Pushbutton capacitive transducer
Variable capacitance type push-button switch
Electrical switch assembly and method of manufacture Patent #: 4446342
ApplicationNo. 07/251605 filed on 09/30/1988
US Classes:361/288, Push button200/517, Including additional actuator200/600CAPACITIVE SWITCH
ExaminersPrimary: Griffin, Ronald W.
Attorney, Agent or Firm
International ClassesH01H 13/70 (20060101)
H03K 17/975 (20060101)
H03K 17/94 (20060101)
AbstractIn a capacitive-type switch having two capacitive levels, a relatively thin blade of a desired dielectric material is interposed between two capacitive plates by downward actuation of a push-button switch so that the plates become separated by the blade. When the push button is released, the blade is removed from between the two capacitive plates and a high capacitance level is once again achieved.