Hermetically sealed instrument transducer with external sensitivity selection

• US 3,390,286 A
• Filed: 03/29/1966
• Issued: 06/25/1968
• Est. Priority Date: 03/29/1966
• Status: Expired due to Term

• Current Assignee: Bell & Howell LLC (Böwe Systec AG)
• Original Assignee: Billy R. Tolliver, James H. Gradin, John T. Blessum, Neil R. Richardson
• Inventors: Gradin, James H., Tolliver, Billy R., Blessum, John T., Richardson, Neil R.
• Application Number:
  US04/538,331
• Time in Patent Office: 819 Days
• US Class Current: 310/329
• CPC Class Codes: G01P 15/0907 of the compression mode type

Claims

1. AN INSTRUMENT TRANSDUCER INCLUDING A HOUSING, SIGNAL GENERATING MEANS IN THE HOUSING FOR GENERATING A SIGNAL IN RESPOSE TO VARIATIONS IN A SELECTED PHYSICAL PHENOMENON PRESENTED TO THE TRANSDUCER AND TO WHICH THE TRANSDUCER IS SENSITIVE, TERMINAL MEANS INCLUDING A PAIR OF TERMINAL MEMBERS CARRIED BY THE HOUSING ACCESSIBLE TO THE EXTERIOR THEREOF AND EXTENDING INTO THE INTERIOR THEREOF, CIRCUIT MEANS IN THE HOUSING COUPLED BETWEEN THE SIGNAL GENERATING MEANS AND THE TERMINAL MEANS FOR OPERATING UPON THE GENERATED SIGNAL IN A SELECTED MANNER DETERMINED BY THE CIRCUIT MEANS AND FOR PRESENTING THE SIGNAL AS OPERATED UPON TO THE TERMINAL MEANS OTHER THAN THE TERMINAL MEMBERS AS A TRANSDUCER OUTPUT SIGNAL, MEANS CONDUCTIVELY CONNECTING EACH TERMINAL MEMBER TO A SEPARATE LOCATION IN THE CIRCUIT MEANS, AND MEANS HERMETICALLY SEALING AND CLOSING THE HOUSING INCLUDING AROUND THE TERMINAL MEANS.