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. 21, 2001
Filed:
Feb. 10, 2000
Applicant:
Inventors:
Robert G. Draney, Derby, KS (US);
Donald C. Sassor, Osceloa, WI (US);
Jeffrey S. Volden, Burlington, IA (US);
Assignee:
Case Corporation, Racine, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 1/504 ;
U.S. Cl.
CPC ...
E21B 1/504 ;
Abstract
A coupling for quickly and easily attaching and detaching stakes from the drive head of a horizontal directional drill. The coupling includes an upper coupler member and a lower coupler member. The lower coupler member slides into the upper coupler member, and a pin in the upper coupler member rotates into opposed, horizontal slots in the lower coupler member.