described locking system should not be regarded as limiting in any way, and alternate locking systems are used in other embodiments. For example, in some embodiments shells 2 and 3 are adapted for resilient snap-locking engagement. In other embodiments a tie is used to maintain the helmet in the closed configuration. In one embodiment three binding-type mechanisms are used, the third of these replacing hinge assembly 28. In some cases latches 40 and straps 41 are reversed between the shells. Those skilled in the art will understand and readily implement these and other alternate locking mechanisms.
Shell 2 includes a first edge 50 complimentarily engageable with a second edge 51′ on shell 3. Edges 50 and 51 include respective complimentary interengaging locating formations 52 and 53. These extend substantially along the length of edges 50 and 51, generally speaking from the stepped region 20 on one side to the stepped region 20 on the other side, with a brief gap at the location of hinge assembly 28. Formations 52 and 53 are locatingly engaged when the helmet is in the closed configuration to substantially transversely locate the front shell with respect to the rear shell. It will be appreciated that this increases the structural rigidity of helmet 1 when in the closed configuration. Formations 52 and 53 are defined by the cross-sectional profiles their respective edges 50 and 51. This is best shown in
Formation 53 is in the form of a beaded peripheral lip on edge 51. Formation 52 defines a recessed peripheral channel along edge 50 for receiving the beaded lip. In this embodiment the lip does not snap lockingly engage within the channel, however movement is substantially restricted due to close conformity of components. In one embodiment, the beaded lip has a maximum width dimension of about 7.5 mm and the cannel has a diameter of about 9 mm. The channel is about 9 mm deep, and the Hp is of slightly less depth.
It will be appreciated that alternate positioning or selection of mechanisms 25 facilitates extension of formations 52 and 53 beyond stepped region 20. For example, by mounting straps 41 to the exterior of shell 2.
Variations of formations 52 and 53 are used in other embodiments, such as those illustrated in
Another interlocking edge arrangement is provided in
Referring again to
Opening 55 is partially defined by a lower support edge 58 of shell 3. This edge is approximately spatially configured for engagement with a muscular region of aback defined on the body providing head 4. Further, the illustrated edge 58 approximately conforms to a complimentary edge of a known protective vest where such a vest is conjunctively used. In some, embodiments an additional protector 92 is attached to helmet 1 to provide additional protection to a user's neck and back. For example, a rigid protective flap is hingedly connected to shell 3 by rivets 93, as shown in
Casing 25 provides impact resistance and deflection properties, and lining layer 60 provides padding and the three-point fit.
In the present embodiment, inner lining 26 is spaced apart from the inner surface of casing 25 to define a cavity 65 for receiving foam 24 during foam injection. In some embodiments an additional layer (not shown) is provided intermediate cavity 65 and casing 25, this layer being glued to casing 25. In further embodiments this additional layer includes a pre-moulded foam layer to reduce the amount of foam 24 required during the injection process. For example, a 15 mm layer.
Several resilient foam spacers 66 are provided in cavity 65 such that helmet 1 is comfortably and accurately positionable on head 1 prior to foam injection. This positioning will be understood by those skilled in the art, and typically helmet 1 is provided with an instruction manual to assist a user realise this positioning in practice. The rationale is that a user performs foam injection following purchase of helmet 1.
The width of cavity 65 varies between embodiments. Typically an average width of between 25 and 35 millimetres is suitable for general equestrian protection. The width determines the amount of padding provided, although the size of head 4 also plays a role. That is, for a given helmet 4, more padding is provided for a smaller head, whilst less padding is provided for a larger head. In some cases different sizes of casing 25 are manufactured to suit a wide range of head sizes such that a threshold level of padding is provided in most if not all cases.
To foam inject liner 60, helmet 1 is first placed on head 4 and locked in the closed configuration. At this time there is some ability to move helmet 1 on head 4 given that effective three-point fitting is not yet provided. Spacers 66 loosely hold helmet 1 in a desired position. Quick hardening liquid foam 24 is provided in a can 68. Once helmet 1 is positioned in an appropriate comfortable alignment on head 4, foam 24 is injected into apertures 69 provided on shell 2 and shell 3. Typically there are two apertures on shell 2 and a single aperture on shell 3. It will be appreciated that cavity 60 includes a first portion on shell 2 and a distinct second portion on shell 3 given that the shells are distinct The foam is continuously injected until cavity 65 is filled. This event is marked by either a predetermined quantity of foam being injected or by a noticeable overflow. The foam will then harden and expand, excess foam being expelled through apertures 69. The hardening foam expands to press and retains lining 26 against adjacent regions of head 4 to provide a customised and relatively exact fit, and provide the three point fitting system. After a predetermined curing period, typically about five minutes, the foam is sufficiently hard such that helmet 1 is removable from head 4. This excess foam is easily removed, and the apertures plugged. Those skilled in the art will recognise benefits associated with customised foam injection fitting.
