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:
Jun. 11, 2002
Filed:
Dec. 28, 2000
Bo Göransson, Göteborg, SE;
SKF Nova AB, Goteborg, SE;
Abstract
Method and device for production of powder metal bodies comprising: introducing powder material ( ) in a compacting chamber ( ) in a hollow die ( ), compacting the material in mainly axial direction in the compacting chamber by urging a first punch ( ), axially into said compacting chamber, advancing said first punch ( ) further into compacting chamber for further compacting the powder material and imparting upon the die plate ( ) a biasing tension, causing the edge portion of the die opening to move under increasing tension in the same direction as the first punch ( ), thereby causing opening radial size reduction, causing axial compression also in a direction opposed to that by the first punch ( ) by a second punch ( ), arranged to move opposed relative the die ( ) as compared to that of the first punch ( ), and retracting the first punch ( ) axially, thereby relieving the hollow die from its biasing and regaining initial form, thereby simultaneously expelling the compact thus formed.