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CAPACITIVE PRESSURE TRANSDUCER

  • US 3,697,835 A
  • Filed: 05/24/1971
  • Issued: 10/10/1972
  • Est. Priority Date: 05/25/1970
  • Status: Expired due to Term
First Claim
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1. A capacitive pressure transducer comprising, in combination, a casing (12), a diaphragm (10) in said casing and subdividing its interior into a first pressure compartment (62) and a second pressure compartment (64), a first terminal (54), a second terminal (56), a third terminal (58) and a fourth terminal (60) in the wall of said casing (12), a first capacitive electrode (24) and a second capacitive electrode (26) on the wall of said casing confining said first pressure compartment (62), a third capacitive electrode (25) and a fourth capacitive electrode (27) on the wall of said casing confining said second pressure compartment (64), a fifth capacitive electrode (36) and a sixth capacitive electrode (38) on one side of said diaphragm facing said confining wall of said first pressure compartment (62), a seventh capacitive electrode (32) and an eighth capacitive electrode (34) on the opposite side of said diaphragm facing said confining wall of said second pressure compartment (64), a first contact streak (54a) connecting said first terminal (54) by a first connection lug (26a) with said second capacitive electrode (26) and by a second connection lug (25a) with said third capacitive electrode (25), a second contact streak (50) connecting said third terminal (58) by a third connection lug (29) with said seventh capacitive electrode (32) and by a fourth connection lug (28) with said fifth capacitive electrode (36), a third contact streak (56a) connecting said second terminal (56) by a fifth connection lug (24a) with said first capacitive electrode (24) and by a sixth connection lug (27a) with said fourth capacitive electrode (27), and a fourth contact streak (52) connecting said fourth terminal (60) by a seventh connection lug (31) with said eighth capacitive electrode and by an eighth connection lug (30) with said sixth capacitive electrode.

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