Fluid reaction surfaces (i.e. – impellers) – Ambulant – body supported or with carrying handle
Patent
1994-02-24
1995-06-20
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Ambulant, body supported or with carrying handle
416146R, 417234, 403345, 403360, 403361, 403375, 21713, 2422, F04D 2900, A42C 504
Patent
active
054256208
DESCRIPTION:
BRIEF SUMMARY
This invention relates to fan units for use in conjunction-with hats or any other head gear.
It is known to provide a hand-held fan to create a flow of air across the face of the user and such a fan usually incorporates an electrical motor unit powered by one or more dry cell batteries to cause rotation of an impeller blade. Such a fan is held in the user's hand and therefore that hand is occupied during such use, leaving only one hand free for normal use.
BACKGROUND OF THE INVENTION
1. Field of the Invention
Furthermore, some degree of concentration is needed to maintain the direction of air-flow towards the face, or other parts to be cooled, and when both hands are needed to be in use, the fan must be switched off and set down which may not always be convenient.
2. Description of the Prior Art
British Patent 1528476 discloses a fan for mounting in part of a hat or other head gear wherein two spaced apart disc-like members, each provided with openings through which air may be directed, have mounted for rotation therebetween the impeller of a fan unit. The construction of such a device is complicated as it includes ears or tabs for detachably securing the fan to the selected head gear.
U.S. Pat. No. 4,546,496 discloses a battery-driven fan for attachment to the brim or peak of a hat or cap, and having an adjustable visor for directing the air-flow onto the forehead or face of the user. That arrangement necessitates the visor being mounted before the user's eyes and prevents a clear view forwards. It is generally distracting and objectionable particularly if the user is participating in a sport, e.g. a ball game, at the time. Furthermore, the fan unit is retained on the brim of a hat by means of a resilient retaining ring which does not afford reliable permanent or semi-permanent mounting of the fan unit within the brim of the hat.
It is an object of the invention to provide a fan unit for use in conjunction with a hat or other head gear which does not have the limitations of the above-mentioned devices.
According to the invention there is provided a fan unit adapted for use with an article of head gear and an article of head gear as claimed in the accompanying claims.
SUMMARY OF THE INVENTION
In accordance with an embodiment of the invention there is provided a fan unit adapted for use in combination with an article of head gear comprising a multi-bladed impeller, an electric motor for driving the impeller, the electric motor being mounted within a motor housing which is retained in an inner member part of a first element located on one side of part of the head gear, the first element having an outer rim separate from but connected by radial arms to the inner member part of the first element, a second element located on the other side of the part of the head gear, the second element having a rim separate from but connected by radial arms to an inner disc member part of the second element, the inner disc member having an axial bore through which a drive shaft for the impeller passes, the inner disc member fitting into a recess within the inner member part of the first element and the radial arms of the second element fitting within a channel formed in the radial arms of the first element, the outer rim of the second element being formed with an upstanding annular member adapted to frictionally engage within an annular recess formed in the outer rim of the first member, the arrangement being such that the impeller is rotatable within the inner confines of the outer rim of the second element.
The motor housing may be retained within the recess in the inner member part of the first element by the inner disc member part of the second element.
The motor housing may be cylindrical and have an annular flange which is retained within the recess of the inner member part of the first element.
The annular flange may be retained within the recess of the inner member part of the first element by the inner disc member part of the second element.
Preferably a portion of the head gear is retained between the rims of
REFERENCES:
patent: 3353191 (1967-11-01), Dahly
patent: 3546415 (1970-12-01), Waters
patent: 3881198 (1975-05-01), Waters
patent: 4546496 (1985-10-01), Lewis
patent: 4893356 (1990-01-01), Waters
Look Edward K.
Verdier Christopher
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