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:
Jan. 08, 1985
Filed:
Sep. 01, 1982
Richard A Miller, North Huntingdon, PA (US);
Gerald G Lessman, Pleasant Hills Boro, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
Apparatus and method are disclosed for machining and, in particular, welding a work piece in an environment comprised of a gas non-reactive to the material of the work piece to minimize the contamination of the welds effected on the work piece. In an illustrative embodiment of this invention, there is provided a welding chamber for receiving the work piece and for establishing the welding environment therein. The welding chamber has an input port disposed in a bottom portion thereof, that is coupled to means in the form of a controllable pump for directing or pumping the non-reactive or inert gas, e.g. argon, through the input port and into the welding chamber. The welding chamber also includes an output port, whereby the non-reactive gas may escape from the welding chamber. A diffuser plate distributes the non-reactive gas substantially uniformly across the cross section of the welding chamber, whereby a laminar flow of the non-reactive gas is directed over the work piece and is permitted to escape through the output port.