Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Patent
1995-03-31
1996-10-15
Tolin, Gerald P.
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
29622, 200467, 337391, H01H 3534, H01H 1336
Patent
active
055656668
ABSTRACT:
A switch for interrupting an electrical circuit in response to a mechanical interaction, such as an overpressure or underpressure condition. The switch includes an actuation arm electrically connected to a common terminal. The actuation arm is moveable between a first position and a second position in response to the mechanical condition. The switch further includes an M-blade operatively connected to the actuation arm. The M-blade levers from a first configuration to a second configuration when the actuation arm moves from the first position to the second position. The M-blade completes the electrical circuit in the first configuration and interrupts the electrical circuit in the second configuration. The switch further includes a reset actuator disposed to engage the M-blade in response to a reset actuation. The M-blade levers from the second configuration to the first configuration when the reset actuator engages the M-blade and the actuation arm is not in the second position.
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patent: 5001317 (1991-03-01), Atkinson
Kautz, Tom, "M-Blade Study Progress Report," Jun. 14, 1993. pp. 1-60.
"Tie-Down-Safe Thermostat. (M2)" pp. 5,6 no date.
Johnson Service Company
Tolin Gerald P.
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