Piston drive

Details Piston drive Piston drive

1989-03-24

1991-01-15

Look, Edward K.

Expansible chamber devices

Displacement control of plural cylinders arranged in...

Axial adjustment of spaced, rigidly interconnected working...

92 57, F15B 1524

Patent

active

049845080

ABSTRACT:
A piston drive such as a piston drive for actuating a valve includes a piston which reciprocates between two end positions which are defined by respective sleeve-shaped inserts projecting into the path of movement of the piston and being axially displaceable by respective worm drives. One insert with the pertaining worm drive is usable for emergency actuation while the other insert with the pertaining worm drive is usable for limiting the stroke of the piston.

REFERENCES:
patent: 579186 (1897-03-01), Sickafoose et al.
patent: 708598 (1902-09-01), Thomas
patent: 856569 (1907-06-01), Catlin
patent: 2922397 (1960-01-01), Haanes
patent: 3003470 (1961-10-01), Geyer
patent: 3896280 (1975-07-01), Blake
patent: 4176586 (1979-12-01), Stoll et al.

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