Quick-change ram boring head

Details Quick-change ram boring head Quick-change ram boring head

1989-12-04

1992-06-30

Bui, Thuy M.

Boring or penetrating the earth

Boring without earth removal

175135, 175293, 173118, 173122, 173133, E21B 1102

Patent

active

051254620

ABSTRACT:
In a ram boring machine that has a striking piston reciprocating in a tubular housing and a striking tip that may be formed as a chisel and projects from the housing, connection of the striking tip to the housing by means of a bayonet joint makes installation and removal or replacement of the striking piston or a worn chisel possible in a simple manner.

REFERENCES:
patent: 1566630 (1925-12-01), Sturtevant
patent: 1859342 (1932-05-01), Rea
patent: 2507585 (1950-05-01), Bassinger
patent: 2634951 (1953-04-01), Snyder
patent: 3049109 (1962-08-01), Schley
patent: 4462468 (1984-07-01), Jenne
patent: 4548278 (1985-10-01), Gidlund
patent: 4632195 (1986-12-01), Emmerich
patent: 4658913 (1987-04-01), Yantsen et al.

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