Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1979-02-14
1980-11-11
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335278, H01H 708
Patent
active
042335841
ABSTRACT:
To provide for effective sealing of the solenoid coil structure with respect to fluid, the flow of which is to be controlled, a sleeve with a closed bottom, preferably integral with the sleeve, is inserted in the coil, and is in gap-free engagement with a core portion extending into the opening of the solenoid coil, a plunger-type armature being movable within the sleeve. The outer portion of the sleeve is sealed to the housing, for example by a solder connection, so that the interior of the solenoid is separated in liquid-tight relationship from the interior of the sleeve to prevent contamination of the space containing the winding by fluid being controlled by the valve. The housing, at the outside, may be formed with a groove in which a sealing ring is located to seal the housing to a pump assembly with which the valve is to be used.
REFERENCES:
patent: 3598360 (1971-08-01), Merriner
patent: 4067541 (1978-01-01), Hunter
patent: 4073277 (1978-02-01), Eheim
patent: 4088975 (1978-05-01), Lang
Broome Harold
Robert & Bosch GmbH
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