Solenoid pre-loader
US5244180A · kind A · utility
23Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Sep 3, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M51/0653
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The solenoid portion of a solenoid-operated valve is resiliently biased by a pre-loader against an internal shoulder on the valve body to maintain precision of the stator-armature working gap during the useful life of the valve. Several embodiments of pre-loader are disclosed, including a Belleville spring, a wave spring, and an elastomeric ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.