Electrically operated refrigerant valve
US4896860A · kind A · utility
21Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1989 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | May 8, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A solenoid operated refrigerant expansion valve, particularly for automotive air conditioning systems, having a center-post guided tubular armature which slides on the post to provide valving of cross-ports communicating with a hollow region in the post which communicates with the valve outlet. The tubular armature has a pair of sleeves disposed on the interior at opposite ends thereof which provide the sole sliding contact surfaces on the post for minimizing friction therebetween to reduce the tendency of the armature to seize on the post.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.