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:
Jul. 14, 1998
Filed:
Dec. 26, 1996
Kayaba Kogyo Kabushiki Kaisha, Tokyo, JP;
Kabushiki Kaisha Yanagisawa Seiki Seisakusho, Nagano, JP;
Koito Industries Ltd., Kanagawa, JP;
Abstract
Irrespective of limitation of a back-rest operating speed of a in a normal angle range, a raising speed of the back-rest in the case where the back-rest is greatly raised forward beyond the angle adjusting range is made faster. A back-rest angle adjusting apparatus 1 for a seat of a cylinder type in which an enlarged diameter portion 37 is constituted in an inner wall portion of a cylinder 2 opposed to a piston 16 in the vicinity of said back-rest angle adjusting apparatus 1, a bypass passage 38 is formed between the inner wall of the cylinder 2 and the outer periphery of the piston 16 when the enlarged diameter portion 37 on the cylinder 2 side is opposed to the piston 16, and a rod side chamber R and a head side chamber H within the cylinder 2 defined by the piston 16 are caused to communicate with each other by said bypass passage 38.