Dashpot solenoid
US3932826A · kind A · utility
4Cited by
2References
10Claims
0Family size
Inventor
Key dates
| Filing date | Aug 22, 1974 |
| Grant date | Jan 13, 1976 |
| Priority date | — |
| Expiry date | Aug 22, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23P19/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.