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:
Sep. 30, 1980
Filed:
Sep. 14, 1978
Hideyasu Takefuta, Higashi Matsuyama, JP;
Kohki Iwata, Higashi Matsuyama, JP;
Toshio Yamaguchi, Higashi Matsuyama, JP;
Diesel Kiki Co., Ltd., Tokyo, JP;
Abstract
Rotary input and output members (19), (28) are axially aligned with each other and a rotary clutch disc (32) is axially aligned with and frictionally engageable with the input member (19). A coil-wound spring (33) is wound around the input and output members (19), (28) and connected at its ends to the clutch disc (32) and output member (28) respectively. An electromagnetic coil (26), which energized, attracts the clutch disc (32) into frictional engagement with the input member (19) and causes the coil-wound spring (33) to tightly wind around and embrace the input and output members (19), (28), thereby drivingly connecting the same together. A sleeve (41) formed with a circumferential gap (41a) is disposed between the coil-wound spring (33) and the input member (19) which provides the clutch (11) with a desirable amount of slippage prior to full engagement, evenly distributes the radially inward force applied to the input and output members (19), (28 ) by the coil-wound spring (33) and prevents the coil-wound spring (33) from entering an axial space (42) between the input and output members (19), (28).