Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1995-06-05
1996-09-03
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335172, 335167, H01H 7500
Patent
active
055527540
ABSTRACT:
An electric switch includes a plurality of moveable contacts and a plurality of stationary contacts which firmly contact with the moveable contacts in a normal closed position by a spring, such as a leaf spring or a compression spring. The electric switch further includes a locking member which is disposed between two adjacent moveable contacts. When a "fault" current passes through the moveable contacts and the stationary contacts, a repulsive force is caused at the contact tips such that it tends to open the contact between the moveable and stationary contacts. The "fault" current also causes adjacent moveable contacts to attract to each other thus has tendency to open the contact. The locking member which is disposed between the neighboring moveable contacts engages with the moveable contacts so as to maintain the contact between the moveable contacts and the stationary contacts. The locking member has two oblique surfaces, one on each side, to face to the moveable contacts.
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Donovan Lincoln
Onan Corporation
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