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:
May. 26, 1987
Filed:
Sep. 27, 1984
Applicant:
Inventor:
Alfred H Jageler, Tulsa, OK (US);
Assignee:
Standard Oil Company, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175244 ; 175249 ;
Abstract
A hollow truncated cone made from material with elastic properties which expands around a core being cut from the sidewall of a borehole drilled in the earth with a core cutting means rigidly connected to a core barrel. The hollow truncated core is held in position inside the core barrel such that it does not rotate with the core cutting means during the cutting of a core.