Chairs and seats – Back movement resiliently opposed in operating position – Back and bottom adjust in a fixed relationship
Patent
1990-06-06
1993-05-04
Dorner, Kenneth J.
Chairs and seats
Back movement resiliently opposed in operating position
Back and bottom adjust in a fixed relationship
297304, A47C 100
Patent
active
052074790
ABSTRACT:
The present invention is an office chair capable of dynamically tilting to provide a desired seat inclination from an upright position to a maximum tilted position. The preloading mechanism of the spring includes an adjusting screw and a tension arm which provides leverage. The leverage of the preloading mechanism facilitates turning the adjusting screw to vary the preloaded tension of the springs. Also, a spindle cover is provided to stop movement of the seat at the maximum tilted position, and to stop movement of a toggle mechanism at the upright position.
REFERENCES:
patent: 4575150 (1986-03-01), Smith
patent: 4711491 (1987-12-01), Ginat
patent: 4718726 (1988-01-01), Estkowski et al.
patent: 4796950 (1989-01-01), Mrotz, III et al.
patent: 4858993 (1989-08-01), Steinmann
patent: 4889385 (1989-12-01), Chadwick et al.
patent: 4909472 (1990-03-01), Piretti
patent: 4966411 (1990-10-01), Katagiri et al.
Motz Dennis R.
Trinkel Steven F.
Wickman Dennis J.
Dorner Kenneth J.
Hope Cassandra L.
Kimball International Inc.
LandOfFree
Chair control mechanism 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 control mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chair control mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1970578