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. 31, 2002
Filed:
Mar. 30, 2001
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A lumbar support device for adjusting the position of the portion of the seating surface of a seat back corresponding to an occupant's lumbar region includes a frame member, a plane spring body provided with linear spring elements and supported on the frame member by hanger springs, and an adjusting mechanism for adjusting the position of the plane spring body. The adjusting mechanism adjusts the plane spring body position via torsion springs which has a relatively large spring constant. The load associated with the occupant's weight is shared by the hanger springs and the torsion springs. The linear spring elements corresponding to the occupant's lumbar region can be extended by a small outward shift or movement of the plane spring body. Therefore, this lumbar support device imparts a good supporting feeling to the occupant.