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. 29, 2004
Filed:
Jun. 25, 2002
Applicant:
Inventor:
Alfred Ostertag, Celle, DE;
Assignee:
Ecoroll AG Werkzeugtechnik, Celle, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21B 2/900 ; B21C 3/730 ;
U.S. Cl.
CPC ...
B21B 2/900 ; B21C 3/730 ;
Abstract
For rolling a workpiece with a rolling tool with several rolling elements arranged in hydrostatic bearings, during rolling, only some of the rolling elements engage the workpiece, while the rolling elements not engaging the workpiece essentially seal off the hydrostatic bearing. In such a rolling tool, the rolling elements are arranged so as to be distributed over an area, and each of the hydrostatic bearings includes a circumferential seal in the region of the rolling elements.