Electrostatic transducer backplate having open ended grooves

Details Electrostatic transducer backplate having open ended grooves Electrostatic transducer backplate having open ended grooves

H - Electricity

04

R

349/69

H04R 19/00 (2006.01)

Patent

CA 1150393

6148 ABSTRACT The desired groove shape in a backplate of a combination transmitting and receiving, capacitance type, electrostatic trans- ducer are more consistently reproduceable in a die forming operation by utilizing an open ended grooved configuration so that groove shape deforming lubricating fluid, necessary in said die forming operation, and air, can escape from between the die tool and the transducer backplate through said open ended grooves as said grooves are die formed on said backplate.

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