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:
Sep. 08, 1987
Filed:
Oct. 02, 1986
Applicant:
Inventor:
James B Horton, Kilgore, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137494 ; 13753313 ; 13753315 ; 417507 ; 417554 ;
Abstract
A traveling valve or a standing valve for an oil well lift pump 10 includes a piston 36 which lifts a ball 50 above the valve seat 48 to open the valve and sets the ball 50 back onto the seat 48 to close the valve. The ball 50 is contained within a ball protection shield 52 which prevents uncontrolled movement by the ball 50 inside the middle tube 18. The piston 36 has openings 42, and the ball protection shield 52 has apertures 60 which allow fluid to flow through the the valve without engaging the ball 50.