Electromagnetic switch device

Details Electromagnetic switch device Electromagnetic switch device

1982-03-29

1983-09-13

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335126, 335255, H01H 5002

Patent

active

044045336

ABSTRACT:
At least one yoke member and a bobbin carrying a solenoid are accommodated within a housing, with one end wall of the housing, the yoke member and the bobbin being in axial alignment. An air passage extends through the yoke member, the bobbin and the end wall of the housing to establish communication between the atmosphere and an internal space defined within a cap member which is fixed to the other end of the housing and in which switch contacts are positioned. A sleeve is clamped at its one end between the end wall of the housing and a yoke member, and its other end terminates at an intermediate portion of the bobbin. Said other end of the housing has an annular tip caulked to the cap member along its entire circumference. Further, a stopper is disposed for pressure contact with a portion of the movable core to prohibit movement of the movable core in a direction away from the stationary core beyond a predetermined position.

REFERENCES:
patent: 4293835 (1981-10-01), Davis et al.

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