Supports – Resilient support – Adjustable preloading of resilient means
Patent
1988-06-03
1989-06-13
Foss, J. Franklin
Supports
Resilient support
Adjustable preloading of resilient means
248602, 248610, 248624, 297308, 297345, F16M 1300
Patent
active
048385140
ABSTRACT:
A vehicle seat frame assembly comprises a stationary support frame having two laterally spaced-apart side support plates attachable to a vehicle and on which is mounted a vertically movable seat frame which comprises a horizontal seat portion and a vertical backrest portion. An upper rod is horizontally supported in slots formed in the upper ends of the side support plates. Rotatable rollers attached to opposite ends of the rod are engaged in roller guide boxes which are rigidly secured to the lateral sides of the seat frame backrest portion to guide and support the seat frame. An elongated swing arm is pivotally connected at its rear end and at its front end to the lower end of the support frame and to the front end of the seat portion, respectively, to help support the seat frame. A spring shelf and a header plate are rigidly secured to the seat frame near the lower and upper ends, respectively, of the backrest portion. A vertically disposed spring tension adjustment rod is rotatably mounted in holes provided in the spring shelf and header plate and its threaded lower end threadedly engages and supports a spring hanger. A pair of helical tension springs resiliently supports the seat frame on the support frame. Each spring has its upper and lower ends hooked to the upper rod on the support frame and to the spring hanger, respectively. Manual rotation of the tension adjustment rod moves the spring hanger to load or relax the springs. A spring damper in the form of an extendable/retractable shock absorber has its lower and upper ends pivotally connected to the rear end of the swing arm and to an anchor bracket on the seat frame backrest portion, respectively.
REFERENCES:
patent: 3326603 (1967-06-01), Lehner
patent: 3442552 (1969-05-01), Lehner
patent: 3480324 (1969-11-01), Bauer et al.
patent: 3572828 (1971-03-01), Lehner
patent: 3705745 (1972-12-01), Ambrosius
patent: 3861637 (1975-01-01), DeLongchamp
patent: 4186963 (1980-02-01), Koutsky
patent: 4662597 (1987-05-01), Uecker et al.
Foss J. Franklin
Kirby Thomas F.
Milsco Manufacturing Company
Nilles James E.
Talbott David L.
LandOfFree
Vehicle seat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vehicle seat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vehicle seat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1270873