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. 29, 2002
Filed:
May. 02, 2001
Apparatus and method for eliminating electrical noise in the fire detect timing signal of an air gun
Applicant:
Inventors:
David McCall, Richmond, TX (US);
Algernon S. Badger, East Bernard, TX (US);
Assignee:
Input/Output, Inc., Stafford, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 1/04 ; H04R 2/300 ;
U.S. Cl.
CPC ...
G01V 1/04 ; H04R 2/300 ;
Abstract
The invention describes an air gun for use in a marine seismic system. The air gun includes a gun body and shuttle that define a chamber containing a compressed supply of gas. The air gun is further designed to release the compressed gas so that the release time or gun fire time is monitored with sufficient accuracy. The fire time is measured by a timing coil that determines the location of the air gun shuttle by sensing a magnet disposed on the shuttle. The timing coil is designed to eliminate interference caused by magnetic flux generated by the actuation of an air gun solenoid valve.