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. 05, 1994
Filed:
Aug. 24, 1993
Applicant:
Inventor:
Robert R Kimberlin, Troutville, VA (US);
Assignee:
Ingersoll-Rand Company, Woodcliff Lake, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; F16D / ; F16D / ;
U.S. Cl.
CPC ...
192415 ; 192 / ; 1921 / ; 19211332 ; 19211336 ;
Abstract
A wrap spring clutch, for use in a percussion device activated by a fluid having a lubricant therein, includes a plurality of grooves in at least one of the friction engagement surfaces of the wrap spring clutch, to transmit a portion of the lubricant away from the friction zone of the clutch, to enhance the friction performance of the clutch. The grooves can be parallel and separate, or a single, continuous spiral groove.