Adjustable chair

Details Adjustable chair Adjustable chair

1986-03-17

1987-07-07

Zugel, Francis K.

Chairs and seats

Movable bottom

Tiltable

297330, 297363, 74 8915, A47C 102

Patent

active

046782311

ABSTRACT:
An adjustable chair includes a seat portion having a convex undersurface and a base portion having a concave upper surface. Low profile roller assemblies are fixed in a spaced apart relation along the convex undersurface. Tracks are affixed along the concave upper surface of the base portion. The roller assemblies are adapted for rolling contact with the tracks. A power transmission assembly has a first end which is pivotably coupled to the seat portion and has a second end which pivotably connects to the base portion. The power transmission assembly moves the seat portion along an arcuate path defined by the base portion. A noise dampening preload spring is associated with the second end of the power transmission assembly.

REFERENCES:
patent: 661208 (1900-11-01), Davis
patent: 2129124 (1938-09-01), Geyer
patent: 2586044 (1952-02-01), Horsky
patent: 2686009 (1954-08-01), Crowe
patent: 3193236 (1965-07-01), Thorn
patent: 3232575 (1966-02-01), Ferro
patent: 3588170 (1971-06-01), Knabusch
patent: 3640140 (1972-02-01), Gulick et al.
patent: 3804460 (1974-04-01), Leffler
patent: 3858452 (1975-01-01), Gatland et al.
patent: 4046241 (1977-09-01), Furtah
patent: 4101168 (1978-07-01), Ferro
patent: 4173372 (1979-11-01), Norris
patent: 4210033 (1980-07-01), Erikson et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1658470