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. 18, 2010
Filed:
Jun. 30, 2006
Applicants:
F. Dale Pratt, Calgary, CA;
Kenneth A. Lambe, Calgary, CA;
Inventors:
F. Dale Pratt, Calgary, CA;
Kenneth A. Lambe, Calgary, CA;
Assignee:
Newsco Directional and Horizontal Drilling Services Inc., Calgary, Alberta, CA;
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved energy efficient intelligent rotary pulser for generating a mud pulse in a MWD (measurement while drilling) application. In the rotary pulser, a control circuit activates a brushless motor that rotates a windowed restrictor relative to a fixed housing to act as a shutter and window respectively. Opening of the windowed restrictor allows generally unrestricted mud flow. Closing of the windowed restrictor generally restricts mud flow. The windowed restrictor is powered both in opening and closing operations by the motor.