Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Conduit snakes
Patent
1976-09-27
1977-09-20
Spar, Robert J.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
Conduit snakes
212 8R, 212 55, 212 65, 214 86A, B66C 2360
Patent
active
040492389
ABSTRACT:
A truck crane for use on a vehicle frame that includes a support frame including a pair of spaced apart support members, with means for pivotally mounting the support members at substantially one end thereof between operative and inoperative positions. To obtain various positions an extension device is cooperatively associated with the support members and includes a pair of extension members, each extension member and a respective support member being interfitted one within the other and being slidable and longitudinally adjustable relatively to its support member, so as to be adjustable between extended and retracted positions. Bridging means interconnecting the extension members at the free end is provided with releasably interconnecting means for retaining the support members and the extension members in longitudinally aligned extended and retracted positions.
Hydraulic means is pivotally connected at one end thereof to the vehicle frame and at the opposite end pivotally connected to the support members, so as to support the support frame in selected operative positions. Winch means is contained on the vehicle, and cable means having a hook at one end extending over the bridging means and connected to the winch means at the opposite end thereof is utilized.
REFERENCES:
patent: 1690372 (1928-11-01), Livesay
patent: 2740535 (1956-04-01), Bill
patent: 2907473 (1959-10-01), Garnett
patent: 3092367 (1963-06-01), Selby
patent: 3167200 (1965-01-01), Booker
patent: 3888368 (1975-06-01), Hawkins
Spar Robert J.
Underwood Donald W.
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