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:
Dec. 30, 1980
Filed:
Apr. 03, 1979
Teiji Okuyama, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A seat suspension apparatus comprises a pair of parallel link assemblies and a pair of balance springs. In order to reduce the elevation of the seating surface relative to a support base and to assure a stabilized suspension when the seating surface is depressed to a relatively low elevation, one of the parallel link assemblies is coupled with the other at a given angle therebetween. The resilience of the balance springs counteracts the load on the seat to maintain the pair of parallel link assemblies at a balanced position which depends on the magnitude of the load. The resilience can be adjusted through an eccentric cam which is operated by a lever located on one side of the seat. Thus the user can adjust the elevation of the seat by turning the lever while looking forward, avoiding the need for assuming a slouch position.