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. 27, 1994
Filed:
Oct. 12, 1993
Applicant:
Inventors:
Paul B Campbell, Roanoke, VA (US);
Robert R Kimberlin, Troutville, VA (US);
Sean M O'Malley, Roanoke, VA (US);
Roland P Holt, Roanoke, VA (US);
Assignee:
Ingersoll-Rand Company, Woodcliff Lake, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25D / ; B25D / ;
U.S. Cl.
CPC ...
173111 ; 173 97 ; 173133 ;
Abstract
A fluid-activated, percussive impact tool has a piston therein that reciprocates longitudinally but not rotationally. The piston activates a wrap spring clutch to rotate the drill steel. A removable splined nut in combination with the tool's housing restrains rotation of the piston, while permitting longitudinal reciprocation of the piston.