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:
Nov. 14, 1995
Filed:
Oct. 05, 1994
Hiroaki Akima, Akishima, JP;
Tachi-S Co., Ltd., Tokyo, JP;
Abstract
A lumbar support device for seat which is of such a structure wherein a lumbar plate is supported on the free end portion of an arm, and wherein the arm is operatively connected, at its base end portion, with a threaded drive mechanism via a guide element, while the intermediate portion of the arm is in a slidable contact with a fulcrum or support rod. The guide element comprises a generally arcuate guide hole formed in conformity with a locus along which the base end portion of the arm has to be displaced in order for the free end portion thereof to be moved on a straight line. Such slidable contact between the arm's intermediate portion and support rod, and provision of generally arcuate guide hole, materializes a linear movement of the lumbar plate on the same straight line in the fore-and-aft direction of the seat. Thus, the lumbar plate is prevented against dislocation in the width-wise direction of the seat, offering a stable support touch to the lumbar part of an occupant on the seat.