Chairs and seats – Back movement resiliently opposed in operating position – Back adjusts independent of seat
Reexamination Certificate
2006-03-28
2006-03-28
Brown, Peter R. (Department: 3636)
Chairs and seats
Back movement resiliently opposed in operating position
Back adjusts independent of seat
C297S374000, C297S302400, C297S302700
Reexamination Certificate
active
07017992
ABSTRACT:
A chair control device for a tiltable chair wherein the chair control includes a a one-piece integral structure mainframe housing, including an integral extension for a seat locking cam means, for supporting adjustment mechanisms. The housing is affixed to the underside of a seat portion of a chair and, optionally, a tailpiece bracket to affix the mainframe to a back portion of the chair. Also included in the device is a tension control means to control the resistance of the tilt motion, the tension control includes an elongated bolt having a first end attached to the mainframe and a second end attached to an adjustment means. A compression spring is inserted on the shaft of the bolt between the adjustment means and the mainframe. The tension control means is adapted to control the tension of the compression spring. A seat locking cam to control the amount of tilt in a specific range by locking of the seat, includes a clutch means to control the tilt function to lock the tilt into position and an adjustment means affixed to the locking cam clutch and a release means for the back portion of the chair including a clutch means to control the position of the back and an adjustment means affixed to the release clutch.
REFERENCES:
patent: 4013258 (1977-03-01), Doerner
patent: 4014086 (1977-03-01), Doerner
patent: D246217 (1977-11-01), Doerner
patent: D246588 (1977-12-01), Ferrarell
patent: D247943 (1978-05-01), Doerner
patent: 4123103 (1978-10-01), Doerner
patent: D252786 (1979-09-01), Doerner
patent: 4253632 (1981-03-01), Doerner
patent: D278961 (1985-05-01), Doerner
patent: 4636004 (1987-01-01), Neumuller
patent: 5356200 (1994-10-01), Stumpf et al.
patent: 5423594 (1995-06-01), Hancock et al.
patent: 5423595 (1995-06-01), Hancock
patent: 5447357 (1995-09-01), Dauphin
patent: 5588706 (1996-12-01), Neumueller et al.
patent: 5658045 (1997-08-01), Van Koolwijk
patent: 5664834 (1997-09-01), Hsu
patent: 6010189 (2000-01-01), Hybarger et al.
patent: 6120096 (2000-09-01), Miotto
patent: 6131998 (2000-10-01), Su
patent: 6394550 (2002-05-01), Liu
patent: 6447063 (2002-09-01), Beggs
patent: 6467845 (2002-10-01), Chen
patent: 0 972 469 (2000-01-01), None
Brown Peter R.
Smith Moore LLP
Warvel Products, Inc.-N.C.
LandOfFree
Chair control device for a tiltable 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 control device for a tiltable chair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chair control device for a tiltable chair will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3590650