发明名称 |
Drive shifting apparatus for valve control and the like |
摘要 |
A drive shifting apparatus for a valve control and the like is provided with a source of power for motor operation, a separate source of power for hand operation and a shifting means shiftable between the hand power and motor power sources. The shifting means may be a spring loaded clutch normally connecting the motor power source with the valve control, a latch means to hold the clutch in the hand power position against the spring pressure and a cam on the motor automatically releasing the latch when the motor is energized.
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申请公布号 |
US4429591(A) |
申请公布日期 |
1984.02.07 |
申请号 |
US19810252322 |
申请日期 |
1981.04.09 |
申请人 |
EIM COMPANY, INC. |
发明人 |
ZUCH, HOWARD W.;WEBER, PAUL |
分类号 |
F16K31/05;(IPC1-7):F16H35/00;F16K31/02 |
主分类号 |
F16K31/05 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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