US Patent No: 4,928,730
Number of patents in Portfolio can not be more than 2000
Proportional electromagnetic valve having amplifier therein
Stats
-
May 29, 1990
Issued date -
Jul 19, 1988
filing date -
07/221,416
serial no -
Expired
status
Importance
Loading Importance Indicators...
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.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 4,418,720 Solenoid operated directional valves having modular construction | 12 | 1981 | |
|
|
|||
| 4,308,891 Terminal blocks and indicator for solenoid valves | 26 | 1980 | |
|
|
|||
| 4,458,289 Solenoid drive for valves | 3 | 1982 | |
|
|
|||
| 4,796,661 Proportional electro-hydraulic pressure control valve | 25 | 1986 | |