Chairs and seats – Movable bottom – Tiltable
Patent
1983-10-12
1985-11-12
McCall, James T.
Chairs and seats
Movable bottom
Tiltable
297 41, 297445, 297458, 297DIG10, A47C 102
Patent
active
045524041
ABSTRACT:
A neutral body posture chair to support a user in a neutral body posture position defined as the natural position a body assumes in weightlessness where the muscle, tendon, and ligament systems acting over the joints are in total balance wherein the trunk of the body forms an angle of approximately 127 degrees with respect to the upper legs and the upper legs form an angle of approximately 127 degrees with the lower legs. The chair includes a seat formed into a bowl at the pelvic area, leg troughs support the upper legs and raised sides to maintain the user in the selected position. The seat further includes an elevated pommel which supports the pubis bone of the user to maintain the user in the desired neutral body posture angle without sliding out of the seat. The chair assembly includes a back rest, footrests, and a suitable base. The chair includes means for adjusting the vertical height of the seat, the tilt angle of the seat, the angle of the backrest, and vertical height of the backrest.
REFERENCES:
patent: 2458463 (1949-01-01), Bell
patent: 2970638 (1961-02-01), Halter
patent: 3029106 (1962-04-01), McGuire
patent: 3503649 (1970-03-01), Johnson
patent: 3669493 (1972-06-01), Vowels
patent: 3740096 (1973-06-01), Bridger
patent: 3754787 (1973-08-01), Garber
patent: 3863978 (1975-02-01), Gillings, Jr.
patent: 4083599 (1978-04-01), Gaffney
patent: 4249774 (1981-02-01), Andreasson
patent: 4367897 (1983-01-01), Cousins
Aquilino N. J.
McCall James T.
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