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:
Jun. 23, 2015
Filed:
Aug. 24, 2011
Takahiro Osaki, Aichi-ken, JP;
Takahiro Osaki, Aichi-ken, JP;
KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO, Aichi-Ken, JP;
Abstract
A difference in limiting torques of rotation between a spring and a rotary member is increased without increasing a number of coils of the spring. In a webbing winding device, an outer diameter of a clutch wall of a clutch wheel increases from a flange side to a stopping flange side of the clutch wall. When a clutch spring is tightly wound on the clutch wall, the clutch spring is subjected to a movement force toward the stopping flange side. Thus, a winding force of the clutch spring onto the clutch wall is effectively increased. Therefore, a difference in limiting torques of rotation between the clutch spring and the clutch wheel between when the clutch spring is not tightly wound on the clutch wall and when it is wound on the clutch wall is increased, without increasing a number of coils of the spring.