Patent ID: 9172406
Filing Date: 2015-10-27
Classification: F16L,H04B

Abstract:
1. A transmitter comprising: a pressure resistant housing which is pressure sealed to prevent collapse and leakage against an external fluid pressure of at least 250 psig; a transmitter assembly which is entirely positioned and entirely sealed within said pressure resistant housing, said transmitter assembly comprising a ferromagnetic tube and an electromagnetic coil wrapped around said ferromagnetic tube; said pressure resistant housing having an access opening for removably inserting one or more batteries for said transmitter assembly such that said one or more batteries will be received within said ferromagnetic tube; said pressure resistant housing comprises a sealable outer metal tube wherein said outer metal tube surrounds said ferromagnetic tube and said electromagnetic coil and said access opening is located at a longitudinal end of said outer metal tube; said pressure resistant housing including a closure for closing said access opening such that said transmitter assembly and said one or more batteries are sealingly enclosed within said pressure resistant housing and an electrical contact is formed between said closure and said outer metal tube; and a battery contacting member extending from said closure a sufficient distance to make electrical contact with one of said one or more batteries within said ferromagnetic tube such that an electrical circuit is formed between said transmitter assembly and said battery contacting member to conduct an electrical current through said battery contacting member, said closure, and said outer metal tube.