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:
Jun. 29, 1976
Filed:
Feb. 13, 1974
Applicant:
Inventors:
Barry S Welton, Midland, TX (US);
G Wayne Westerman, Midland, TX (US);
Assignee:
Energy Systems, Inc., Midland, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
73151 ;
Abstract
Strain measuring devices for measuring the strain in the polish rod of a rod-pumped well unit. The devices include a body member to which strain gages are bonded, and further include clamp means for detachably affixing the devices directly to a polish rod. Embodiments are disclosed in which the body member is in the form of a strap, in the form of a split cylinder, or as an elongated bar with a section of reduced cross-section.