| 发明名称 |
STYREANORDNING FOR ELEKTRISK MOTOR |
| 摘要 |
An electric motor-control system. The motor load is a beam-type pumping unit which has an upstroke and a downstroke in each cycle. Loss of normal load during the downstroke only is detected by comparison with a preset normal-load signal and the motor is shut down. |
| 申请公布号 |
NO140251(B) |
申请公布日期 |
1979.04.17 |
| 申请号 |
NO19730002328 |
申请日期 |
1973.06.04 |
| 申请人 |
TEXACO DEVELOPMENT CORP, |
发明人 |
HUBBY, LAURENCE MEADE,;MEYER, HERBERT JORAM, |
| 分类号 |
H02P29/00;(IPC1-7):H02P7/58;H02H7/08 |
主分类号 |
H02P29/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
