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. 01, 2014
Filed:
Apr. 07, 2010
Jean Buytaert, Mineral Wells, TX (US);
Eugene Edward Miller, Weatherford, TX (US);
Ira Eugene Hining, Weatherford, TX (US);
Jean Buytaert, Mineral Wells, TX (US);
Eugene Edward Miller, Weatherford, TX (US);
Ira Eugene Hining, Weatherford, TX (US);
Antelope Oil Tool & Mfg. Co., LLC, Mineral Wells, TX (US);
Abstract
A bow-spring centralizer () includes bow springs (), moving collars () secured to each end of each bow spring, and interlocked stop collars (). Extendable collars () may each be formed of a moving collar () movably interlocked with a stop collar (). The centralizer () may optionally be formed from a tube cut using a laser to create two extendable collars coupled by bow springs. Each extendable collar may include heads integrally formed on extensions protruding from a collar (stop collar or moving collar). The heads may be generally rectangular, arrow, or teardrop-shaped head or some other shape. Each head may be slidably captured within a chamber on the interlocked collar (moving collar or stop collar). The extensions of each interlocked tubular member define the outer walls of the chamber in which a head of the interlocked tubular member is slidably captured. The stop collars may include or cooperate with one or more fingers extending along a casing to be secured by a sleeve that forms an interference fit about the casing.