Spring actuated power swivel support rollers

Details Spring actuated power swivel support rollers Spring actuated power swivel support rollers

1988-03-03

1989-10-31

Dang, Hoang C.

Boring or penetrating the earth

With means to simultaneously feed and rotate tool from a...

175162, 175220, 187 95, 384 54, 384 57, E21B 302

Patent

active

048770930

ABSTRACT:
A spring actuated guide system for a top driven drilling machine. Rollers for guiding the drilling machine are mounted onto springs which urge the rollers into contact with support surfaces on parallel tracks within a derrick. If the tracks become misaligned, the springs allow for the misalignment with low roller loads thereby providing limited rotational movement of the drilling machine relative to the tracks. Premature failure of the roller bearings is prevented and wear on the rollers and tracks is reduced.

REFERENCES:
patent: 3340938 (1967-09-01), Wilson
patent: 3994350 (1976-11-01), Smith et al.
patent: 4244628 (1981-01-01), Nayler et al.
patent: 4314611 (1982-02-01), Willis
patent: 4345864 (1982-08-01), Smith, Jr. et al.
patent: 4421179 (1983-12-01), Boyadjieff
patent: 4570706 (1986-02-01), Pugnet
patent: 4589503 (1986-05-01), Johnson et al.
patent: 4752102 (1988-06-01), Rasmussen

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