Single stroke control system

Details Single stroke control system Single stroke control system

1976-12-22

1978-02-07

Herrmann, Allan D.

192 clutches and power-stop control

Stop mechanism

Safety device

192 12C, 100 53, B30B 1514, F16D 6704, F16D 7100

Patent

active

040722228

ABSTRACT:
A single cycle control system for a press or the like in which interrupted stroke protection is combined with novel interconnections of the control components in the system such that the failure of any single control component cannot endanger the operator of the machine. Relay failure (even a simultaneous failure of two) is completely eliminated as a possible source of an unexpected repeat stroke of the machine. The solenoids for operating the air valves that control the operation of the machine are energized initially through the usual run switches for the machine, after which these solenoids are kept energized through separate holding circuits which include limit switches operated by the machine and switches operated by the respective air valves.

REFERENCES:
patent: 3004647 (1961-10-01), Andrus et al.
patent: 3509976 (1970-05-01), Coon
patent: 3749005 (1973-07-01), Einecker et al.
patent: 3889503 (1975-06-01), Luenser

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