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. 30, 2002
Filed:
Oct. 20, 2000
Applicant:
Inventor:
Willard E. Kemp, Houston, TX (US);
Assignee:
Kemp Development Corp., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 2/500 ;
U.S. Cl.
CPC ...
F16K 2/500 ;
Abstract
A ball valve having an upstream seat ( ) with the seat actuated by outside pressure ( ). Retraction members ( ) continuously urge seat ( ) to a retracted position out of sealing engagement with the ball. A sealing member ( ) fits loosely within an annular recess in the seat ( ).