Implements or apparatus for applying pushing or pulling force – Fluid pressure – Vehicle attached
Patent
1980-01-09
1981-06-16
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Fluid pressure
Vehicle attached
72705, 254124, 254133R, B66F 300
Patent
active
042733111
ABSTRACT:
A portable hydraulically operated rescue tool has a pair of force arms supported for pivotal movement adjacent inner ends and an hydraulic piston-cylinder assembly for pivoting the arms to move the outer end portions of the arms generally toward and away from each other between adjacent and spread apart positions. Spreader plate assemblies are releasably connected to the outer ends of the force arms. Each plate assembly includes a spreader plate connected to an associated force arm to pivot about an axis which extends transversely of the longitudinal axis of the arm and which is spaced longitudinally inwardly from the outer end of the arm. Each plate may be further supported to swivel about a central axis normal to its pivotal axis. One of the plates may have an arcuately concave contour for gripping engagement with a cylindrical member, such as the steering column of a motor vehicle.
REFERENCES:
patent: 1916476 (1933-07-01), Harbaugh et al.
patent: 2560797 (1951-07-01), Humphreys
patent: 2585158 (1952-02-01), Morgenthaler
patent: 2588509 (1952-03-01), Forster
patent: 3317188 (1967-05-01), Linscott et al.
patent: 3762688 (1973-10-01), Leonhardt
patent: 3819153 (1974-06-01), Hurst et al.
Cranjer Company, Inc.
Watson Robert C.
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