Multi-section actuator

Details Multi-section actuator Multi-section actuator

1995-10-10

1996-09-24

Lopez, F. Daniel

Expansible chamber devices

Relatively movable working members

Moving cylinders

92 133, 91167R, 91173, F01B 1500

Patent

active

055580050

ABSTRACT:
Actuator (1) adapted to be actuated by pressurized fluid as shown for example in FIG. 3, having a plurality of piston-cylinder units (A, B, C, D, E, F) arranged one behind the other and displaceable in the direction of a longitudinal axis (9), in which adjacent parts such as a piston of one unit and a cylinder of the adjacent unit are combined to form a connecting part. The individual piston-cylinder units (A, B, C, D, E, F) are so dimensioned in their lengths that the piston-cylinder units can be provided with different respective stroke lengths (ha, hb, hc, hd, he, hf). The stroke lengths can be varied by devices such as screws with hexagonal sockets (26, 110, 111, 113), and adjusted by a screw-turning tool (34). The actuator (1) has a small number of inexpensive individual parts and is easy to manufacture.

REFERENCES:
patent: 2372923 (1945-04-01), Yerger
patent: 2544793 (1951-03-01), Kelly
patent: 2969042 (1961-01-01), Litz et al.
patent: 3913457 (1975-10-01), Hawley
patent: 4412498 (1983-11-01), Scholl
Control Engineering, "Hydraulic Digital Actuator" by A. H. Delmege et al., Feb. 1965, pp. 69-70.

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