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:
Nov. 28, 2000
Filed:
Jul. 20, 1999
Tomonori Nagata, Aichi-ken, JP;
Seiji Hori, Aichi-ken, JP;
Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho, Aichi-ken, JP;
Abstract
A plurality of protrusions are formed on an inner peripheral portion of a bearing main body that supports a large diameter shaft portion of a take-up shaft. These protrusions are in line contact with an outer peripheral portion of the large diameter shaft portion, which allows the bearing main body to support the large diameter shaft portion indirectly via the protrusions. As the protrusions are in line contact with the large diameter shaft portion, the contact area is very small and the frictional resistance between the protrusions and the large diameter shaft portion causes the protrusions to undergo plastic deformation easily. Thus, the resistance that hinders the rotation of the large diameter shaft portion is decreased and a share that is served for the rotation of the take-up shaft by the pressure of gas is increased, thereby providing a webbing retractor that can serve efficiently for taking up a webbing belt.