Longwall mining machine with haulage motor sensed pressure contr

Details Longwall mining machine with haulage motor sensed pressure contr Longwall mining machine with haulage motor sensed pressure contr

1976-02-13

1977-08-30

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

299 47, 188 67, E21C 2916

Patent

active

040450830

ABSTRACT:
The control of a mineral mining machine having a hydraulic haulage motor senses the pressure of pressure fluid fed to the drive motor to apply brake mechanism when the sensed pressure is below a preselected value.

REFERENCES:
patent: 2171204 (1939-08-01), Vickers
patent: 2327325 (1943-08-01), Zavatkay
patent: 3253683 (1966-05-01), Stein
patent: 3439579 (1969-04-01), Guinot
patent: 3486592 (1969-12-01), Kolk et al.
patent: 3647027 (1972-03-01), Jaseph

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