Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Vacuum or hermetically sealed type
Patent
1978-08-18
1980-09-30
Braun, Fred L.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Vacuum or hermetically sealed type
29622, 335154, H01H 1100, H01H 166, H01H 5100
Patent
active
042258367
ABSTRACT:
A magnetic relay having an electromagnetic coil with an open center extending lengthwise therethrough and an outer tube of magnetic material enclosing it lengthwise. A pair of radially expandable disks of magnetic material are positioned in the outer tube across the ends of the coil and a pair of inner tubes of magnetic material are positioned axially aligned with each other through the central openings in the disks and in the open center of the coil about a switch contact, e.g. a reed switch capsule. The adjacent ends of the inner tubes are spaced apart to form a gap adjacent the coacting ends of the switch contact. These inner tubes are of a size in the open center of the coil to pass freely through the central openings in the disks and of a larger size at the location of the disks such that these inner tubes urge the disks to expand radially into tight contact with the inside of the outer tube.
REFERENCES:
patent: 3284741 (1966-11-01), Conklin
patent: 3434080 (1969-03-01), Mengelberg
patent: 3522566 (1970-08-01), Van Horn
patent: 3711798 (1973-01-01), Richert
patent: 3987383 (1976-10-01), Antonitsch
DeMaesschalck Etienne
Geelen Evrard
Braun Fred L.
C.P. Clare International, N.V.
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