Solenoid operated pressure regulating valve
US5184644A · kind A · utility
13Cited by
49References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | May 30, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86614
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pressure control device, preferably for use in a control system of an automatic transmission of a motor vehicle, is shown as having a solenoid motor assembly the armature of which, through a cooperating servo orifice, is effective for varying the magnitude of pressure of a fluid medium acting upon a spool slave-like valving member. The spool valving member has at least two cylindrical axially spaced valving portions with one of such valving portions having a diametrical dimension substantially greater than that of the other of the at least two cylindrical axially spaced valving portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.