Device for speed control of cylinder piston, particularly useful

Details Device for speed control of cylinder piston, particularly useful Device for speed control of cylinder piston, particularly useful

1980-12-18

1983-10-25

Bentley, Stephen C.

Ordnance

Breech closures

Screw

91405, 91410, F41F 1107

Patent

active

044111886

ABSTRACT:
In a device for achieving speed control of a cylinder piston in relation to the cylinder, or vice versa, flow control means (12, 32) are utilized, and also cam profiles (15, 16 and 26, 27). The flow control means are composed of two constant flow valves (30a, 30b and 31a, 31b) which determine the flow for one each of the directions of the piston or the cylinder. The cam profile means have a first cam profile (15 and 26, respectively) which is connected when the piston (6) or the cylinder (5) moves in its first direction, and a second cam profile (16 and 27, respectively) which is connected when the piston or cylinder moves in its second direction. The flow control valves are controlled mechanically by the respective cam profiles via its respective control input (12c', 12c") and determine a flow for the piston or cylinder which is dependent on the controlling but independent of the load on the piston or the cylinder.

REFERENCES:
patent: 2379180 (1945-06-01), Pohl
patent: 3186307 (1965-06-01), Ellenbogen

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