Pneumatic actuator for butterfly valves

Details Pneumatic actuator for butterfly valves Pneumatic actuator for butterfly valves

1993-10-26

1995-05-30

Denion, Thomas E.

Expansible chamber devices

Rectilinearly moving working member and coaxial or parallel...

74 99A, F01B 300

Patent

active

054192374

ABSTRACT:
For transmission of an axial movement of an activation piston (10), as a rotary movement of an output shaft (22) is used an intermediate tube sleeve (16) which is picked up non-turnably, yet displaceably, inside a fixed tube section (4) of an actuator housing (2,6). The tube sleeve (16) has opposed axial tracks (20) to catch a cross-pin (18) on the fixed tube section and also a helical track (26) to catch a projecting tap (24) on the output shaft (22). All pertinent wear and tear will appear on the tube sleeve and the applied taps, and these parts will be easy to replace in addition to which they may be produced in a wear resistant embodiment.

REFERENCES:
patent: 3450382 (1969-06-01), Calim
patent: 4120479 (1978-10-01), Thompson et al.
patent: 4504038 (1985-03-01), King
patent: 4651969 (1987-03-01), Dowdall
patent: 5108073 (1992-04-01), Adachi
patent: 5134923 (1992-08-01), Wexler

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