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. 18, 1994
Filed:
Apr. 15, 1991
Applicant:
Inventors:
Leon K Jantzen, Calgary, CA;
Ross Pilich, Calgary, CA;
Hans J Brygger, Calgary, CA;
Charles D Costall, Eagle River, AK (US);
Assignee:
Canadian Fracmaster Ltd., , CA;
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 77 ; 166 85 ; 226172 ; 226173 ;
Abstract
There is provided an improved guide arch for guiding the movement of continuous production tubing through a predetermined curvature, the guide arch comprising a housing and an endless curved conveyor mounted within the housing to support the tubing through its curvature, wherein the conveyor continuously supports the tubing along the majority of its length passing through the arch to thereby reduce contact stress between the tubing and the conveyor.