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. 08, 1991
Filed:
Jan. 04, 1989
Applicant:
Inventors:
Mark D Zitka, Lafayette, LA (US);
Gary Wells, Lafayette, LA (US);
Assignee:
Teleco Oilfield Services Inc., Meriden, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
173163 ; 464155 ;
Abstract
A flexible coupling for use in a down-hole motor assembly such as a positive displacement moineau motor is presented. The flexible coupling includes two sets of flexible joints. Each joint consists of two cylindrically shaped slipper couplings angularly offset by 90 degrees. Each slipper coupling is comprised of mating male and female members which are joined together by ball bearings positioned in arcuate grooves located along the cylindrical mating surface.