G - Physics – 01 – P
Patent
G - Physics
01
P
349/40, 349/53
G01P 13/00 (2006.01) G01L 5/14 (2006.01) G01L 23/10 (2006.01) G01V 1/133 (2006.01) G01V 1/26 (2006.01)
Patent
CA 1145841
735.074 S P E C I F I C A T I O N AIR GUN FIRING SENSOR APPARATUS AND SYSTEM INVENTOR: AUGUSTUS H. FISKE, JR. ABSTRACT OF THE DISCLOSURE An air gun firing sensor apparatus and system are provided for determining the instant of firing of an air gun by sensing pressure changes within the air gun when it is being fired. A pressure-change-sensitive trans- ducer assembly is inserted into a socket in the housing of a solenoid-controlled valve of an air gun with a passage from the air gun communicating with the transducer for transmitting to the transducer a pressure surge occurring within the air gun whenever it is fired. The transducer assembly has a cylindrical casing with a head mounted at one end. The head includes a plurality of spaced recesses which are adapted to communicate with the passage leading from the air gun. A pressure-sensitive transducer is mounted in the head wall between and adjacent to these recesses, in effect being sandwiched in the head wall between these recesses with the transducer extending parallel to the recesses, whereby a pressure surge occurring simultaneously in the recesses is transmitted through the head wall to the transducers, being transmitted in a direction transverse to the axes of the respective recesses. Accordingly, a pressure pulse produced by the firing of the air gun squeezes the portions of the head wall between these recesses inwardly applying pressure to the transducer which generates a voltage indicative of the instant of firing of the air gun being monitored.
362977
Bolt Associates Inc.
Westell & Hanley
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