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:
Oct. 24, 2017
Filed:
Feb. 07, 2014
Applicant:
Xact Downhole Telemetry Inc., Calgary, CA;
Inventor:
John Godfrey McRory, Calgary, CA;
Assignee:
XACT Downhole Telemetry Inc., Calgary, Alberta, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/16 (2006.01); E21B 47/14 (2006.01); B06B 1/02 (2006.01);
U.S. Cl.
CPC ...
E21B 47/16 (2013.01); B06B 1/0215 (2013.01); E21B 47/14 (2013.01); B06B 2201/55 (2013.01); B06B 2201/73 (2013.01);
Abstract
An acoustic transmitter for transmitting an acoustic signal through a downhole medium includes a voltage source; a composite load; and switching circuitry that applies voltage from the voltage source across the composite load in response to a drive signal. The composite load includes charge control circuitry, in the form of at least one inductor, connected electrically in series with a piezoelectric transducer that may be electrically modeled as a capacitor.