This application claims priority to UK patent application GB1121276.8, filed on Dec. 9, 2011, the entire contents of which are incorporated herein by reference.
Embodiments of the present invention relate to apparatus for gardening.
BACKGROUND TO THE INVENTION
Garden tools, such as rakes, hoes, forks and spades are commonly stored in garden sheds or other garden buildings or storage areas and have the disadvantage of being elongate and generally difficult to store. In addition rakes, hoes and similar such tools can cause a health and safety hazard due to the traditional configuration of the rake head and handle being such that a traditional rake presents the possibility of a person accidentally stepping on the head of a rake located on the ground causing the rake handle to lever up and strike the person, potentially causing harm to that person.
According to various, but not necessarily all, embodiments of the invention there is provided apparatus for gardening comprising, an elongate handle, a tool head located at one end of the handle to extend at least in part at an angle to the lengthwise axis of the handle, the elongate handle being arranged to enable selective movement thereof from an extended condition to a contracted condition.
The handle may comprise a plurality of sections arranged to be selectively movable relative to each other. At least some of the sections may be relatively movable generally along the lengthwise axis of the handle.
At least some of the sections may be telescopically arranged to enable selective telescopic movement therebetween.
Alternatively or in addition at least some of the sections may be mutually detachable to enable the handle to be at least partly selectively broken down into sections.
Alternatively or in addition at least some of the sections may be pivotally interconnected to enable selectively pivotal movement therebetween.
Securing means may be provided to secure some or all of the sections in relative position, particularly when arranged so that the elongate handle is in the extended condition and may be also when the handle is in the contracted condition.
The securing means may comprise retaining means to releasably retain some or all of the sections in relative fixed location when the handle is in at least one of the extended or contracted conditions.
The securing means may comprise locking means to releasably lock some or all of the sections in relative fixed location when the handle is in at least one of the extended or contracted conditions.
At least one section may be retained or locked, particularly against longitudinal movement, relative to at least one other section using the securing means.
The securing means may comprise a compression fitting configured to releasably clamp one section to an adjacent section.
The securing means may be removably or permanently fixed to at least one section.
The securing means may comprise a detent arrangement comprising a projection arranged on one section and a means for retaining the projection of the detent arrangement on another section.
The projection of the detent arrangement may comprise a ball or pin, projecting from the side, generally at one end, of the one section.
The projection may be resiliently biased to project from the side of the one section, such as by way of spring arrangement, to be movable into the side to enable location of said another section over the one section for the projection to resiliently engage with the means for retaining.
The means for retaining the projection of the detent arrangement may comprise a concavity or aperture in the side of the said another section.
The tool head may comprise a rake head having a plurality of tines, one or more of which extends, at least in part, at an angle to the lengthwise axis of the handle.
The tool head may comprise a hoe or other tool head that extends, at least in part, at an angle to the lengthwise axis of the handle.
The angle may be between 45 degrees and 135 degrees to the lengthwise axis of the handle. The angle may be between 60 degrees and 120 degrees to the lengthwise axis of the handle. The angle may be between 75 and 105 degrees to the lengthwise axis of the handle. The angle may be substantially 90 degrees to the lengthwise axis of the handle.
The handle when in the contracted condition may be no longer than 1 meter. The handle in the contracted condition may be no longer than 0.8 meter. The handle in the contracted condition may be no longer than 0.5 meter.
According to a further embodiment of the invention there is provided an elongate handle for connection to a tool head, the elongate handle being arranged to enable selective movement thereof from an extended condition to a contracted condition.
The handle may be as described in any of the preceding paragraphs.
The present invention provides apparatus 10 for gardening comprising, an elongate handle 12, a tool head 18 located at one end of the handle 12 to extend at least in part at an angle to the lengthwise axis of the handle 12, the elongate handle 12 being arranged to enable selective movement thereof from an extended condition to a contracted condition.
The present invention further provides an elongate handle 12 for connection to a tool head 18, the elongate handle 12 being arranged to enable selective movement thereof from an extended condition to a contracted condition.
