Chairs and seats – Back movement resiliently opposed in operating position – Back secured to resilient upright bar or rod
Patent
1988-06-03
1989-11-14
McCall, James T.
Chairs and seats
Back movement resiliently opposed in operating position
Back secured to resilient upright bar or rod
297297, 297298, A47C 300
Patent
active
048802727
ABSTRACT:
A seat (2) is mounted pivotably about a first axle (A1) on the stand (1) of the chair. The seat frame (8) is connected to a second axle (A2) which is fastened to the backrest (3) behind the backrest (3) at a horizontal distance from the latter and at a vertical distance from the first axle (A1).
The backrest (3) produced from an elastically resilient material, when deflected out of its vertical position, causes the second axle (A2) to move over an arc of a circle of radius A.sub.1 -A.sub.2 ; the rear seat portion adjacent to the backrest (3) is also lowered correspondingly thereby. The backrest (3) extending over the entire height of the chair forms with its lower portion an integral component of the chair stand (1).
In comparison with the known complicated and heavy backrest/seat adjustment mechanisms, a cost-effective and lightweight construction, but one which fully satisfies modern ergonomic requirements as regards sitting comfort, is proposed here.
REFERENCES:
patent: 169065 (1875-10-01), Tostevin
patent: 2439869 (1948-04-01), Sharp
patent: 2557671 (1951-06-01), McDonald
patent: 2961035 (1960-11-01), Lorenz
patent: 3095238 (1963-06-01), Tarascon
patent: 4668012 (1987-05-01), Hermann
McCall James T.
Protoned B.V.
Selitto, Jr. Ralph W.
LandOfFree
Seat furniture does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Seat furniture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seat furniture will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1849262