Dual-port air gun having a single shuttle
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United States of America Patent
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-
Oct 20, 1998
Grant Date -
N/A
app pub date -
Oct 16, 1997
filing date -
Oct 16, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A seismic air gun includes a body, a main chamber, two ports, several air passageways, a shuttle, a return device, and a firing device. The main chamber is within the body. The two ports are in the main chamber. The ports lie along a common axis. The air passageways connect a high pressure air source to the return device, the main chamber, and the firing device. The shuttle slides along the common axis between an open position, in which the main chamber is open, and a closed position, in which the main chamber is closed. The return device biases the shuttle toward the closed position. The firing device causes the shuttle to move from the closed position to the open position whereby pressurized air is released simultaneously from the two ports and in opposite directions.
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