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:
Aug. 20, 2019
Filed:
Apr. 27, 2018
Mitsubishi Steel Mfg. Co., Ltd., Chuo-ku, Tokyo, JP;
Jun Yoshioka, Canton, MI (US);
MSSC INC, Troy, MI (US);
Abstract
A composite coil spring includes a coil body that extends along a coiled axis. The coil body includes a core and fiber layers impregnated with a polymer material. The fiber layers are arranged around the core at different radial distances from the coiled axis. Each fiber layer extend around the coiled axis at an oblique fiber angle to the coiled axis. The fiber layers include at least one glass fiber layer and at least one carbon fiber layer. Each fiber layer includes a number of fibers that is a product of a common base number of fibers multiplied by a positive non-zero integer from a set of positive non-zero integers. The positive non-zero integer of at least one of the fiber layers is different from the positive non-zero integer of at least one other of the fiber layers.