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. 17, 1984
Filed:
Jul. 31, 1981
Applicant:
Inventor:
Tom A Garney, Houston, TX (US);
Assignee:
Dresser Industries, Inc., Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166241 ; 175325 ;
Abstract
An earth borehole instrument having a plurality of contact arms which are forced against the borehole side-walls so as to centralize the instrument in the hole. The contact arms may be either left free to rotate or may be positively locked in a number of non-rotational positions. This locking is done by fixedly engaging an indexing member, which is restricted to movement only in translation as to the instrument shaft, with the contact arms, thereby similarly restricting their movement.