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:
Oct. 30, 1984
Filed:
Jun. 08, 1981
Bernard J Fries, Tustin, CA (US);
Frederick S Faiks, Greenville, MI (US);
Donald D Korell, Ada, MI (US);
Steelcase Inc., Grand Rapids, MI (US);
Abstract
A chair control in which the chair occupant's body weight is the primary source of energy in reclining the chair and returning the chair to its task position includes a back support link and a front link, each pivotally mounted to a base link. A seat support link is pivotally mounted to and between the front link and the back support link. Pivoting of the links is restrained so that the front link extends upwardly and forwardly from said stationary link. The occupant's weight exerts a downward force on the front link, which exerts a forward force on the seat support link, which in turn exerts a forward force on the back support link providing a task position chair back support. A rearward force exerted on the back support link, as when the occupant reclines is partially counterbalanced by the above described forward force on the back support link so that no additional biasing means are necessary. The preferred embodiment includes biasing means to return the unoccupied chair control to the task position.