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:
Jan. 07, 1992
Filed:
Nov. 23, 1987
Applicant:
Inventor:
Thomas C Bair, Wrightsville, PA (US);
Assignee:
Armstrong World Industries, Inc., Lancaster, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
464160 ;
Abstract
A coupling is in two parts. One part is connected to the element to be driven and that part is a flat-face, circular member with three spaced grooves on its face and three spaced grooves on its circular edge. The second part is connected to the drive element and is a three jaw chuck with wedges on the jaws to engage the grooves on the circular edge of the first part. The three jaws have spring-biased projections that engage the grooves on the face of the first part to initially have the second part drive the first part.