Pressure pulse generator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 22, 2004
Grant Date -
Aug 14, 2003
app pub date -
Jan 8, 2003
filing date -
Jul 10, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure pulse generator comprising a circuit (12) filled with a pressure fluid, and at least one communication channel (15) that is connected to the circuit and via which the pressure fluid can flow into and out of the circuit. The pressure pulse generator comprises a first pair (8, 9) and a second pair (10, 11) of electrically controlled valves that are connected in series, and the first pair of valves (8,9) is arranged in said circuit (12) upstream the at least one communication channel (15), and the second pair of valves (10, 11) is arranged in said circuit (12) downstream the at least one communication channel (15).
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