Electricity: circuit makers and breakers – Multiple circuit control – Sequential operations
Patent
1988-12-23
1989-12-05
Scott, A. R.
Electricity: circuit makers and breakers
Multiple circuit control
Sequential operations
200 6B, 200 6BB, 200 6C, 200559, H01H 2180
Patent
active
048854352
ABSTRACT:
A manually operated switch that combines spring and contact functions in a low profile, machine-insertable component. The switch readily mounts onto a printed wiring board. It includes a cantilevered leaf spring member having one free end and a pair of spaced-apart fulcrums at the other end; one of the fulcrums being at the point of attachment of the leaf spring to the printed wiring board and the other being a re-entrant bend in the leaf spring in the vicinity of its center. An actuator is positioned to apply a force between the fulcrums such that the free end moves in a direction opposite to the direction of the applied force. Each spring member in combination with suitably placed contact pads is capable of providing a separate switch operation such as: "make" operation, "break" operation, or make-before-break "transfer" operation. A single actuator operates one or more spring members, each independently providing a different one of the above-described switch operations.
REFERENCES:
patent: 2958752 (1960-11-01), Horman
patent: 3562464 (1971-02-01), Vollum et al.
patent: 3619532 (1971-11-01), Lyvang
patent: 3764762 (1973-10-01), Roeser
patent: 3900709 (1975-08-01), Sheesley et al.
patent: 4070555 (1978-01-01), Carli
patent: 4081632 (1978-03-01), Schaffeler
patent: 4099037 (1978-07-01), Hartzler et al.
patent: 4395609 (1983-07-01), Sowash
patent: 4424420 (1984-01-01), Haskins
AT&T Information Systems Inc.
Morra Michael A.
Scott A. R.
Telephone and Telegraph Company
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