Tool driving or impacting – Automatic control of power operated means
Patent
1979-01-19
1984-11-27
Mackey, Robert
Tool driving or impacting
Automatic control of power operated means
173 43, 91171, 13762563, E21C 100, F15B 1500
Patent
active
044846371
ABSTRACT:
In a pivotally mounted rock drill boom and feed bar apparatus, the pivots of the boom and the feed bar positioner include angle sensors comprising cam actuated fluid pressure regulating valves. The pressure regulating valves are disposed in a control circuit which includes a pilot pressure fluid actuated control valve which senses an unbalanced pressure signal generated by the sensor connected to the boom pivot in response to movement of the boom about said pivot. The control valve responds to the unbalanced pressure condition by valving fluid to the feed bar positioner actuator to maintain the feed bar in a predetermined directional attitude. The angle sensor mounted on the boom pivot may be adjusted independent of movement of the boom to cause a change in the directional attitude of the feed bar as desired.
REFERENCES:
patent: 3374975 (1968-03-01), Bronder
patent: 3481409 (1969-12-01), Westerlund
patent: 3997062 (1976-12-01), Hassall et al.
patent: 4037671 (1977-07-01), Kimber et al.
patent: 4114650 (1978-09-01), Gordon
Cooper Industries Inc.
Mackey Robert
LandOfFree
Positioning control system for rock drill support apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Positioning control system for rock drill support apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positioning control system for rock drill support apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2130027