Metallurgical apparatus – Means sealing or opening aperture in vessel
Patent
1990-10-26
1991-12-03
Kastler, S.
Metallurgical apparatus
Means sealing or opening aperture in vessel
266 45, C21C 548
Patent
active
050694308
ABSTRACT:
A blast furnace tap hole drill is provided having an elongated feedshell which supports a percussion drill, drill rod assembly, and a centralizing drill rod support disposed between the percussion drill and a stationary forward end drill rod support, and a drive means for advancing the percussion drill and centralizing drill rod support in unison along the length of the feedshell such that the advancing motion of the centralizing drill rod support ceases as it nears the forward drill rod support without stopping the advancing motion of the percussion drill.
REFERENCES:
patent: 3507484 (1970-04-01), Honda
patent: 4335265 (1982-06-01), Roberge et al.
patent: 4418894 (1983-12-01), Mailliet
patent: 4431171 (1984-02-01), Foster
patent: 4602770 (1986-07-01), Mailliet et al.
patent: 4893794 (1990-01-01), Mailliet et al.
Mathews Ronald J.
Woodings Robert T.
Kastler S.
Sexton Forest C.
Woodings Industrial Corporation
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