Air manifold and delivery passageways for rock drill

Details Air manifold and delivery passageways for rock drill Air manifold and delivery passageways for rock drill

1974-06-21

1976-12-21

Purser, Ernest R.

Tool driving or impacting

Impacting devices

With means for rotating tool

173 78, 173DIG2, E21C 112

Patent

active

039982793

ABSTRACT:
An improved fluid operated rock drill apparatus having all fluid connections thereto secured to the yoke of the drill assembly by a unitary connector means. The yoke is centrally located so that the high pressure fluid being directed to the rock drill hammer piston flows through a path of reduced length resulting in a more efficient operation.

REFERENCES:
patent: 3125361 (1964-03-01), Weaver
patent: 3157237 (1964-11-01), Kurt
patent: 3305249 (1967-02-01), Zahuranec
patent: 3307638 (1967-03-01), Kurt
patent: 3406763 (1973-10-01), Worman
patent: 3453007 (1969-07-01), Roland
patent: 3527482 (1970-09-01), Casterline et al.
patent: 3666024 (1972-05-01), Beaumont
patent: 3677577 (1972-07-01), Krauer et al.
patent: 3747632 (1973-07-01), Kok et al.

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