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:
Jul. 10, 1979
Filed:
May. 26, 1976
Applicant:
Inventor:
William K Journey, Greenwood, MS (US);
Assignee:
Preussag Aktiengesellschaft, Hanover and Berlin, DE;
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417238 ; 417552 ;
Abstract
A deep well pump includes a cylinder having a foot valve and a valved piston which is movable over a given range in the cylinder. The cylinder is preferably formed of plastic, extends above ground and below the range of movement of the piston, and is of constant diameter over its length. The piston rod also extends above ground and is of variable length to vary the range of movement of the piston. The foot valve structure and piston structure are interchangeable and connected together during operation by a slackened cable.