Fluid handling – Convertible – Unit orientable in a single location between plural positions
Patent
1992-06-05
1994-01-18
Michalsky, Gerald A.
Fluid handling
Convertible
Unit orientable in a single location between plural positions
91 54, 92 59, 92 94, 92 99, 92110, 251 614, 251 615, F15B 1510
Patent
active
052793257
ABSTRACT:
A pneumatic control drive 1, 51, 71 for control devices, in particular control valves, comprises a drive housing 5 and a drive member 11 displaceable therein and to which is affixed a drive element 18 displaceable together with said drive member 11 to actuate the control device and exiting the drive housing 5, said drive member dividing the drive housing 5 into a pressure chamber 12 and a reset chamber 13 with a reset member 15, 16 loading the drive member 11. A position controller 3 is adjacent to one of the chambers (13) and communicates through an inner air-supply duct 30, 28, 55, 74 with the pressure chamber 12, a vent duct 35, 58, 76 issuing from the reset chamber 13 toward a vent aperture. In the invention, the drive element 18 comprises an air-supply duct 24, 25 issuing at the side of the drive member 11 away from the position controller 3 into the pressure chamber 12 there. The air-supply duct 20, 25 extends to a hookup 23 adjacent to the position controller 3, the hookup 23 communicating with the air-supply duct 23, 28, 55.
REFERENCES:
patent: 3426788 (1969-02-01), Bassett
patent: 3799008 (1974-03-01), Danek
patent: 4244392 (1981-01-01), Griswold
patent: 4343224 (1982-08-01), Kemmler
patent: 4505188 (1985-03-01), Weydt et al.
patent: 4509403 (1985-04-01), Gassman et al.
patent: 4922952 (1990-05-01), Kemmler
Arca Regler GmbH
Berenato, III Joseph W.
Michalsky Gerald A.
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