Proportional electromagnetic valve having amplifier therein
US4928730A · kind A · utility
10Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1988 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Jul 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87885
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A proportional electromagnetic valve includes a valve main body having a valve member, a solenoid to drive the valve member, and an amplifier unit to control the solenoid. The solenoid is attached to one or both side portions of the valve main body. The amplifier unit has a size which is almost equal to a size on the unit attaching surface side of the valve main body and solenoids. The casing of the amplifier unit has an enclosing space large enough such that single printed board having all of drive amplifiers attached there to placed in the casing of the amplifier unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.