Implements or apparatus for applying pushing or pulling force – Hoisting truck – Single throw lever
Reexamination Certificate
2006-06-06
2006-06-06
Watson, Robert C. (Department: 3723)
Implements or apparatus for applying pushing or pulling force
Hoisting truck
Single throw lever
Reexamination Certificate
active
07055801
ABSTRACT:
A quick-rise hydraulic lifting mechanism includes a lift arm, the lift arm being pivotable about an axis; a hydraulic actuator operably connected to the lift arm, the hydraulic actuator having an oil vacuum relief; and a mechanical actuator operably attached to the lift arm, the mechanical actuator comprising: a ratchet mechanism; and, an articulated linkage connecting the ratchet mechanism to the lift arm, wherein the articulated linkage comprises a pull bar, a push bar, and a pivotable link interconnecting the pull bar and the push bar, the pull bar being operably connected to the ratchet mechanism, the push bar being operably connected to the lift arm.
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Hahn Loeser & Parks LLP
Norco Industries Inc.
Watson Robert C.
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