All terrain drill unit

Details All terrain drill unit All terrain drill unit

1979-09-13

1981-12-01

Mackey, Robert

Tool driving or impacting

With indicating or signaling means

173 27, 173 28, E21C 1102

Patent

active

043031307

ABSTRACT:
A self-propelled all terrain drill unit having propulsion means for the chassis, a drilling mast mounted on the latter for movement between horizontal and vertical positions and a drilling head carried by the mast wherein all major functions are performed hydraulically, the hydraulic functions being divided into two groups; those of propelling the vehicle to a drilling site and operating the drill at the site provided by a variable displacement pump and those of adjusting the position of the machine at the site and aligning and positioning the drilling head provided by an independent pump.

REFERENCES:
patent: 2594098 (1952-04-01), Vanderzee
patent: 2646968 (1953-07-01), Curtis
patent: 2807441 (1957-09-01), Sewell
patent: 2904310 (1959-09-01), Leonard
patent: 2985250 (1961-05-01), Goodrich et al.
patent: 3017935 (1962-01-01), Galbraith et al.
patent: 3696625 (1972-10-01), Alexander
patent: 3744574 (1973-07-01), Carley
patent: 3815689 (1974-06-01), Kuhl
patent: 3823902 (1974-07-01), Bumueller
patent: 3835940 (1974-09-01), Winter, Jr.
patent: 4068728 (1978-01-01), Subrick

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