Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1997-12-04
2000-08-08
Underwood, Donald W.
Material or article handling
Vertically swinging load support
Shovel or fork type
33710, 92 5R, E02F 343
Patent
active
060992352
ABSTRACT:
An arrangement is provided for determining the relative angular orientation between an excavator bucket and the dipper stick of an excavator. The excavator bucket is mounted on a bucket linkage that is pivotally secured to the end of the dipper stick. An hydraulic actuator has an hydraulic cylinder pivotally connected to the dipper stick, and a piston pivotally connected to the bucket linkage. Extension or contraction of the hydraulic actuator causes the excavator bucket to be pivoted by the bucket linkage with respect to the dipper stick. A cable extension linear position transducer having a transducer casing, a sheath extending from the casing, and an extensible cable extending from the sheath, provides an electrical output related to the extension of the cable from the sheath. A transducer mounting secures the casing of the cable extension linear position transducer in fixed relationship to the hydraulic cylinder. A clip secures the extensible cable to the piston. By this arrangement, extension or contraction of the hydraulic actuator causes the output of the transducer to vary, thus providing an electrical output related to the relative angular orientation of the excavator bucket with respect to the dipper stick.
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Cain Gary Lynn
Piekutowski Richard
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Underwood Donald W.
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