As mentioned, a consumer typically carries out this foam-injection process following purchase of helmet 1. In other embodiments alternate linings 60 are provided with do not require foam-injection, and these typically include a foam layer in lining layer 60 at the time of purchase. That is, these helmets are ready for use off the shelf. Although the fit is inherently less ideal as compared with foam injection, the cost savings are typically substantial.
In the present embodiment, casing 25 is formed of a Kevlar/graphite weave. These materials are particularly well suited given their high levels of strength and relatively low weights. The manufacturing process involves the making of a split mould for shell 2 and a separate mould for shell 3. In, some embodiments where a separate inner shell is used to define-tunnel 49 that inner shell requires its own mould.
The moulds are each cleaned and jelled with a release agent in preparation for a layering process of woven Kevlar and graphite layers. Three layers are laid into the shell 2 section of the split mould and resin is applied upon placement of each layer to best ensure that no air bubbles form between the woven layers. The same is done in relation to the other section or sections.
In edges of the helmet are typically double layered, which equates to a six-layer edge, which in turn giver superior strength to all edges of the helmet. The layering process is critical to the strength of the helmet, and special attention is paid to all moulded edges to ensure optimum strength. Doubling the layers from three to six layers on the edge best ensures strength in all directions of compression.
In one embodiment, about six hours the resin has cured sufficiently to enable shell 2 and 3 sections of casing 25 to be released from their respective moulds. In other embodiments this time period varies, often relative of the resin used. The moulds are then cleaned and release agent applied for subsequent use.
The shell-based components of hinge assembly 28 are moulded into the edges of both shell 2 and shell 3 regions of casing 25 during the initial layering process to facilitate both hinge strength and concealment.
Once casing 25 is formed, mechanisms 29 are attached by way of washers and alloy pop rivets 67. It is typically preferable to test these mechanisms prior to install lining layer 60.
Typically, appropriate split moulds are formed of fibreglass and resin, however a number of different types of materials can be used to make these moulds depending on manufacturing objectives such as throughput, cost and quality. Some mould materials will produce more shells than others due to reduced wear.
Manufacturing of casing 25 by such methods is relatively expensive and time consuming. However, the overall strength, weight, and quality of the helmet 1 produced are of superior levels. In same embodiments alternate moulding techniques used to save costs and time, injection molding is a prime example. Other materials particularly well suited to the construction of casing 25 include polycarbonates and bulletproof resins. It will be appreciated that the latter is most suitable for military applications.
Once manufacture of a casing 25 is completed, and assuming foam injection is to be used, the next step is to glue and mould inner lining 26 to casing 25 such that cavity 65 is defined. A dummy head is used to position lining 26, and 25 mm spacers 66 are applied at about five points on the inner surface of casing 25 to preserve cavity 65 and assist fitting. The helmet is typically then packaged with fitting instructions, foam injection tools such as foam canisters and tubing, and prepared for sale.
In embodiments where foam injection is not used, it is typically necessary to manufacture a variety of linings 60 to accommodate various head sizes. These linings are typically formed inclusive of a preselected amount of resilient foam 24 or rubber prior to insertion and adhesion in casing 25. Such processes are known in the art, and will be understood by skilled addressees.
In some embodiments, a visor assembly 70 is mountable to helmet 1, typically on shell 2. For equestrian applications, this visor is mounted such that impact from a hoof causes substantially instant detachment. This reduces the effect of visor 70 on deflection properties. The visor is typically substantially formed from similar materials to casing 25.
In the embodiment of
Visor 70 is preferably used for the purpose if providing “jockey-cam” footage of horseracing events. The visor 70 is attached to a helmet 1 of a jockey 72.
In such an implementation, weight minimisation is a primary concern. As such, a relatively lightweight transmitter 73—preferably less than 300 grams—is selected. This typically equates to a short transmission range.
In the embodiment of
It will be appreciated that footage obtained through visor 70 is used for alternate purposes, such as assessing protest results.
In another embodiment, a small GPS disc or alternate locating device is mounted in helmet 1 or visor 70. Where the GPS disc is mounted to helmet 1, it is preferably removable. A rechargeable battery is provided to provide power to the GPS disc.
