Tool driving or impacting – With vehicle support for drive – Drive structure moved to nonuse position for transport
Patent
1994-01-24
1996-02-27
Rada, Rinaldi I.
Tool driving or impacting
With vehicle support for drive
Drive structure moved to nonuse position for transport
173 90, 173184, E02D 710
Patent
active
054941172
ABSTRACT:
A metal fence post driving apparatus is formed by a platform rearwardly supported by the three point hitch of a conventional tractor and having a fluid pressure generating unit on the platform driven by the tractor power takeoff. A mast having a top end portion rotatable about its vertical axis pivotally supports a boom intermediate its ends for horizontal and vertical pivoting movement of its respective end portions by a first fluid pressure operated cylinder. A second fluid pressure cylinder pays out and retracts one end portion of the wire line of a block and tackle unit for elevating and lowering a fluid pressure operated reciprocating unit axially disposed on a post top to be driven into the ground.
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patent: 2659583 (1953-11-01), Dorkins
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patent: 3117635 (1964-01-01), Deerkoski
patent: 3696625 (1972-10-01), Alexander
patent: 4051684 (1977-10-01), Fulkerson et al.
patent: 5010710 (1991-04-01), Gray et al.
patent: 5107592 (1992-04-01), Downey et al.
patent: 5211248 (1993-05-01), Nosewicz et al.
patent: 5343962 (1994-09-01), Daigle et al.
Rada Rinaldi I.
Rhea Robert K.
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