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:
Apr. 22, 1986
Filed:
Mar. 18, 1985
Applicant:
Inventors:
Karl A Senghaas, San Antonio, TX (US);
Peter Senghaas, San Antonio, TX (US);
Assignee:
Southwest Bailer Pump Company, San Antonio, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ; E21B / ;
U.S. Cl.
CPC ...
417 36 ; 417410 ; 417411 ; 166 53 ; 166 751 ; 166168 ; 294 6822 ;
Abstract
A direct current operated bailer pump which utilizes battery power to winch up, while recovering the energy generated by the motor acting as a generator during the downward movement of the bailer to recharge the battery. A sensing circuit senses when the bailer contacts the surface of the oil by monitoring the generated voltage from the motor. A voltage drop corresponds to the sudden decrease in velocity as the bailer encounters the surface of the oil in the well. A dynamic brake is connected to the motor, after a set time period, to decrease the down speed of the bailer to a predetermined safe speed.