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:
Jun. 21, 1983
Filed:
Dec. 05, 1980
Applicant:
Inventor:
Peter Kogler, Knittelfeld, AT;
Assignee:
Voest-Alpine Aktiengesellschaft, Vienna, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 81 ; 299 89 ; 277 24 ; 277135 ; 277D / ;
Abstract
For the purpose of sealing the annular gap between a cutting arm (2) and cutting heads (6) rotatably supported on this cutting arm (2), a main sealing (12) and an additional sealing element (13) is provided. The area of the annular gap (17) is rinsed by water flowing from the gap in outward direction, the water supply conduit (18) opening into the outward area, being designed as a labyrinth, of the gap (7) via a nozzle (17) (FIG. 3).