Boots – shoes – and leggings
Patent
1991-09-23
1993-10-26
Ruggiero, Joseph
Boots, shoes, and leggings
36442407, 414699, 340685, 37414, G06F 1520, E02F 332
Patent
active
052571777
ABSTRACT:
Apparatus for controlling the movement of hydraulically movable work equipment that is arranged at the end of a length-adjustable and pivotable arm, along a substantially rectilinear path of movement, the work equipment being moved with the assistance of hydraulic drive units that act on the arm in dependence on input control signals that determine the path of movement. Even in the case of non-ideal control loops for the control of the drive units, it is intended that the work equipment be moved along a desired path. For that purpose, starting from an actual position of the work equipment, a sequence of desired positions in the path of movement is ascertained and the work equipment is moved from an actual position to the next desired position, the movement into the next position not being initiated until the work equipment is located in a predetermined tolerance band about the preceding position.
REFERENCES:
patent: 4514796 (1985-04-01), Saulters et al.
patent: 4722044 (1988-01-01), Heiser et al.
patent: 5088020 (1992-02-01), Nishida et al.
patent: 5160239 (1992-11-01), Allen et al.
Aagaard Kjeld
Bach Michael
Fogh Hans E.
Juul Torben
Kristensen John
Danfoss A/S
Easton Wayne B.
Ruggiero Joseph
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