Implements or apparatus for applying pushing or pulling force – Hoisting truck – Single throw lever
Patent
1990-09-28
1993-02-02
Swann, J. J.
Implements or apparatus for applying pushing or pulling force
Hoisting truck
Single throw lever
403328, B66F 504
Patent
active
051832356
ABSTRACT:
A two-part jack system includes a mechanical jack stand with a ratchet mechanism and a ratchet release, and a power unit that may be selectively aligned with and attached to the jack stand for raising or lowering it. A unitary control mechanism carried by the power unit selectively locks the power unit in an aligned position relative to the jack stand, and also selectively releases the ratchet release of the jack stand. A locking mechanism is carried in part by the jack stand and in part by the power unit. The unitary control mechanism has three different operating positions. In one operating position the locking mechanism is kept locked while the ratchet release is left in an unreleased state; in a second operating position the locking mechanism is kept locked while the ratchet release is released; and in the third operating position the locking mechanism is held in an unlocked condition while the ratchet release is left in an unreleased state. The power unit has an operating handle, and a single lever which operates the unitary control mechanism is carried on the power unit operating handle for convenient access and easy control by a human operator.
REFERENCES:
patent: 86242 (1869-01-01), Newcomb
patent: 2601878 (1952-07-01), Anderson
patent: 3192814 (1965-07-01), Zimmerman
patent: 3353857 (1967-11-01), Mongor
patent: 3901498 (1975-08-01), Novak
patent: 4002094 (1977-01-01), Erickson et al.
patent: 4462569 (1984-07-01), Arzouman
patent: 4678213 (1987-07-01), Brasuell et al.
patent: 4697788 (1987-10-01), Arzouman
patent: 4798113 (1989-01-01), Viazanko
patent: 4934233 (1990-06-01), Brundage et al.
Arzouman Harry H.
Slay Clyde E.
Arant Gene W.
Safe-T-Jack, Inc.
Swann J. J.
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