Bedrock drilling and excavating apparatus

Details Bedrock drilling and excavating apparatus Bedrock drilling and excavating apparatus

2006-08-15

2006-08-15

Bates, Zakiya W. (Department: 3676)

Boring or penetrating the earth

Below-ground impact members

Fluid-operated

C175S267000, C175S305000, C175S395000

Reexamination Certificate

active

07090038

ABSTRACT:
A bedrock drilling and excavating apparatus receives power from a rotational power source to drive a drill to strike and shatter bedrock under the gravity of the apparatus and reciprocal vibrations of a pneumatic unit located on the apparatus. The apparatus includes a coupling device to couple with the rotational power source and an air intake vibration structure, a coupling sleeve which has one end coupling with the lower end of a coupling axle and a connector which further couples to the pneumatic unit, and a drill coupling to the pneumatic unit. The pneumatic unit drives the drill to vibrate up and down reciprocally to strike and shatter bedrock. The drill has a drill shell which is alterable according to the diameter of the service shaft without changing the diameter of the pneumatic unit. The drill shell has a plurality of conical drill gimlets mounted thereon in different biased angles to shatter the bedrock and improve drilling and excavating effect.

REFERENCES:
patent: 6454025 (2002-09-01), Runquist et al.
patent: 415320 (1989-12-01), None
patent: 356896 (1999-04-01), None

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