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:
Apr. 28, 1987
Filed:
Jul. 02, 1985
Applicant:
Inventor:
Thomas Kramer-Wasserka, Werne, DE;
Assignee:
Institut CERAC S.A., Ecublens, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21C / ;
U.S. Cl.
CPC ...
299 81 ; 251209 ; 299 17 ;
Abstract
A high pressure water valve (18) supplies water under very high pressure to nozzles (14) for cutting rock or concrete by water jets emitted from the nozzles. A valve plug (30,48) rotates in bearing rings (27) and cooperates with a valve bushing (22;45) of wear resistant high strength material to control the water supply to the nozzles via one or more valve openings (28;51) in said bushing or plug. High pressure water in a pressure opening (33;47) in respectively the plug or bushing forces the plug to sealingly occlude one or more valve openings (28;51) disposed diametrically opposite to said pressure opening.