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. 29, 2009
Filed:
Oct. 17, 2005
Applicant:
Josef Thomas Hafner, Rorschacherberg, CH;
Inventor:
Josef Thomas Hafner, Rorschacherberg, CH;
Assignee:
Bruderer AG, Frasnacht, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21J 9/18 (2006.01); B30B 1/26 (2006.01); B21D 22/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention concerns a multistage press, at which within the machine-mounted clamping plate (), an insert () is arranged which can alternatingly be moved in the direction towards the press plunger () and away from it. The insert () is moved up and down by a cam drive actuated by the press main drive with lifting and lowering cams (), whose cam tracks () are traced by lifting rollers () and lowering rollers () under compressive prestress. Such a multistage press can be operated with a high number of strokes per minute and has, at the same time, an excellent precision of the stroke movement.