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Class Information
Number: 334/80
Name: Tuners > Variable capacitor tuned > With variable spacing between plates
Description: Subject matter in which the variable capacitor is so constructed that the spacing between the plates of the capacitor may be varied to thus change the capacitance of the capacitor as, for example, by placing a series of resiliently biased stacked plates under a variable pressure.

Patents under this class:

Patent Number Title Of Patent Date Issued
8598969 PCB-based tuners for RF cavity filters Dec. 3, 2013
6701779 Perpendicular torsion micro-electromechanical switch Mar. 9, 2004
4897624 Unitary capacitance trimmer Jan. 30, 1990
4612668 FM wireless transmitter Sep. 16, 1986
4467393 Trimming capacitor Aug. 21, 1984

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