Static structures (e.g. – buildings) – Mechanism operated relatively movable shaft assembly – Tilts relative to base
Patent
1980-08-25
1982-09-07
Machado, Reinaldo P.
Static structures (e.g., buildings)
Mechanism operated relatively movable shaft assembly
Tilts relative to base
52121, 173 28, 173 43, E04H 1234, E21C 900
Patent
active
043476929
ABSTRACT:
A portable drilling rig for mounting on a flatbed truck or other carrier vehicle, includes a turntable rotatably mounted on the truck bed; a slide pivotally mounted on the top of the turntable for rotation around a horizontal axis; a hydraulic cylinder interconnecting the turntable and slide for raising and lowering one end of the slide so that the slide can be tilted from a transport position to an operating position beside the truck; a carriage slidably mounted on the slide, the position of the carrier on the slide being controlled by a winch, pulley and cable system; a derrick pivotally mounted on the carriage for rotation between the transport and operating positions, and a hydraulic cylinder interconnecting the carriage and the derrick for causing the derrick to move between the transport and operating positions.
REFERENCES:
patent: 298625 (1884-05-01), Saunders
patent: 2954210 (1960-09-01), Comfort
patent: 3089550 (1963-05-01), Watson
patent: 3144135 (1964-08-01), Brown
patent: 3340938 (1967-09-01), Wilson
patent: 3356163 (1967-12-01), Rowe
patent: 3412812 (1968-11-01), Kindsfater
patent: 3576218 (1971-04-01), Lisenby
patent: 3645343 (1972-02-01), Mays
patent: 3877528 (1975-04-01), Reierdal
Dunsmuir George H.
Machado Reinaldo P.
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