Chair

Details Chair Chair

1981-03-17

1984-05-29

Zugel, Francis K.

Chairs and seats

Back movement resiliently opposed in operating position

297292, 297300, 297320, 297457, A47C 300

Patent

active

044510853

ABSTRACT:
A reclining article of furniture for sitting, especially an office chair, with the article including a seat portion and a back portion articulated thereto. The seat portion and back portion are respectively connected to an underframe. The seat portion is supported in a forward zone and the back portion is supported by a supporting lever articulated to the underframe and articulated to the back portion at hip level of a user. To obtain a support which is also effective in the zone of the lumbodorsal vertebrae and to provide a close contact of the supporting surfaces with the users body. The contact is uniform in the rest position approximately from a back of the knees up to the shoulder blades. The seat and back merge through an arcuate intermediate section which is flexible so that the arc becomes wider. A connecting line extending between two points of articulation of the supporting lever in a basic position of the chair is inclined at an angle of between 0.degree. and 25.degree. and, preferably, between 15.degree. and 25.degree., with respect to the vertical. By virtue of these features, the seat surface is initially lengthened toward a rear before a stronger rearward inclination of the back occurs when the seat is moved from an upright sitting attitude to a reclined attitude.

REFERENCES:
patent: 868052 (1907-10-01), Wilmot
patent: 2365200 (1944-12-01), Lorenz
patent: 3133765 (1964-05-01), Kramer
patent: 3140118 (1964-07-01), Dorn
patent: 3146028 (1964-08-01), Grosfillex
patent: 3387887 (1968-06-01), Jakobsen
patent: 3874727 (1975-04-01), Mehnert
patent: 4270797 (1981-06-01), Brauning

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1393973