In an example of the invention, shown in
The outer diameter of the first section 14 is smaller than the inner diameter of the tubular second section 16 such that the first section 14 may be selectively, slidingly moved in both inward and outward directions within the tubular second section 16 in a telescopic manner. Such movement enables the first section 14 to be selectively inserted and retracted from the second section 16 between a fully contracted condition, as shown in
In an alternative telescopic arrangement the outer diameter of a tubular first section 14 may be larger than the inner diameter of a second section 16 such that the second section 16 may be inserted into the tubular first section 14 to provide a contracted condition for the rake 10, or extended therefrom to provide an extended condition for the rake 10.
A releasable securing means 22 comprises locking means such as a clamp means to secure the first section 14 in a position relative to the second section 16.
A second end 28 of the first component 23 of the compression clamp means 22 is arranged to project beyond the end 26 of the second section 16. The second end 28 of the first component 23 comprises resilient tabs or prongs 29 formed by the second end 28 having slots along its length in a direction parallel to the lengthwise axis of the handle 12, those slots being disposed at spaced intervals around the circumference of the second end 28. The outer diameter of the second end 28 of the first component 23 may taper, arranged to increase in diameter towards the first end 24 of the first component 23 to form a generally frustoconical an array of spaced resilient tabs or prongs 29. The array of spaced resilient tabs or prongs 29 forming at least part of the second end 28 of the first component 23 is arranged to receive a threaded annular member 32, comprising an inner threaded portion 34, suitable for connection to the outer threaded tubular section 30 of the first component 23.
The threaded annular member 32 further comprises a deflection surface 36. The threaded tubular member 32 and the first component 23 are secured by tightening of the inner threaded portion 34 of the threaded annular member 32 onto the outer threaded tubular section 30 of the first component 23. Continued tightening of the threaded annular member 32 onto the first component 23 causes the array of spaced resilient tabs or prongs 29 to be brought into contact with the deflection surface 36 causing force to be applied to the array of spaced resilient tabs or prongs 29, thereby causing the tabs or prongs 29 to be deflected into closer proximity such that the slots which are disposed around the circumference of the second end 28 are narrowed, effectively decreasing the circumference of the second end 28. The deflection of the tabs or prongs 29 causes at least some of the tabs or prongs 29 to contact the first section 14 of the handle 12.
The combination of the fixed first component 23 of the compression clamp means 22 and the threaded annular member 32 thereby provides a releasable securing means suitable for securing a first section 14 and a second section 16 of the handle 12 in position relative to each other.
In use the rake 10 may be in an initial extended condition, with the handle sections 14, 16 being secured in the extended condition by the operation of the compression clamp means 22. In this condition the handle 12 is generally of equivalent length to a traditional rake and as such the rake 10 can be used as a traditional rake, for instance by a person in a standing position wishing to operate the rake 10 close by or at some distance from themselves.
In order to facilitate ease of storage, provide safety benefits of a smaller rake, or for instance for use by a shorter person or one who requires use of the rake 10 in a sitting position, the rake 10 can be collapsed or contracted into a partially or fully contracted condition. In a contracted condition the storage of the rake 10 will be less burdensome, as the length of the handle 12 will be less than the length of the handle 12 when fully extended, thereby facilitating storage in smaller storage areas.
As previously noted a traditional rake presents the possibility of a person accidentally stepping on the head of the rake, when the rake head is located at or near ground level.
In order to facilitate the contraction of the rake 10 the threaded annular member 32 is rotated in a first rotation direction on the compression clamp means 22 such that it facilitates loosening of the tabs or prongs 29 from the first section 14 of the handle 12, thus allowing the first section 14 to be moved relative to the second section 16. Once the first section 14 has been moved to a partially contracted or fully contracted condition then the threaded annular member 32 can be rotated in the opposite direction to the first rotation direction to facilitate tightening of the tabs or prongs 29, via compression, onto the first section 14 to provide secure arrangement of the first section 14 and second section 16.
An alternative arrangement is shown in
A further alternative arrangement is shown in
Although embodiments of the present invention have been described in the preceding paragraphs with reference to various examples, it should be appreciated that modifications to the examples given can be made without departing from the scope of the invention as claimed.
