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. 25, 2008
Filed:
Aug. 01, 2005
Philip W. Eggleston, Sherman, TX (US);
Philip W. Eggleston, Sherman, TX (US);
Other;
Abstract
Well fluid extraction apparatus includes a resiliently downwardly biased discharge head and a canister lowerable from the discharge head into the well to receive fluid therefrom, and then liftable into telescoped engagement with the discharge head. A specially configured seal structure between the discharge head and canister resiliently exerts a downward releasing force on the raised canister to facilitate its subsequent separation from the discharge head. An embodiment of the discharge head is pressure balanced to prevent gas pressure in the well from driving it upwardly. Leveling structure is provided for operatively connecting the apparatus to the vertically sloped upper end of a well casing and vertically leveling the connected apparatus.