The disc provides a signal that is provided via satellite to a software system, which in turn records the helmet's movement. In one implementation, this is used to provide a protest resolution system for a race. Each jockey in the race wears a helmet 1 having a GPS disc, and movements of the jockeys (and their respective horses) throughout the race is converted into a visual digital representation. For example, a racetrack 80 is mapped and then placed on a scaled grid system 81, as shown in
For example, a protest is lodged between jockeys A, B, and C. The system prepares a representation of the paths of these jockeys and their respective horses on the basis of GPS positioning information. The paths for jockeys A, B and C axe marked on
It will be appreciated that having a complete image of the exact course all of jockeys A, B and C during the race reduces the effect of human error whilst assessing protest results.
GPS technology is also used for further purposes, such as assessment of the motion of a jockey in a fall or horse velocity and or acceleration calculations.
Variations on helmet 1 are used for alternate applications or to provide further advantages. For example, in some embodiments ventilation holes are provided. In some cases a ventilation hole is positioned proximal the ear to improve hearing whilst wearing the helmet. In some cases the ventilation holes assist the foam injection process, although it is typically preferable to place a protective membrane on the inside of the holes during the injection process. The rationale is to substantially prevent foam from contacting directly with head 4.
Ventilation cover 131 is a removable rigid component that is lockingly engageable with casing 25. Ventilation cover 131 is typically formed of a rigid material such as Kevlar or fibreglass, although plastics may be used as an alternative. In this embodiment casing 25 includes a recessed central portion that, upon locking engagement of cover 131, provides an internal compartment that may optionally be used to store cameras, GPS modules, and the like. In the present embodiment casing 25 includes a plurality of ventilation holes 134 that allow airflow communication between this internal compartment and the interior of the helmet. Additionally, cover 131 includes a plurality of ventilation apertures 132 for serving as air as inlets and outlets, depending on the direction of travel of the helmet. These apertures are typically curved and/or angled to maximise airflow. In use, air is withdrawn though the forward ones of these apertures 132 and discharged via the rear ones of these apertures 132. Intermediate the forward and rear apertures, the flow of air leads to a vacuum/venturi effect that serves to cool a user's head through the apertures in casing 25.
In the present embodiment the centra recessed portion in casing 25 includes a peripheral fitment 135 for receiving a correspondingly profiled edge 136 of cover 131. As such, upon engagement of cover 131 with casing 25, cover 131 effectively includes a countersunk locking-edge. In some embodiments this edge continues about the entire periphery of cover 131, however in ether embodiments it has broken portions to facilitate convenient connection/removal of the cover. In other embodiments alternate locking techniques are used for facilitating connection of the cover to the helmet casing.
Cover 131 provides a dual crash zone to helmet 131. The general notion is that, in the event of a harsh impact by an object to cover 131, the cover will in all likelihood break and fail prior to the object impacting on casing 25. This is thought to significantly reduce the risk of injury to a wearer due to the degree to which impact forces would be distributed and absorbed by the operation of casing 131.
The embodiments of
An optional visor assembly 155 is attachable to helmet 150, this assembly carrying a camera, GPS unit, and one or more power supplies for powering these and other components. For example, in one embodiment an electronic eye display is projected onto the visor.
Another special feature of helmet 150 is a suspended fitting system. In this embodiment a three point fit is provided by a chin cup as described above, localised regions of EPS 159 on shell 3, and a suspended mesh fitting formation 157 in shell 2. Fitting formation 157 includes a mesh 158 for engagement with the top and front of the wearer's head, and this is typically adjustable to provide a customised fit for a variety of head sizes. Similar suspended fitting formations are common in helmets made for the construction industry, and provide a cavity intermediate the formation and helmet shell such that impacts may be dealt with by resilience in the fitting formation as opposed to a resilient liner in the shell. To this end, the formations are typically formed materials such as Kevlar or nylon. An added benefit is improved airflow within the helmet due to empty space above the head. The spacing between the wearer's head and the helmet shell is typically maintained at between 25 mm and 100 mm, more usually between 25 mm and 50 mm.
Other applications for which variations of helmet 1 and other helmets described herein are suited include rock climbing, snow sports, water sports, cycling, skateboarding, martial arts and similar body contact sports, skydiving, motor racing, recreational motor bike usage, military purposes, and so on. Those skilled in the art will recognise various modifications made to helmet 1 that increase suitability for these and other applications.
It should be appreciated that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, Figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.
Furthermore, while some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention; and form different embodiments, as would be understood by those in the art. For example, in the following claims, any of the claimed embodiments can be used in any combination.
Thus, while there has been described what are believed to be the preferred embodiments of the invention, those skilled in the art will recognize that other and further modifications may be made thereto without departing from the spirit of the invention, and it is intended to claim all such changes and modifications as fall within the scope of the invention. That is, although the invention has been described with reference to a specific example, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2005906523 | Nov 2005 | AU | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/AU2006/001770 | 11/23/2006 | WO | 00 | 5/21/2008 |
