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. 08, 2002
Filed:
Mar. 21, 2000
Toshio Hamano, Yokohama, JP;
Hirotake Kato, Yokohama, JP;
Iwao Shigeoka, Yokohama, JP;
Takahiro Nakamura, Yokohama, JP;
Toshiyuki Kamakura, Yokohama, JP;
Masaya Komazaki, Yokohama, JP;
NHK Spring Co., Ltd., Kanagawa-Ku, JP;
Abstract
Provided is a wheel suspension system ( ) and a spring ( ) therefor which can improve the ride comfort of the vehicle by reducing the sliding resistance between the cylinder and the piston of the tubular shock absorber ( ) surrounded by the compression coil spring without increasing the size of the suspension system and without complicating the assembly work. The compression coil spring is adapted to produce lateral forces between two ends thereof as the compression coil spring is extended and compressed by forming the coil spring so as to have cyclically varying pitch angle for each turn of the coil wire.