Dashpot solenoid

Details Dashpot solenoid Dashpot solenoid

1974-08-22

1976-01-13

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335 61, 335255, H01F 716

Patent

active

039328260

ABSTRACT:
A dashpot solenoid is provided having a thin-walled well with a support ring around an accurately sized and shaped slightly reduced mouth portion and an adjustable air metering orifice at the bottom or opposite end. A plunger coated with a polyfluoro hydrocarbon is sized and shaped to fit within the well such that the clearance between the plunger and the mouth portion of the well provide a functionally airtight sliding fit. In operation the plunger is drawn into the well and air captured therein is permitted to escape through the adjustable metering orifice at a rate which damps the plunger motion.

REFERENCES:
patent: 3326511 (1967-06-01), Hallgreen
patent: 3757263 (1973-09-01), Saarem et al.

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