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. 07, 2009
Filed:
Mar. 25, 2004
Zbigniew Zurecki, Macungie, PA (US);
Ranajit Ghosh, Allentown, PA (US);
John Herbert Frey, Allentown, PA (US);
Lance Michael Grimm, Bowmanstown, PA (US);
Zbigniew Zurecki, Macungie, PA (US);
Ranajit Ghosh, Allentown, PA (US);
John Herbert Frey, Allentown, PA (US);
Lance Michael Grimm, Bowmanstown, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A method and apparatus for improving the surface finish and/or surface integrity of a workpiece formed or shaped with a tool increase the surface hardness of the workpiece during forming or shaping of the workpiece. A method and apparatus for forming or shaping a workpiece also increase the surface hardness of the workpiece during forming or shaping of the workpiece with a tool, as do a method and apparatus for manufacturing a finished part or product from a workpiece. In some embodiments, an expanding jet of cryogen may be jetted to a surface of a workpiece and a tool from a nozzle, wherein the cryogen is at least partially separated into a condensed phase portion and a vapor portion within a downstream portion of the nozzle.