Patent Application
20110289954
The present invention concerns a shoulder mounted hood cooling assembly. The assembly includes a blower support and a blower unit. The blower support includes shoulder mounts which rest on the shoulder of a user.
Workers are required to wear an arc protection hood to protect against the potentially devastating affects of arc flash.
U.S. Patent Publication 2008/0295220, Fan-based Cooler for Head-Protection Gear, Webb, discloses a cooler accessory with a hard hat or other head protecting gear having a protective shell with a rim. The accessory includes a housing that is attachable to the protective shell. Tubing extends from the housing. Air flow supply means in the housing supplies a flow of air that passes through the tubing and exits therefrom. During use, the tubing extends below the rim of the protective shelf for directing the flow of air supplied by the airflow supply means under the rim for injection towards a space adjacent the user's body thereby cooling the user's body. Preferably the tubing is configured such that the air flow is injected into an air gap between the user's head and the protective shell and over the user's head, thereby actively cooling the user's head. The accessory's housing can be removably secured to the protective shell by many different ways including adhesive means, straps, clips, a slotted interface or other suitable fixation mechanisms.
U.S. Pat. No. 7,357,135, Protective Hood with Fan Assembly, Cunningham, discloses a protective hood with a vent opening and a transparent shield mounted to a front portion of the hood. In a basic configuration a fan assembly is removably mounted to the hood and coupled to the vent opening to direct air flow within the hood. In another configuration a fan assembly is selectively attachable to the vent opening or position. Optionally a rear flap selectively seals the vent position when the fan assembly is not attached and the rear flap partially covers a fan when the fan assembly is attached to the hood.
The present disclosure concerns a shoulder mounted hood cooling assembly which includes a support, a blower carried by the support, and vents in fluid communication with the blower. When a user wears the support at least a portion of the support is adjacent the user's shoulder's and the vents are positioned to direct air exhausted from the blower to a neck or to a head or both the neck and the head of the user.
In more detail the support can include a first curved shoulder mount forming a portion of the support. The first shoulder mount defines an inwardly facing side surface. Additionally, a second curved shoulder mount forms a portion of the support. The second shoulder mount defines a inwardly facing side surface. A first chest portion extends downward from the first curved shoulder support and at a front of the support. The first chest portion defines an inwardly facing side surface. A second chest portion extends downward from the second curved shoulder mount and at a front of the support. The second chest portion defines an inwardly facing side surface. A back portion extends downward from said first and second shoulder mounts at the back of the support. The back portion defines an inwardly facing side surface. A neck accommodating space is defined by the inwardly facing side surfaces. When the support is worn by a user, the shoulder mounts rest on top of the user's shoulders. The vents open through one of the side surfaces.
a and 10b show an alternative embodiment of a shoulder mounted hood cooling assembly embodying my invention;
a and 11b are of a third embodiment of my invention showing a shoulder mounted hood cooling assembly with vent tubes to direct air around a users head;
a and 14b are a sixth embodiment of my invention showing a support with straps carrying a bag at the back; the bag carries a blower assembly;
a and 15b are a seventh embodiment of my invention showing a support with a blower assembly at its back; the supports back and front are pinned to the user; the front carries a battery and switch for the blower.
The blower support includes two curved shoulder mounts 26, 28. The mounts rest on top of a user's shoulders when in use. Extending downward from each mount, at the front of the support, are chest portions 30, 32. The chest portions 30, 32 which can also be referred to as chest abutments are located at the user's upper torso in an area adjacent the user's chest when the support is worn. The chest portions 30, 32 when around a user are coupled together by way of fasteners 36 such as magnets. The chest portions together form a chest mount or plate.
The blower support includes a back portion, mount, or plate extending downward from the shoulder mounts at the back of the support. The back portion is made up of a first back portion 38a and a second back portion 38b. The back portion is located adjacent the user's upper back and shoulder blade area when the support is worn by the user. The shoulder mounts 26, 28, chest portions 30, 32, and back portion 38a, 38b each have inwardly facing side surfaces 40a, 40a′; 40b, 40b′; 40c which together define a neck accommodating space 42. A user's neck is in the space when the support is worn by the user.
The back plate 38a, 38b has a portion which defines an internal hollow 44 in which a blower is carried. The blower 22 itself is in a blower housing 46 which is in the hollow 44. The back plate or portion has an inlet 48 which leads into the hollow 44. The inlet allows air to be drawn into the blower housing 46. The back portion has an internal passage 50 leading from the hollow which directs air being exhausted from the blower to a system of internal ducts 52 formed by the blower support. The ducts lead to vents 54a, 54b, 54c in the side surfaces defining the neck opening. The vents exhaust air towards a user's head and neck. The hollow, passage, ducts and vents are formed between support base 202 and support shell 200.
