Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1976-01-30
1978-12-12
Schaefer, Robert K.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
408 6, H01H 3524, H01H 4500
Patent
active
041297890
ABSTRACT:
A machine control circuit in which the sharpness of a machine tool cutting edge is sensed as a function of the pressure in a hydraulic tool-feed cylinder, and in which the machine is automatically de-activated for tool inspection after a pass is completed when the feed pressure reaches a preselected level.
REFERENCES:
patent: 2978689 (1961-04-01), Tech et al.
patent: 3299697 (1967-01-01), Sparling
patent: 3625622 (1971-12-01), Wright
patent: 3720120 (1973-03-01), Cutler
patent: 4025218 (1977-05-01), Logan et al.
Indyk Eugene S.
Schaefer Robert K.
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