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:
Mar. 30, 2004
Filed:
Feb. 08, 2002
Toshiyuki Imaizumi, Toyoake, JP;
Chuo Hatsujo Kabushiki Kaisha, Nagoya, JP;
Abstract
The present invention is directed to a helical compression spring which is mounted on a vehicle body to be compressed between an upper seat and a lower seat. The spring is formed to provide a coil axis to be substantially curved at a predetermined radius of curvature in an unloaded state of the spring. A pitch of a lower end coil of the spring is set to tilt a lower end plane of the spring at a first angle to the lower seat in a direction for shortening the longitudinal length of the spring at the inside of the curvature in the unloaded state of the spring, and/or a pitch of an upper end coil of the spring is set to tilt an upper end plane of the spring at a second angle in a direction for shortening the longitudinal length of the spring at the outside of the curvature in the unloaded state. And, the pitch of the lower end coil is set to tilt the lower end plane at a third angle to the lower seat on a plane including an end coil center line connecting the centers of the upper end coil and the lower end coil perpendicular to a plane including the end coil center line and the coil axis, in the unloaded state, and/or the pitch of the upper end coil is set to tilt the upper end plane at a fourth angle to the upper seat on that plane, in the unloaded state.