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:
May. 19, 1992
Filed:
Mar. 06, 1991
Applicant:
Inventors:
Edward S Mumby, Houston, TX (US);
Kevin J Shinneman, Houston, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
367 85 ; 367 83 ;
Abstract
Variable control of the stroke and timing of the poppet in a pressure pulse generator system provides desired control for varying down hole conditions. A stepper motor interconnected to the poppet provides variable acceleration and variable position for the poppet under the control of a motor controller and motor driver which establish the number of steps and timing of steps for the motor. Various valve position profiles are provided in a memory for specific stroke and acceleration operation of the valve under varying down hole conditions and signaling requirements.