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:
Nov. 29, 2011
Filed:
Jul. 17, 2009
Wolfgang Paul, Hamburg, DE;
Kay Simon, Iserlohn, DE;
Thomas Graefenstein, Dortmund, DE;
Steffen Krenzer, Bochum, DE;
Wolfgang Paul, Hamburg, DE;
Kay Simon, Iserlohn, DE;
Thomas Graefenstein, Dortmund, DE;
Steffen Krenzer, Bochum, DE;
Ruhrpumpen GmbH, Witten, DE;
Abstract
A tool used for cutting coke or other hard materials in drums, adapted for being mounted to a boring rod with which the water can be run under pressure into the tool thus that, the water can be run toward the boring and cutting nozzles, being provided with a valve mechanism that can rotate about a coupling angle for releasing and closing the flow channel ports depending on a control input, with a first coupling position of the valve mechanism for boring and another coupling position for cutting, whereby the valve mechanism can be coupled at a water pressure reduced to the coupling pressure by rotating about the coupling angle, is simplified as to construction and handling in that the valve mechanism comprises a valve body in the water intake area of the casing, which has a cylindrical shape and a section for the water flowing inside the casing, as well as being rotationally mounted and having the possibility to be lifted and lowered in a cylindrical section of the inner wall of the casing, the valve body being displaceable at working pressure to a lower position against a spring tension —depending on the preset control for the individual desired function of the tool —and on occurring the coupling pressure, under spring tension, to an upper position relative to a rotating motion of the valve body about the coupling angle.