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. 04, 1991
Filed:
May. 03, 1990
David C Heidenreich, Akron, OH (US);
Keith A Nichols, North Canton, OH (US);
Power Transmission Technology, Sharon Center, OH (US);
Abstract
A torque limiter has an input flange connected to an output hub through a force generating subassembly which includes a pressure plate and a cover plate having a plurality of springs interposed therebetween. The cover plate is fixedly secured to the input hub in fixed spaced apart relationship. A friction material is secured to opposite faces of a circumferential flange which is integral with the output hub. The friction surfaces engage the pressure plate and input hub, establishing the force transmitting interface. The force generating subassembly has a characteristic spring force associated therewith which is slightly increased when the assembly is completed. The total degradation of characteristic torque diminishes by only ten percent over the useful life of the clutch. The springs are color coded and visually verifiable.