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. 25, 2006
Filed:
Aug. 22, 2002
Jürgen Hinzpeter, Schwarzenbek, DE;
Ulrich Zeuschner, Schwarzenbek, DE;
Ingo Schmidt, Schwarzenbek, DE;
Thomas Pannewitz, Schwarzenbek, DE;
Udo Baltruschat, Hamburg, DE;
Thorsten Ehrich, Hamburg, DE;
Ulf Hauschild, Hamburg, DE;
Jürgen Hinzpeter, Schwarzenbek, DE;
Ulrich Zeuschner, Schwarzenbek, DE;
Ingo Schmidt, Schwarzenbek, DE;
Thomas Pannewitz, Schwarzenbek, DE;
Udo Baltruschat, Hamburg, DE;
Thorsten Ehrich, Hamburg, DE;
Ulf Hauschild, Hamburg, DE;
Fette GmbH, Schwarzenbek, DE;
Abstract
A hydraulic press for compressing metallic powder or the like to form compacts, comprising a die-plate, an upper ram, and at least one lower ram which interact with a die-bore and are operable each by a dual-action hydraulic press cylinder, whereby a limited dead path length is provided for the return stroke in the force path between the press cylinder and the upper ram in which the upper ram is not carried along, and that a separate pressure generator producing a variable pressure is arranged in parallel with the force path via which a compression force is produced on the upper ram during the dead path length.