Electricity: circuit makers and breakers – Toggle mechanisms
Patent
1995-06-05
1997-06-17
Walczak, David J.
Electricity: circuit makers and breakers
Toggle mechanisms
200553, 200462, 200465, H01H 2300
Patent
active
056389485
ABSTRACT:
An electric transfer switch includes a three-position toggle mechanism and a crossbar which is mounted on the toggle mechanism. The crossbar carries a plurality of moveable contacts and is rotated by the toggle mechanism. The moveable contacts normally contact one set of the stationary contacts in one closed position which are connected to a normal main power supply. The moveable contacts are rotated to a neutral non-power line in an open position, and are further rotated to another closed position, which are connected to a standby emergency power supply to supply electricity to the transferred electrical loads. The toggle mechanism includes a multi-bar linkage which is rotated by a handle of the toggle mechanism among the open position and two closed positions. A plurality of springs and catches are used to maintain the contact between the moveable contacts and the stationary contacts, even when a "fault" current passes through the contact tips of the moveable and stationary contacts.
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Evenson Rickie Allen
Fabian Alan Norman
Sharaf Nadir
Onan Corporation
Walczak David J.
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