Electrically operated valve assembly for controlling a piston and cylinder construction, piston and cylinder assembly incorporating said valve, and self-contained system including pressurized fluid and hydraulic actuator
US4674398A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Jul 24, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L29/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electrically operated valve assembly including a valve member maintained on a seat by a tensioned wire or filament which is heated to permit the valve member to move off of its seat. A piston and cylinder assembly including a conduit therein for permitting pressurized fluid to actuate the piston when an electrically operated valve of the type described above is actuated. A self-contained system including a reservoir, compressible liquid in the reservoir, a squib for pressurizing the compressible liquid, a piston and cylinder, a conduit between the reservoir and the cylinder, and a valve of the above-described type in the conduit for selectively admitting pressurized compressed liquid to the cylinder. A piston and cylinder system including a plurality of the above-described valve assemblies and associated conduits for selectively admitting hydraulic liquid to opposite sides of the piston to move it in opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.