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. 07, 1976
Filed:
Aug. 26, 1974
Charles W Modersohn, Beloit, WI (US);
Warner Electric Brake & Clutch Company, South Beloit, IL (US);
Abstract
A clutch-brake assembly includes input and output hubs, respectively, fixed and journaled on a rotatable shaft. A coil spring secured for movement with the output hub normally is wound into driving engagement between the input and the output hubs. A sleeve telescoped over the spring is fixed to the output hub and a low inertia braking member loosely mounted on the free end of the sleeve is held against substantial movement in both radial and axial directions with respect to the sleeve. In one form of the invention, a tang on the spring projects into a slot in the braking member and thus connects the member with the spring so the member normally rotates with the shaft but, when a braking torque is applied to the member, the spring is unwound from between the two hubs to disengage from them and subsequently to transmit the braking torque to the output hub to retard rotation thereof. In another form of the invention, a tang is integrally formed with the braking member to engage the input end of the spring. Intermediate the ends of the first convolution of the input end of the spring, a bend extends axially outward to hold the braking member normally away from the input end of the spring. When the braking member is pushed toward the spring during braking, the input end of the spring rocks outwardly to engage with the tang so the spring is unwound from the hubs by relative rotation between the braking member and the output hub.