Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Vacuum or hermetically sealed type
Patent
1975-02-13
1976-08-10
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Vacuum or hermetically sealed type
335205, H01H 166
Patent
active
039744698
ABSTRACT:
A magnetic switch assembly including a reed switch is biased by moving the magnetic axis of a permanent magnet with respect to the axis of the reed switch. In one embodiment, the magnet is a disc magnet which is provided with diametrically opposite poles the magnetic axis of the magnet being rotated in a plane spaced from the reed switch. In a further embodiment the magnet is a bar magnet disposed with its magnetic axis parallel to and aligned with the axis of the reed switch. A screw-threaded member received in a bore in the magnet is rotated to move the magnet towards and away from the reed switch to vary the magnetic biasing conditions, guide means are disclosed abutting the magnet so as to maintain the disposition of the magnet with respect to the reed switch during movement of the magnet.
REFERENCES:
patent: 3227838 (1966-01-01), Hoeppel
patent: 3250955 (1966-05-01), Krikac
patent: 3448419 (1969-06-01), Myatt
patent: 3559124 (1971-01-01), Posey
Harris George
The Mettoy Company Limited
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