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. 06, 2001
Filed:
Sep. 01, 1998
Applicant:
Inventor:
Thomas Hubert Vermeeren, Spruce Grove, CA;
Assignee:
RG Industries Ltd., Calgary, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 3/700 ; E21B 3/702 ; E21B 1/710 ;
U.S. Cl.
CPC ...
E21B 3/700 ; E21B 3/702 ; E21B 1/710 ;
Abstract
A scraper apparatus for a reciprocating sucker rod for prevention of the wearing of grooves in well tubing. The scraper is formed by a body with two opposed spiral vanes extending 180 degrees around the body and defining flow channels positioned between the spiral vanes. The scraper is secured to the reciprocating sucker rod and is positioned within the well tubing. The well tubing has an inner circumference with the two opposed spiral vanes engaging 360 degrees of the inner circumference of the well tubing while enabling fluids to bypass the body through the flow channels.