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:
Mar. 05, 1991
Filed:
Apr. 12, 1990
William M Bohon, Frisco, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
The present invention provides a method and apparatus for eliminating at least a portion of the energy losses in a well pumping system which are due to 'regeneration' (i.e. those periods during the pumping cycle in which the pumping system experiences negative net torque). This is accomplished by positioning a clutch means in the driving connection between the prime mover and the pumping unit of the well pumping system so that the clutch means forms a driving connection between said prime mover and said pumping unit during periods when said pumping unit experiences positive net torque and effectively disengages the driving connection between said prime mover and said pumping unit to allow freewheeling therebetween during periods when said pumping unit experiences negative net torque.