Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1987-02-27
1988-08-09
Recla, Henry J.
Electricity: circuit makers and breakers
Liquid contact
Time delay
74 2, H01H 330
Patent
active
047629711
ABSTRACT:
In a spring operating mechanism for a circuit interrupter the rotational force of an electric motor rotates a ratchet wheel securely mounted to a main shaft to charge the closing spring, the ratchet wheel having a pawl to hold the ratchet wheel and main shaft in open and closed positions against the force of the closing spring, and energy of the closing spring is used for the closing and tripping of the circuit interrupter. The main shaft is provided with a one-way rotary clutch which allows rotation of the ratchet wheel and main shaft in a first direction and prevents rotation in the opposite direction to reduce the impact force engagement between the pawl and the ratchet teeth at the end of the closing operation as the ratchet wheel and shaft reach the closed position.
REFERENCES:
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patent: 3542160 (1970-11-01), Sacchini
patent: 3600540 (1971-08-01), Bould
patent: 3689720 (1972-09-01), Patel
patent: 3689721 (1972-09-01), McGuffie
patent: 3773995 (1973-11-01), Davies
patent: 4039058 (1977-08-01), Trzebiatowski
patent: 4163133 (1979-07-01), Bould
patent: 4240300 (1980-12-01), Tanaka
patent: 4578551 (1986-03-01), Lin
Mitsubishi Denki & Kabushiki Kaisha
Recla Henry J.
Sholl Linda J.
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