Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1986-02-12
1987-05-26
Salce, Patrick R.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335191, H01H 7500
Patent
active
046689265
ABSTRACT:
The apparatus of the invention comprises a case housing a fixed contact and a mobile contact carried by a pivoting lever, with resilient return to the closure position, a rocking lever adapted for acting on the pivoting lever in the opening direction in response to an electric fault and a manual control member connected to the pivoting lever. A single spring exerts on the pivoting lever a first torque in the closure direction and on a drive piece blockable by the rocking lever a force adapted to generate on the lever a second torque antagonistic to and greater than the first one. With the manual control member a third torque antagonistic to and greater than the first one is exerted on the pivoting lever.
REFERENCES:
patent: 2843699 (1958-07-01), Leatherberry
patent: 3079479 (1963-02-01), Schwartz et al.
patent: 4550300 (1985-10-01), Jencks et al.
Comtois Patrick
Ingrain Raymond
Moreau Luc
Paggi Serge
Ault Anita M.
Drucker William A.
La Telemecanique Electrique
Salce Patrick R.
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