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. 19, 2021
Filed:
Jul. 10, 2020
Kabushiki Kaisha F.c.c., Hamamatsu, JP;
Junichi Nishikawa, Hamamatsu, JP;
Katsu Yoshimoto, Hamamatsu, JP;
Han Hiong Chen, Hamamatsu, JP;
Yoshihiko Ozawa, Hamamatsu, JP;
Kabushiki Kaisha F.C.C., Hamamatsu, JP;
Abstract
A power transmission device has a pressure member () pressing drive-side clutch plates and driven-side clutch plates against each other or releasing a press-contact force. A clutch spring () urges the pressure member () in a direction so that the clutch plates are pressed against each other. A separate receiving member () is attached to the pressure member (). A back-torque limiting cam reduces press-contact force between the clutch plates when the rotation speed of an output member exceeds the rotation speed of an input member. A rotation restricting portion () restricting rotation, relative to the clutch member (), of the pressure member () that has moved due to activation of the push rod (). A clearance t is maintained between the pair of cam surfaces that constitute the back-torque limiting cam.