Manual override for power recliner seat screw jack

Details Manual override for power recliner seat screw jack Manual override for power recliner seat screw jack

1987-08-27

1988-07-26

Zugel, Francis K.

Chairs and seats

Movable back

Tiltable

297355, B60N 102

Patent

active

047595876

ABSTRACT:
A power driven screw jack with manual override for adjusting the inclination of a pivotable backrest in a recliner seat has a housing attachable to the stationary portion of the seat and a screw attachable to the backrest. A nut threaded on the screw is normally fixed to the housing such that the screw may be motor driven to obtain axial displacement of the screw through the housing. A nut release is manually actuatable for freeing the nut from the housing, whereby the inclination of the backrest is adjustable by either turning the motor driven screw with the nut locked to the housing, or by linearly moving screw through the housing together with the nut released from the housing as by pushing on the backrest in case of power failure to the screw motor.

REFERENCES:
patent: 3226158 (1965-12-01), Strien et al.
patent: 3246868 (1966-04-01), Martens et al.
patent: 3350135 (1967-10-01), Martens
patent: 3369841 (1968-02-01), Heyl, Jr.
patent: 3398986 (1968-08-01), Homier
patent: 4630866 (1986-12-01), McFarlane

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