The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 1980
Filed:
Feb. 01, 1978
Gerd Grass, Detmold, DE;
Jorg Hettich, Lemgo, DE;
Gebr. Isringhausen, Lemgo, DE;
Abstract
A resiliently-mounted vehicle seat has a spring unit on the linkage between the seat frame and the underframe. The unit is interposed between the linkage and the seat frame and includes springs which extend between an extension of the linkage and the seat frame. The springs are connected to a bar which engages the extension at an adjustable position along its length to vary the restoring force of the springs on the linkage according to the weight of the occupant. Movement of the bar along the extension is controlled by virtue of a selective gripping action of the bar on the extension so that in the unloaded condition of the seat the bar does not grip the extension. As an additional feature a mechanism is provided for selecting the desired position of the bar on the extension when the seat is occupied, the bar moving when vibrations in the seat unload the unit.