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:
Jul. 31, 1984
Filed:
Jul. 10, 1979
Applicant:
Inventors:
Duncan H Cooper, Indianapolis, IN (US);
Herbert W Egan, Jr, Indianapolis, IN (US);
Assignee:
Wallace Murray Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
74574 ;
Abstract
An improvement over U.S. Pat. No. 3,440,899 by McGavern. That patent includes a first plurality of shear liquid filled cavities defined by through apertures in the elastomer member. The improvement of this invention resides in adding a second plurality of shear liquid filled cavities, the cavities located in the inertia member at a surface thereof interfaced with the elastomer member. By this construction the total volume of shear liquid is increased, thereby increasing the damping action of the torsional vibration damper.