Driving mechanism, function part and shut-off valve

Details Driving mechanism, function part and shut-off valve Driving mechanism, function part and shut-off valve

2005-03-29

2005-03-29

Lee, Kevin (Department: 3753)

Fluid handling

Convertible

Units interchangeable between alternate locations

C251S129040

Reexamination Certificate

active

06871663

ABSTRACT:
The invention relates to a pneumatic, reciprocating rotary driving mechanism unit for operating a shut-off member in a shut-off valve, comprising a substantially closed housing, in which a drive shaft (30) is journalled, a pneumatic control valve (39-42) for controlling said drive shaft and first signal transmitting means (54, 55) for delivering control signals to said pneumatic control valve, wherein the housing consists of a base part (48), in which the drive shaft and the pneumatic control valve are present, and a first function part (53), in which the first signal transmitting means are present, which first function part is detachably and exchangeably connected to said base part so as to make it possible to exchange said first function part for a second function part containing second signal transmitting means of a type for the purpose of changing the manner in which the drive shaft can be controlled.

REFERENCES:
patent: 3189700 (1965-06-01), Eidson
patent: 3589387 (1971-06-01), Raymond
patent: 3976098 (1976-08-01), Raymond
patent: 4150686 (1979-04-01), El Sherif et al.
patent: 4964273 (1990-10-01), Nash
patent: 6422532 (2002-07-01), Garner
patent: 6715400 (2004-04-01), Muth et al.
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patent: 2 738 789 (1997-03-01), None
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patent: WO 96 31704 (1996-10-01), None
International Search Report for PCT/NL01/00750, issued Feb. 11, 2002.

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