Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1996-07-17
1998-09-22
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
3408531, 3408532, 3408561, 3408562, 200 82A, 200 82R, G01V 142
Patent
active
058118942
ABSTRACT:
A safety module which is intended to be used in an oil or gas production installation and to be lowered to a required depth with an electrically operable tool connected thereto, and which comprises a housing (2), a pressure sensitive switch (3) and a temperature sensitive switch in the housing which are adapted to switch at predetermined pressure and temperature values respectively, in which the pressure sensitive switch and the temperature sensitive switch only allow an electrical command signal to be conveyed to the tool when the pressure and temperature both reach the predetermined pressure and temperature values.
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Buyers Mark
Fraser Simon Benedict
Ganjian Peter
Shoop Jr. William M.
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