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:
Jul. 03, 2018
Filed:
Jun. 08, 2015
Applicant:
Top-co Inc., Weatherford, TX (US);
Inventor:
Gregory James Alexander Andrigo, Almonte, CA;
Assignee:
TOP-CO INC., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/10 (2006.01);
U.S. Cl.
CPC ...
E21B 17/1078 (2013.01); E21B 17/1028 (2013.01); Y10T 29/49828 (2015.01);
Abstract
A centralizer having asymmetrical bow springs defining a more gradual lead-in angle and a steeper retreat angle to reduce the required insertion and running forces. The centralizer comprises two end bands and a plurality of bow springs connecting the two shaped to gradually contact the surrounding hole or well casing. The bow springs are arranged such that a least two of them are asymmetric and positioned such that the apex of each is the same distance from an end band.
Andrigo, Gregory James Alexander. (2018). Easy-start centralizer with asymetrical bow springs (U.S. Patent No. 10012035). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10012035
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile