Hydraulic boring device

Details Hydraulic boring device Hydraulic boring device

1977-01-21

1978-09-05

Krizmanich, George H.

Pipe joints or couplings

End to side or plate

Swivel with lateral port to annular sleeve

285281, F16L 2700

Patent

active

041114680

ABSTRACT:
A boring device is disclosed wherein a boring bit is rotated as it is advanced and supplied with water through a hollow interior to facilitate the boring operation. A rotary connection introduces water into the hollow boring bit and its support means from one side thereof through an apertured sphere secured to and revolving with the support means.

REFERENCES:
patent: 1100416 (1914-06-01), Barger
patent: 1532774 (1925-04-01), Page
patent: 2328898 (1943-09-01), Goff et al.
patent: 3210099 (1965-10-01), Franck
patent: 3492025 (1970-01-01), Holland
patent: 3814193 (1974-06-01), Schneider
patent: 3829134 (1974-08-01), Hutchison

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