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:
Nov. 20, 1984
Filed:
Jul. 29, 1983
Applicant:
Inventor:
Henry Seal, Arlington, TX (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
73155 ; 73153 ;
Abstract
A system for testing the parameters of drilling mud has a flush pump for periodically flushing drilling mud from the components of the system. The flush pump includes a piston driven by a source of pressurized air selectively applied to one side to pressurize flush water and to the other side to retract the piston and to draw another volume of flush water from the source. A solenoid valve between the flush pump and viscosity measuring tubes in the system connects the volume of pressurized flush water in the pump to a tap of the measuring tubes by displacement of the piston.