Chairs and seats – Movable bottom – Tiltable
Patent
1999-06-01
2000-08-29
Brown, Peter R.
Chairs and seats
Movable bottom
Tiltable
2973002, A47C 1032
Patent
active
061096946
ABSTRACT:
A control mechanism for a chair having a seat and back includes a first rigid member having a forward end and a rearward end with a first pivot mechanism provided proximate the forward end and a second pivot mechanism provided proximate the rearward end. A second rigid member has a forward end and a rearward end with the forward end being pivotably connected to the first pivot mechanism and with a third pivot mechanism provided proximate the rearward end. The second rigid member is secured to an underside of the seat. A third rigid member is provided having an upper end and a lower end with the lower end being pivotably connected to the third pivot mechanism. A fourth rigid member is provided having an upper end and a lower end, the upper end being rigidly connected to the third rigid member and the lower end being pivotably connected to the second pivot mechanism of the first rigid member. The upper end of the third rigid member is pivotably connected to the back of the chair. Thereby, shifting of a user's position on the seat provides a self-adjusting back tension feature of the chair.
REFERENCES:
patent: 868052 (1907-10-01), Wilmut
patent: 2083838 (1937-06-01), Goenen
patent: 2796918 (1957-06-01), Luckhardt
patent: 3602537 (1971-08-01), Kerstholt et al.
patent: 3869172 (1975-03-01), James et al.
patent: 4478454 (1984-10-01), Faiks
patent: 4502729 (1985-03-01), Locher
patent: 4685730 (1987-08-01), Linguanotto
patent: 4765679 (1988-08-01), Lanuzzi et al.
patent: 5318345 (1994-06-01), Olson
patent: 5486036 (1996-01-01), Koepke et al.
patent: 5826940 (1998-10-01), Hodgdon
Brown Peter R.
HON Technololgy, Inc.
LandOfFree
Chair with four-bar linkage for self-adjusting back tension 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 with four-bar linkage for self-adjusting back tension, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chair with four-bar linkage for self-adjusting back tension will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1241479