JOHN ARTHUR OPPEL
Engineers in Delaware
License number
Pennsylvania PE012155L
Category
Engineers
Type
Professional Engineer
Address
Address
2
Delaware
Secane, PA 19018
Secane, PA 19018
Professional information
Electric Circuit Breaker With Electromagnetic-Assist Means For Opposing Magnetic Contact-Separating Forces
US Patent:
4032870, Jun 28, 1977
Filed:
Sep 15, 1975
Appl. No.:
5/613656
Inventors:
John A. Oppel - Aldan PA
Virgel E. Phillips - Springfield PA
Virgel E. Phillips - Springfield PA
Assignee:
General Electric Company - Philadelphia PA
International Classification:
H01H 342
US Classification:
335195
Abstract:
An electric circuit breaker comprises first and second contacts, which engage each other while the circuit breaker is fully closed and both of which are movable. During the initial portion of an opening operation, the two contacts move together and remain engaged. First electromagnetic-assist means develops while the contacts are engaged a magnetic force on the first contact varying directly with current through the contacts which urges the first contact toward the second contact. Second electromagnetic-assist means develops while the contacts are engaged a magnetic force on the second contact varying directly with current through the contacts which urges the second contact toward the first contact. Means is provided to block motion of the first contact with the second contact after initial opening motion of the second contact and to prevent during subsequent opening motion of the second contact the transmission of force from the first electromagnetic-assist means to the second contact.