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:
Dec. 23, 1980
Filed:
Aug. 07, 1978
Applicant:
Inventors:
Guerry L Hahn, Houston, TX (US);
Gerald S Baker, Houston, TX (US);
Assignee:
Cameron Iron Works, Inc., Houston, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251282 ; 251324 ; 251 57 ;
Abstract
Flow control apparatus is disclosed in which a closure element is reciprocated between flow controlling positions by means of a stem which is substantially counterbalanced with respect to forces on the stem due to the pressure of the fluid being controlled as well as ambient pressure conditions.