Solenoid operated cartridge valve
US5205531A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1992 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Apr 9, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/1684
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lower cost valve results from the use of a single machined part for a valve housing. The housing is made of a non-magnetic material which can be less expensive and eliminates the requirement for screens or filters in automotive applications. A threadable connection connects a tube stop to the valve housing eliminating the requirement of braising in manufacturing. Finally, a one-piece plunger and pilot valve with a high guiding length minimizes tilting of the pilot. The one-piece housing allows for one common bore for guiding the plunger with the pilot and the poppet. The two ideal concentric surfaces make the poppet outer diameter concentric to the pilot hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.