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. 22, 1986
Filed:
Oct. 15, 1984
George B Rabe, Sparta, NJ (US);
Foster Wheeler Energy Corporation, Livingston, NJ (US);
Abstract
Apparatus for controlling the flow of a hot material, such as gases emanating from a coal gasification plant, in which a ball is rotatable in a housing having a passage therethrough. Rotation of the valve aligns a passage in the valve with the passage in the housing to permit the passage of fluids through the assembly. Conversely, counterrotation of the ball closes the valve to the passage of fluids. Both the housing and ball are provided with channels for the passage of a cooling fluid therethrough, which prevents destruction of rubber seals, reduces erosion by abrasive materials in the gases, and reduces the thermal distortion which results in poor sealing characteristics.