Compact rotary switch construction
AssigneeTektronix, Inc.
InventorsJohn E. Reichen, Scott B. Long
Life of this patent
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Abstract
An improved shaft-operated rotary switch construction for printed circuitry applications is disclosed. The improved switch is a modular design incorporating a standardized rotor element accommodating the mounting of wiper contacts in different positions and different operational orientations. Also disclosed is an improved releasable clutch mechanism providing one mode of operation in which the rotors of different switch sections are coupled together for simultaneous rotation, and another mode in which they are rotatable independently, the operating mode being selected by axial movement of one section's operating shaft relative to that of the other.
Claims10
In a multiposition rotary electrical switch having a stator comprising an insulating substrate bearing a plurality of electrical contact pads arranged in multiple concentric rings on a surface thereof, a rotor comprising a disklike insulating body mounting electrical contact means for simultaneously engaging selected pads in different ones of said rings to interconnect the selected pads, said contact means comprising a multifinger wiper, and means including a shaft supporting said rotor in faceopposed relation to said substrate for rotation relative thereto upon axial rotation of said shaft, the improvement wherein
- said insulating body includes means on a face thereof for mounting said wiper in either of two different operational orientations, the fingers of said wiper extending in one rotational direction when mounted in one of said orientations and in the opposite rotational direction when mounted in the other of said orientations, and
- said wiper is mounted in a selected one of said orientations.
In a plural section multiposition rotary electrical switch having at least a pair of stators, each comprising an insulating substrate bearing a set of electrical contact pads arranged in multiple concentric rings on a surface thereof, at least a pair of rotors including one operatively associated with each stator, each rotor comprising a disklike insulating body mounting electrical contact means for simultaneously engaging selected pads in different rings of the associated stator's pad set to interconnect the selected pads, said contact means comprising a multifinger wiper, and means including shaft means supporting said rotors in face-opposed relation to the pad-bearing surfaces of their associated stators for rotation relative thereto upon axial rotation of said shaft means, the improvement wherein
- each rotor's insulating body includes means on a face thereof for mounting said wiper thereon in either of two different operational orientations, the fingers of said wiper extending in one rotational direction when mounted in one of said orientations and in the opposite rotational direction when mounted in the other of said orientations, and
- a multifinger wiper is mounted in a selected operational orientation on each of said rotors.
In a multiposition rotary electrical switch having a pair of stators, a pair of rotors, each rotor of said pair being operatively associated with a different stator, and means including shaft means supporting said rotors for rotation relative to their associated stators, said shaft means including a pair of axially aligned shaft sections, each supporting a different rotor,
- means intermediate said rotors enabling selective rotation of either rotor independent of the other, comprising means releasably coupling said shaft sections together for conjoint rotation and means for decoupling said shaft sections upon axial movement of one shaft section relative to the other.
Dependencies are inferred from the claim text.