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:
Jun. 28, 1994
Filed:
Mar. 22, 1993
Applicant:
Inventor:
John T Allen, Duncan, OK (US);
Assignee:
Halliburton Company, Duncan, OK (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
91402 ; 137529 ;
Abstract
A valve system for use with a tube jetting apparatus used for cleaning the interior surfaces of tubes such as those in heat exchangers. The apparatus includes a piston housing having a piston assembly slidably disposed therein. The pressure relief assembly also includes a differential pressure relief valve which is connected to the piston housing to relieve pressure therein as the piston moves within the housing.