Chairs and seats – Bottom or back with means to alter contour
Patent
1977-05-27
1979-07-03
Mitchell, James C.
Chairs and seats
Bottom or back with means to alter contour
297355, 297369, A47C 300
Patent
active
041598474
ABSTRACT:
A spring loaded frame pivotably mounted in the backrest frame is easily unlocked by light pressure applied to a lever disposed at the side of the seat proper whereby the pressure of the seated person's back pressing against the backrest portion urges the pivotable frame to a new position, in which the pressure applied to the dorsal and lumbar regions of his or her back are substantially equal, and in which it is lockable.
REFERENCES:
patent: 1205802 (1916-11-01), Silbert
patent: 2091899 (1937-08-01), Whedon et al.
patent: 2118689 (1938-05-01), Whedon et al.
patent: 3241879 (1966-03-01), Castello et al.
patent: 3258259 (1966-01-01), Bohlin
patent: 3938858 (1976-02-01), Drabert et al.
patent: 4019777 (1977-04-01), Hayashi
Adams Bruce L.
Burns Robert E.
Lobato Emmanuel J.
Mitchell James C.
Nissan Motor Company Limited
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