Chairs and seats – Rest for knee – leg – or foot – Connected to chair or seat for relative movement
Patent
1998-04-06
1999-07-06
Brown, Peter R.
Chairs and seats
Rest for knee, leg, or foot
Connected to chair or seat for relative movement
297 83, 297321, 29742336, 29742328, A47C 1035
Patent
active
059189428
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a chair comprising a leg support (calf support), wherein the angle between seat and back support is step-less adjustable, wherein the front edge of the seat is link connected with a calf supporting board, wherein the front edge of the seat is link connected with a telescopic support upwardly inclining from the base of the chair and comprising a first supporting member firmly attached to said base, and a second supporting member which is slidable in relation to said first supporting member and is link connected with the front edge of the seat, there being firmly attached to the front edge of the seat a fastening extending downwardly and rearwardly along the outside of said support, a gas spring being link connected at its one end with said fastening and at its other end being pivotably connected with the free end of an arm which extends from the bottom side of said board at the rear end thereof close to said link connection between the seat and the board.
A chair of this type is known from Norwegian Patent Application No. 93.2452.
For further information of the prior art, reference is made to Norwegian Patent Specification No. 76.661 and German Published Specification 3.531.879.
In addition there are a plurality of such known chair solutions, especially in connection with so called "deck chairs". However, there exists a great desire in a simple manner to remove the calf supporting board when the user of the chair wishes to take an erected position in the chair.
For this purpose the present invention devises a simple and practical solution, and the arrangement is primarily characterized by: thereof, said gliding hook bar having a protrusion having a first inclined surface and at an angle therewith having a second inclined surface merging into a hook portion, and wherein said first inclined surface merges into a lower, free end portion of said bar, that an angle iron is firmly attached to said first supporting member, said gliding hook bar being adapted to slide in contact with the horizontal portion of said angle iron and in a desired, preferably horizontal use position of said board without being in contact with said angle iron, said fastening, said sliding hook bar being adapted to fit in between the U's branches which are at different levels, and that: hook bar is effected to be displaced upwardly in relation to said angle iron, so that when said second inclined surface comes in contact with said angle iron and commences to climb thereon, this displacement will together with the slidable contact of the sliding hook bar against the uppermost positioned branch of said U-loop effect a turning moment on said sliding hook rod, so that the end thereof which together with an end of said gas spring is link connected with said arm, will obtain a displacement downwardly and forward, whereby the end of the gas spring which is link connected with said arm will centre-over to a position in which expansion of said gas spring is possible and effect the board to take a desired, preferably horizontal position, at the same time as said hook portion will engage the lowermost positioned branch of said U-loop and prevent a downward displacement of said board, and said free end portion of said rod moving some distance away from said angle iron and portion of said sliding hook rod is effected to come in contact with and slide along said angle iron, since when said first inclined surface comes in contact with said angle iron and climbs thereupon, said hook will come out of engagement with said U-loop, whereby said sliding hook rod slides along said angle iron at the same time as said board is moved downwardly by the weight of the users' leg and said second supporting member moves downwardly along and in cooperation with said first supporting member until the free end of said arm is in a centre-over position preventing operation of said gas spring.
According to a further embodiment of this arrangement, said calf supporting board can be equipped with telescoping means, whereby the length of said bo
REFERENCES:
patent: 639076 (1899-12-01), May
patent: 4509795 (1985-04-01), Brennan et al.
patent: 5033793 (1991-07-01), Quintile
patent: 5597210 (1997-01-01), Pickard
PCT International Search Report, Sep. 9, 1966.
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