Roof bolt drill support

Details Roof bolt drill support Roof bolt drill support

1988-09-02

1990-06-12

Yost, Frank T.

Tool driving or impacting

Advance causing or controlling means

173 34, 173 36, 173140, E21C 1100

Patent

active

049324810

ABSTRACT:
A mining roof bolt drill feed mechanism whereby the drill is supported on a horizontal pylon extending from an elongate slot in a vertical box section inner strut. The inner strut telescopes within an outer box section strut with an aligned elongate slot, and the pylon is supported on the nut of a dual concentric worm and nut drive system located within the telescopic struts. Elastomeric seals are provided over the elongate slots to prevent the ingress of dust from the mining operation.

REFERENCES:
patent: 3126063 (1964-03-01), Pitt et al.
patent: 3273658 (1966-09-01), Ytterfors et al.
patent: 3871665 (1975-03-01), Burke et al.
patent: 4042248 (1977-08-01), Williamitis
patent: 4448263 (1984-05-01), Becker et al.

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