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:
Oct. 26, 2010
Filed:
May. 30, 2007
Applicant:
David D. Cosby, Fort Worth, TX (US);
Inventor:
David D. Cosby, Fort Worth, TX (US);
Assignee:
Harbison-Fischer, L.P., Crowley, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/04 (2006.01); E21B 47/09 (2006.01);
U.S. Cl.
CPC ...
Abstract
A plunger has a transmitter that produces signals as the plunger moves in a well. The signals are pulses that are produced at a constant interval. The plunger signals are detected and used to determine the location, direction of travel and speed of the plunger in the well. In addition, the location or height of the liquid level is detected as is the arrival of the plunger at the well bottom.