John D Parolin

US Patent:

39653110, Jun 22, 1976

Filed:

Dec 30, 1974

Appl. No.:

5/537349

Inventors:

John J. Parolin - South Boston MA

Assignee:

Cole-Hersee Company - South Boston MA

International Classification:

H01H 1510
H01H 312

US Classification:

200 16C

Abstract:

According to the invention, there are a plurality of insulatedly separated fixed contact means for connection to external circuits, movable contact means for selectively interconnecting predetermined ones of the fixed contact means, armature means movable in first and second opposed directions for coacting with the movable contact means for establishing a predetermined interconnecting relationship among the fixed contact means, and means coupling the movable contact means to the armature means responsive to movement of the armature means in the first and second directions for establishing first and second different interconnecting relationships, respectively, among the fixed contact means. According to a more specific aspect of the invention, the first interconnecting relationship includes keeping a first predetermined pair of fixed contact means interconnected by the movable contact means independently of the armature means position and the second interconnecting relationship includes the interruption of the interconnection between the first predetermined pair of fixed contact means. The switching apparatus according to the invention also preferably includes means responsive only to the position of the armature means for selectively interconnecting a second predetermined pair of the fixed contact means.