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:
Dec. 06, 2011
Filed:
Sep. 21, 2007
Timothy M. Campbell, Hartland, WI (US);
Joel H. Mandel, Hartford, WI (US);
Donald J. Phillips, Menomonee Falls, WI (US);
Donald D. Cooper, Fond du Lac, WI (US);
Henry J. Knott, Ypsilanti, MI (US);
Timothy M. Campbell, Hartland, WI (US);
Joel H. Mandel, Hartford, WI (US);
Donald J. Phillips, Menomonee Falls, WI (US);
Donald D. Cooper, Fond du Lac, WI (US);
Henry J. Knott, Ypsilanti, MI (US);
GKN Sinter Metals LLC, Auburn Hills, MI (US);
Abstract
A method is disclosed of forming a powder metal compact. Powder metal is placed in an annular space of a compaction die tool set in which the annular space has inner and outer cylindrical surfaces that form inner and outer cylindrical surfaces of the powder metal compact. An elastomeric tool has a first cylindrical surface adjacent to a fixed cylindrical surface of the compaction die tool set that is radially fixed and further has a second cylindrical surface, opposite to the first cylindrical surface, that touches the powder metal. The powder metal is compressed to form the powder metal compact by applying an external axial force on the elastomeric tool while maintaining the diameter of the fixed cylindrical surface so as to cause the elastomeric tool to compress the second cylindrical surface of the elastomeric tool against the powder metal.