Chairs and seats – Movable back – Tiltable
Patent
1989-06-12
1991-04-16
Aschenbrenner, Peter A.
Chairs and seats
Movable back
Tiltable
297417, 297340, 297 68, 297327, A47C 102
Patent
active
050076795
ABSTRACT:
A chair assembly is mounted on a base member by a pivot that permits the chair assembly to tilt rearwardly from first position to a second position. The chair assembly includes a seat, a legrest that is forwardly extendible from the seat, and a back that is tiltable relative to the seat between a generally upright sitting position and a reclining position. When the chair assembly is at its rearwardly tilted second position, the legrest is in its extended position, and the back is in its reclining position, the head and ankles of an occupant are substantially at the same height for use in medical treatment in which the Trendelenburg is indicated. A releasable locking mechanism holds the cair assembly at a selected inclination angle relative to the base member. The locking mechanism has blades that are permanetly connected to the base and slidably connected to the tiltable chair assembly by a rod that extends through slots in the blades. Rotation of teh rod applies lateral pressure on the blades to lock the blades frictionally to the chair assembly. The chair assembly has arms that are located on opposite sides of the seat. A dropleaf table member is hinged to one arm, and this arm can swing down laterally below the height of the seat to enable attendants to move an occupant onto or off of the chair. When the arm is in this position, the dropleaf table member is vertical to act as a supporting leg.
REFERENCES:
patent: 3096119 (1963-07-01), Fletcher
patent: 3515433 (1970-06-01), Tabor
patent: 4155588 (1979-05-01), Danziger et al.
patent: 4216994 (1980-08-01), Benoit
patent: 4244620 (1981-01-01), Harrison et al.
patent: 4287619 (1981-09-01), Brewer et al.
patent: 4628552 (1986-12-01), Magistretti
patent: 4715654 (1987-12-01), Laskauitz
patent: 4813743 (1989-03-01), Mizelle
patent: 4844536 (1989-07-01), Mizelle
patent: 4878710 (1989-11-01), Tacker
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