Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1977-11-25
1980-01-08
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335271, 137 66, H01F 708
Patent
active
041830008
ABSTRACT:
The fail-safe gas valve solenoid construction disclosed herein employs a fixed electromagnet which, when energized, actuates an operating rod by means of an armature which is relatively loosely secured to the shaft to permit self-alignment between the magnet and the armature. Relative movement and wear between the armature and the shaft is inhibited by an elastomeric washer or O-ring which is interposed between the armature and a corresponding or facing surface associated with the shaft, the washer being under slight compression.
REFERENCES:
patent: 2288417 (1942-06-01), Paille
patent: 2313890 (1943-03-01), Ray
patent: 3259811 (1966-07-01), Dunn
patent: 3952774 (1976-04-01), Loveless
Harris George
Saunier Duval
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