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:
Aug. 16, 1977
Filed:
May. 10, 1976
Roger O Bjerk, Edelstein, IL (US);
William D Brandon, Peoria, IL (US);
Frederick S Engleking, Peoria, IL (US);
John P Jero, Washington, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A friction coupling which utilizes a friction plate composed of high modulus asperities incorporated into a reboundably compressible elastomeric matrix for selective rotational engagement with a relatively noncompressible reaction plate between which is directed a flow of fluid with the asperities hydrodynamically wedging such fluid into a relatively thin load supporting film between the asperities and the reaction plate which film absorbs substantially all of the energy of engagement in the shearing effect of the fluid during relative rotation of the plates.