Excavating – Ditcher – Condition responsive
Patent
1995-03-30
1996-11-12
Reese, Randolph A.
Excavating
Ditcher
Condition responsive
36442407, 172 2, 172 4, 414699, 37907, G06G 764, G05D 104, E02F 343, E02F 920
Patent
active
055728090
ABSTRACT:
An apparatus and method for controlling a hydraulically operated construction machine, having a plurality of tandem articulated members which are controlled in a manner that movement of one of the members is controlled in response to movement of another of the members, in order to move the members in a predetermined pattern. The members are controlled in response to the anticipated future movement of the another member. Anticipated future movement of the another member may be determined, for example, as a function of the present position and velocity of the another member and system delay in movement of the another member. Where the another member is controlled manually by an operator control lever coupled with a manual hydraulic control valve, anticipated future movement may be determined by monitoring actuation of the control lever.
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Product bulletin entitled "Automatic Excavation Depth Measuring Device", published in the United States by Komatsu, publication date unknown.
Product brochure entitled "Laser-Level-System For Controlling Excavation Depth," published in the United States by Moba Electronics, publication date unknown.
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Steenwyk Timothy E.
Walstra Eric J.
Beach Thomas A.
Laser Alignment, Inc.
Reese Randolph A.
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