Tool driving or impacting – With vehicle support for drive – Drive structure moved to nonuse position for transport
Patent
1993-11-30
1995-01-03
Jones, Eugenia
Tool driving or impacting
With vehicle support for drive
Drive structure moved to nonuse position for transport
173185, 173192, 173 42, E21B 702
Patent
active
053777670
ABSTRACT:
A hole digger assembly which includes a truck, a turntable on the truck, a boom mounted to the truck via links, cylinders between the links and the turntable and between the boom and the turntable for moving the boom, a drill mechanism which is mounted to the boom, and a cylinder for moving the drill mechanism between an operative position and a storage position at which the drill mechanism is parallel to the boom and partly located between two opposed side walls of the boom.
REFERENCES:
patent: 2375799 (1945-05-01), Tourneau
patent: 2903949 (1959-09-01), Simmonds
patent: 3022839 (1962-02-01), Troche
patent: 3073397 (1963-01-01), Balogh
patent: 3306373 (1967-02-01), Pitman et al.
patent: 3527309 (1970-09-01), Rassieur
patent: 3548604 (1970-12-01), Campbell
patent: 3576218 (1971-04-01), Lisenby
patent: 3744574 (1973-07-01), Carley
patent: 3884359 (1975-05-01), Suverkrop
patent: 3999805 (1976-12-01), Lockwood
patent: 4938296 (1990-07-01), Brazell, II
patent: 5094302 (1992-03-01), Back
Jones Eugenia
Schrock Allan M.
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