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:
Feb. 14, 1984
Filed:
Oct. 05, 1981
Applicant:
Inventors:
Sune W Eriksson, Sp.ang.nga, SE;
Gunnar K Egnelov, Johanneshov, SE;
Assignee:
Craelius AB, Bromma, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
294 8619 ; 166125 ; 294 8622 ;
Abstract
A device for disengaging a grappling device from a core barrel, which are lowered in an engaged or connected state into a hollow drill rod, is actuated by a recess made in the drill rod bore, when the barrel approaches or assumes a working position in the drill rod, and is thereby displaced by a spring for disengaging the mechanism connecting the grappling device and barrel.
Quick Actions:
Eriksson, Sune. (1984). Releasing device in core barrel grapplers (U.S. Patent No. 4431225). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4431225
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile