Chairs and seats – Movable bottom – Tiltable
Patent
1976-05-24
1977-10-04
Parsons, Jr., Marion
Chairs and seats
Movable bottom
Tiltable
297341, 248398, B60N 104
Patent
active
040521028
ABSTRACT:
A folding seat assembly comprising a seat, a fold-away base for said seat and disposed under the seat, a pivoting support unit hingedly attached to a floor for rotation about a first axis, the support unit being shaped for permitting rotation of its forward side in a forward and downward direction and an upper frame adjacent the upper end of said support unit and pivotally attached thereto for pivoting about a second axis disposed upwardly and rearwardly from said first axis, the upper frame having legs at its rearward portion, and means attaching the underside of said seat to the upper side of said upper frame, whereby the upper frame and the support unit can tilt upwardly and forwardly together about the first axis and then the upper frame can move forwardly while pivoting about the second axis as the support unit rotates also about said first axis, the support unit having a stop means on it engageable by part of the attachment assembly so that when the rearward end of the seat or attachment assembly is raised upwardly the presence of the stop means will cause the support unit to rotate about the first axis in a direction such that the second axis will be caused to move laterally of itself upwardly and forwardly and whereby after the second axis is disposed above the first axis, then a shoving forward on the seat or the attachment assembly will cause the support unit to rotate further, causing the second axis to move forwardly and downwardly.
REFERENCES:
patent: 1613893 (1927-01-01), Jackson
patent: 1846374 (1932-02-01), Toncray et al.
patent: 1957004 (1934-05-01), Smith
patent: 2160015 (1939-05-01), Haberstump
patent: 2181671 (1939-11-01), Simpson et al.
patent: 3304044 (1967-02-01), Campbell et al.
patent: 3692270 (1972-09-01), McAuliffe
patent: 3880464 (1975-04-01), Murphy et al.
patent: 3933330 (1976-01-01), Gwin
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