Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – With pump
Patent
1984-10-31
1986-12-30
Levy, Stuart S.
Boring or penetrating the earth
With above-ground means for handling drilling fluid or cutting
With pump
173 28, 180 22, 180 2406, 280104, 403389, E21B 1718, E21B 702, B62D 6110, F16B 100
Patent
active
046321942
ABSTRACT:
There is described a vehicle or vehicle frame including a first elongated sub-frame and a second sub-frame rotatably connected to one end of the first sub-frame for pivotal movement about the longitudinal axis of the first sub-frame. A walking beam is provided at each of the elongated sides of the first sub-frame in parallel, spaced apart relation thereto. A walking beam pivot assembly extends transversely across the first sub-frame adjacent the other end of the first sub-frame and each of the walking beams is pivotally connected at a point intermediate along its length to a respective outer end of the pivot assembly whereby each walking beam is suspended for independent pivotal movement in its own vertical plane. A connector is provided to join a first end of each walking beam to the adjacent end of the second sub-frame to permit simultaneous pivotal movements of the walking beams and the second sub-frame in their respective, mutually perpendicular vertical planes.
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Averill Stuart A.
Hokanson Lyle W.
Kroeker David G.
Averill Stuart A.
Hannon Thomas R.
Levy Stuart S.
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