Vehicle parallel seat lift with stable linkage

Details Vehicle parallel seat lift with stable linkage Vehicle parallel seat lift with stable linkage

1997-12-17

1999-10-19

Braun, Leslie A.

Supports

Stand

Adjustable vertically

248419, 248420, F16M 1100

Patent

active

059674717

ABSTRACT:
A parallel acting vehicle seat lift uses a single jack screw unit at the front and a passive linkage at the rear. The linkage is located such its inherent play or looseness is continually taken up by the constant weight force of the occupant acting downwardly at the rear of the seat cushion. The jack screw unit, which is inherently tight, is attached at the bottom to the vehicle floor and at the top to the seat cushion frame by close fitting pivots, so there is no perceptible looseness. The passively acting linkage uses two bell cranks, each centrally pivoted to the floor, the first of which is attached at one arm the seat cushion frame by a close fitting pivot. The second bell crank is attached to the rear of the seat cushion frame by a lost motion connection, and the two facing arms of the bell cranks are connected together by a second lost motion connection. The continually acting weight force of the seat occupant imposes opposed moments on the bell cranks about their central pivots, thereby taking the play out of the lost motion connections.

REFERENCES:
patent: 2784764 (1957-03-01), Rigby et al.
patent: 2875809 (1959-03-01), Ragsdale et al.
patent: 2919744 (1960-01-01), Tanaka
patent: 3006594 (1961-10-01), Gruendler
patent: 3066907 (1962-12-01), Latimer et al.
patent: 3137472 (1964-06-01), Louton, Jr. et al.
patent: 3182947 (1965-05-01), Tanaka
patent: 3410515 (1968-11-01), Posh
patent: 4015812 (1977-04-01), Heesch
patent: 4344594 (1982-08-01), Hirth
patent: 4533106 (1985-08-01), Stockl
patent: 4756576 (1988-07-01), Bianchi et al.
patent: 4949585 (1990-08-01), Dauvegne et al.
patent: 4966045 (1990-10-01), Harney
patent: 5046697 (1991-09-01), Detloff et al.
patent: 5112018 (1992-05-01), Wahls
patent: 5222402 (1993-06-01), White et al.
patent: 5321617 (1994-06-01), Mori et al.
patent: 5349878 (1994-09-01), White et al.
patent: 5456439 (1995-10-01), Gauger
patent: 5472165 (1995-12-01), Gruber
patent: 5586740 (1996-12-01), Borlinghaus et al.

Affiliated with

Also associated with

Rating

Vehicle parallel seat lift with stable linkage does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vehicle parallel seat lift with stable linkage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vehicle parallel seat lift with stable linkage will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2046365