The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 1986
Filed:
Sep. 02, 1983
Applicant:
Inventors:
Gottfried Traumumiller, Zeltweg, AT;
Wilfried Maier, Zeltweg, AT;
Franz Schoffmann, Leoben, AT;
Herwig Wrulich, Zeltweg, AT;
Assignee:
Voest-Alpine Aktiengesellschaft, Vienna, AT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C / ; E21F / ;
U.S. Cl.
CPC ...
299 81 ; 228166 ;
Abstract
For the supply of water to nozzles on the circumference of a cutting head there are, within a cutting head (1) composed of individual discs (2), provided bores (14 respectively 16) extending in direction to the axis of rotation of the cutting head (1). The individual annular discs (2) are connected one with the other by welding, the weld beads extending over a radial area (a) of the cutting head which is greater than the diameter (b) of the bores (14 respectively 16). The bores (14 respectively 16) extend through the weld beads (19) (FIG. 2).