Height adjustment mechanism for a chair backrest

Details Height adjustment mechanism for a chair backrest Height adjustment mechanism for a chair backrest

1995-08-04

1996-12-24

Chen, Jose V.

Chairs and seats

Movable back

29741136, B60N 202

Patent

active

055868096

ABSTRACT:
A mechanism is provided for adjusting the height of the backrest relative to a chair seat. The adjustment mechanism for releasably retaining the backrest in a plurality of selected positions relative to a seat permits the chair to be shipped in a "knocked down" condition and easily assembled by the consumer. The adjustment mechanism includes a channel member that is secured to the backrest, and a support member carried by the chair that is slidably received in the channel member and rigidly locked in selected positions. The support member has vertically aligned rack teeth and the backrest has a movable catch having pawls that are adapted to engage the rack teeth. Movement of the catch places the pawls into engagement with the rack teeth to prevent the downward movement of the backrest from a selected vertical position.

REFERENCES:
patent: 979149 (1910-12-01), Gay
patent: 3215470 (1965-11-01), Swenson et al.
patent: 4043592 (1977-08-01), Fries
patent: 4155593 (1979-05-01), Swenson et al.
patent: 4156544 (1979-05-01), Swenson et al.
patent: 4181357 (1980-01-01), Swenson et al.
patent: 4451084 (1984-05-01), Seeley
patent: 4621864 (1986-11-01), Hill
patent: 4639039 (1987-01-01), Donovan
patent: 4660885 (1987-04-01), Suhr
patent: 4662681 (1987-05-01), Favaretto
patent: 4749230 (1988-06-01), Tornero
patent: 4786108 (1988-11-01), Dauphin
patent: 5007678 (1991-04-01), DeKraker
patent: 5037158 (1991-08-01), Crawford
patent: 5127621 (1992-07-01), Uecker et al.
patent: 5176356 (1993-01-01), Lorbiecki et al.
patent: 5468051 (1995-11-01), Huang

Affiliated with

Also associated with

Rating

Height adjustment mechanism for a chair backrest does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Height adjustment mechanism for a chair backrest, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Height adjustment mechanism for a chair backrest will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1174876