Electricity: circuit makers and breakers – Suspended-wire controlled
Patent
1980-10-03
1982-07-27
Little, Willis
Electricity: circuit makers and breakers
Suspended-wire controlled
200325, H01H 2140
Patent
active
043419321
ABSTRACT:
An electrical switch comprising a snap-acting actuator (22) movable with a snap action between two configurations to control the making and breaking of electrical contacts (3, 6), a latching member which, when the actuator blade has snap-acted in one sense to break or make the contacts restrains return movement of a movable contact carrying member (22) (which may be the actuator) to prevent re-making of re-breaking of the contacts until the latching member is positively displaced, the latching member comprising a spring member (7) having an arm (10) defining a portion (18) for restraining return movement of the movable contact carrying member (22), the engaging portion (18) being arranged to move in a direction substantially parallel to the plane of the actuator blade between a latching position and a non-latching position and being biassed towards the latching position, the spring member (7) also having an operating portion (12) at an angle to the arm (10) and movable in a direction generally transverse to said plane to cause movement of said engaging portion (18) from the latching to the non-latching position, so as to permit return movement of the movable contact carrying member.
REFERENCES:
patent: 304557 (1884-09-01), Pirnie
patent: 2753413 (1956-07-01), Anderson
patent: 2822440 (1958-02-01), Karlsson
patent: 3213244 (1965-10-01), McCarrick
Little Willis
Otter Controls Limited
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