In alternative arrangements comprising three or more handle sections, each of the sections may be connected using any of the aforementioned connection means. Within a handle 12, all sections may be connected and secured using the same means, or different means can be used for different sections. So as an example, in a handle comprising three sections, a first and second section may be connected and securable together as described in relation to the embodiment of
The present invention has been described such that by clamping the first section 14 and the second section 16 relative to each other, the arrangement of the first section 14 and the second section 16 may be secured in an extended or a contracted condition, however it will be apparent to the person skilled in the art that a contracted condition will encompass intermediate conditions between the fully extended and fully contracted conditions.
Although the compression clamp means 22 of the present invention has been described as being formed by the second end 28 of the first component 23 comprising resilient tabs or prongs 29 operable to be deflected upon application of a force to effectively clamp the first section 14 and the second section 16 of the handle 12 in secure arrangement, alternative clamp means can be envisaged. For example, in an alternative arrangement, the second end 28 of the first component 23 may comprise an outer threaded tapered arrangement, having slots along the length of the second end 28 in a direction parallel to the lengthwise axis of the handle 12 disposed at intervals around the circumference of the outer threaded tapered arrangement to form a generally frustoconical array of spaced threaded sections, for receiving an inner threaded tapered annular member, whereby tightening of the inner threaded tapered annular member onto the outer threaded tapered arrangement causes a force to be applied to the outer threaded tapered arrangement, causing the array of threaded sections thereof to be forced into closer proximity by the closure of the slots which are disposed around the circumference of the tapered threaded arrangement. The outer threaded tapered arrangement is therefore reduced in circumference, thereby facilitating the clamping of the sections 14, 16 of the handle 12.
Although the present invention has been described whereby the securing means is provided by a threaded compression clamp means 22, it will be appreciated that other securing means, suitable for releasably locking the plurality of sections together may be used. One alternative releasable locking arrangement provides detent means, such as sprung loaded pins or ball bearings which resiliently project from the side of one section to be located in corresponding apertures or concavities in the side of another section. When aligned, the location pin or ball bearing is accepted into or through an aperture or concavity in the other section, preventing extension or contraction of the sections relative to each other. Another alternative is for each section to have one or more apertures in the side allowing the insertion of a pin through the apertures of two sections arranged such that apertures in their sides are aligned to accept a pin therethrough, preventing extension or contraction of the sections relative to each other.
Although the present invention has been described whereby at least a first section 14 and a second section 16 are releasably locked in one of the extended or contracted conditions, it will be appreciated that other securing means may be used whereby the at least a first section 14 and a second section 16 are releasably retained in one of the extended or contracted conditions by retaining means. For example, retaining means may comprise a raised member on one section and a notch on an adjacent section, such that the raised member can be brought into coincidence with the notch such that the sections are retained together but not mechanically locked in position.
A further alternative securing means providing releasable retention of at least a first section 14 and a second section 16 requires sections comprising shaped internal and/or external surfaces, which are frictionally retained together when twisted together, preventing extension or contraction of the sections relative to each other. Alternatively the sections may be shaped to be frictionally retained together when contracted or extended to their fullest extents.
In alternative arrangements comprising three or more sections, each of the sections may be releasably secured using any of the aforementioned securing means, such that each section can be in a contracted, or an extended condition.
Although the present invention has been described in relation to a rake 10, the invention could be applied to other garden tools, such as hoes, that comprise a tool head 18 that extends, at least in part, at an angle to the lengthwise axis of the handle 12.
Features described in the preceding description may be used in combinations other than the combinations explicitly described.
Although functions have been described with reference to certain features, those functions may be performable by other features whether described or not.
Although features have been described with reference to certain embodiments, those features may also be present in other embodiments whether described or not.
Whilst endeavouring in the foregoing specification to draw attention to those features of the invention believed to be of particular importance it should be understood that the Applicant claims protection in respect of any patentable feature or combination of features hereinbefore referred to and/or shown in the drawings whether or not particular emphasis has been placed thereon.
Number | Date | Country | Kind |
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1121276.8 | Dec 2011 | GB | national |