Chairs and seats – Movable back – Tiltable
Patent
1977-05-02
1978-07-11
Mitchell, James C.
Chairs and seats
Movable back
Tiltable
B60N 102
Patent
active
040997774
ABSTRACT:
Seat positioning mechanism of the type including an elongated thin-walled housing telescopically receiving a rod with friction lock washers operable to restrain the rod against movement with respect to the housing in any selected position. The invention includes a construction for increasing the locking efficiency of the lock washers and reducing the cross-section of the housing. A slot is formed in the wall of the housing, and one end of the slot is located on the housing wall at the outer boundary of the housing to define a fulcrum. The other end of the slot forms a stop on an inwardly depressed portion of the housing wall. The lock washers have lever arms that project into the slot. The fulcrum is curved to minimize the likelihood of sideways cocking of the lock washers. Also disclosed is a novel release mechanism including a shaft rotatably supported in a mounting bracket secured to the housing. A pusher member in the form of an eccentric cylindrical projection on the end of the shaft projects part way into the housing. When the shaft is rotated to an active position, the projection forces the lock washers against a return spring to the unlock position. when the shaft returns to an inactive position, the lock washers return to the lock position.
REFERENCES:
patent: 2806723 (1957-09-01), Fairclough
patent: 3271071 (1966-09-01), Tabor
patent: 3356411 (1967-12-01), Homier et al.
patent: 3383135 (1968-05-01), Posh
patent: 3876248 (1975-04-01), Gillentine
patent: 3893730 (1975-07-01), Homier et al.
Lear Siegler, Inc.
Mitchell James C.
LandOfFree
Telescopic seat positioning mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Telescopic seat positioning mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telescopic seat positioning mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-258044