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. 29, 1978
Filed:
Nov. 22, 1976
Applicant:
Inventor:
John T Work, Anaheim, CA (US);
Assignee:
BJ-Hughes Inc., Long Beach, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ; F16F / ;
U.S. Cl.
CPC ...
64 1 / ; 64 2 / ; 64 13 ;
Abstract
A shock absorbing rotary drive coupling unit for drivingly connecting a tubular drive shaft to an axially aligned tubular driven shaft of a rotary blast hole drill. The unit has an annular body of resilient elastomer sandwiched between and bonded to end plates, with lugs and fasteners for connecting the end plates, respectively, to the drive shaft and the driven shaft.