Circuit breaker with an anti-lift pivot handle

A circuit breaker handle (88) is provided with a curved bearing surface (314) at its pivot point. The handle bearing surface (314) has a substantially constant radius and is connected to the body of the handle with a necked down handle extension (332). The handle extension (332) has a width that is...

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Bibliographic Details
Main Authors LANCE GULA, TRENT ALLAN CHONTAS, HENRY KENNETH PRUSZYNSKI, YU WEI CHOU, JAMES ALAN TRAX
Format Patent
LanguageEnglish
Published 01.11.2001
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:A circuit breaker handle (88) is provided with a curved bearing surface (314) at its pivot point. The handle bearing surface (314) has a substantially constant radius and is connected to the body of the handle with a necked down handle extension (332). The handle extension (332) has a width that is less than the width of the curved bearing surface (314) at the point of connection between the bearing surface (314) and the necked down region (332). The handle (88) pivot (314) mates with a corresponding bearing surface (312) on a notch in the side plate (86) that it pivots within. The arc of the curved bearing surface (312) in the side plate (86) is greater than that of the corresponding bearing surface (312) on the handle (88) and captures the handle pivot (314) within the notch in the sideplate (86), so the handle (88) cannot lift off the bearing surface (312) on the notch as it is moved.
Bibliography:Application Number: AU19990021288