Title: Dashpot solenoid

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.

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Inventors: Read, Jr., Reginald A. (Brookfield, IL, US)

Application Number: 499470
Filing Date: 1974-08-22
Publication_date: 1976-01-13
Assignee:
Primary Class(es): 335/240 335/61, 335/255
Other Classes:
US Patent Ref:

3326511	Jun, 1967	Hallgreen	335/255.
3757263	Sep, 1973	Saarem et al.	335/260.

Other Refs:
Primary Examiner: Broome, Harold
Assistant Examiner:
Attorney: Neuman, Williams, Anderson & Olson