The support when resting on the shoulder's of a user positions the vents so that a drape 56 of a protective hood 58 falls over and beyond the vents. Air exiting the vents is confined by the drape and forced into open space between the hood and the user's neck and head. The vents 54a in the chest portion's side surfaces direct air at the user's face and front neck. The vent in the back portion 54b directs air at the back neck and back of the head. The vents 54c in the shoulder mounts direct air to each lateral side of the neck and head.
It is also possible that the blower does not have a housing distinct from the portion of the back plate which forms the hollow. The blower would be mounted within the hollow 44 without its housing. The back plate inlet 48, hollow 44 and passage 50 would direct the air to and from the blower. The blower in this case is an impeller. The blower could be any air conveyor such as a rotatary vane, piston, screw or claw.
To facilitate the user's ability to put on the support, the support is hinged. The hinge 60 joins a first portion of the support to a second portion. The first portion of the support includes first shoulder mount, 26 first chest portion 30 extending from the first shoulder mount, and first back portion 38a of the extending from the first shoulder mount. The second portion of the support includes second shoulder mount 28 second chest portion 32 extending from the second shoulder mount and second back portion 38b extending from the second shoulder mount. The hinge joins the first and second support portions together at the first 38a and second 38b back portions.
Having the portions hinged together allows a user to separate the first shoulder mount 26 and first chest portion 30 from the second shoulder mount 28 and second chest portion 32 in the lateral direction. The separation increases the size of the neck accommodating space making it easier for the user to install the support on the user's body.
A flexible tube 62 joins a first portion of the passage 50 in the first back portion 38a to a second portion of the passage 50 in the second back portion 38b. The tube helps ensure no air leaks from the passage.
To improve fit on a user, the support has adjustable abutment assemblies 64. Each chest portion, on its internal side, carries an adjustable abutment assembly 64. The abutment 65 of each assembly is spring loaded so when the spring member is in an uncompressed state, the abutment is spaced a maximum distance from chest portions towards the back portion.
The spring loaded spacing means the abutment will move from back to front of the support depending on the size of a user's chest. A user with a big chest will push the abutment more towards the front than a user with a small chest.
A lock mechanism allows a user to lock the abutment at the front of the support.
The support is constructed so that it retains it shape when not in use. The support is made of material which includes hard plastic. The external surface 200 of the support and base 202 are made of hard plastic. Shell 200 is made up of a first seamless monolithic piece of plastic and a second seamless monolithic piece of plastic joined to the first piece with hinge 60. Base 202 is made up of a first seamless piece of monolithic plastic and a second piece of monolithic plastic. Each piece is joined to the other by hinge 60. The hard plastic defines the ducts, passage, and hollow. To maintain its shape the support needs to be at least framed by a hard material such as hard plastic. Padding can line the interior of at least some of the base 202 for comfort.
One of the chest portions carry a switch 206 which allows a user to turn the blower on and off. Another of the chest portions carries batteries 204 which power the blower. Accordingly, the batteries 204 and switch 206 are electronically coupled to a motor which powers the blower. A charge port can be disposed on the support. The charge port is electrically coupled to the batteries.
The support can include straps extending from the chest portions and from the back plate. The straps allow a user to further secure the support to their body during use.
a, 10b; 11a, 11b; 12; and 13 show more basic examples of a shoulder mounted hood cooling assembly. All of the supports shown in these figures have shoulder mounts 70 chest portions 72 and a back portion 74. These features are clearly shown in
The support 76 in
The support 82 in
The support 90 of
a, 14b show a support with two shoulder straps 98 carrying a bag 100 at the back. The back carries a blower assembly. Each of the two straps include first and second strap portions which are fastened together by fasteners such a Velcro 104.
a, 15b show a fabric crushable support 106 carrying a blower assembly 112 at its back portion. The back portion 108 is pinned to a user's clothing. The shoulder mounts 110 extend from the back portion and are pinned to the user's clothing.
The term user encompasses an adult male or female around the age of 40 with an average build.
Attention is directed to all papers and documents which are filed concurrently with or previous to this specification in connection with this application and which are open to public inspection with this specification, and the contents of all such papers and documents are incorporated herein by reference.
All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
Although an example of the invention has been disclosed, it will be appreciated by those skilled in the art that various changes and modifications might be made without departing from the spirit and scope of the invention.
