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. 28, 2004
Filed:
Jan. 17, 2003
Christian Leppin, Schaffhausen, CH;
Markus Gehrig, Schaffhausen, CH;
Abstract
A device for forming a single or mutli-chamber workpiece by high internal pressure created by a medium capable of flow in the hollow interior of the workpiece. The device contains a forming tool with a cavity accommodating the workpiece and pressure generating equipment for generating the high internal pressure. The pressure generating equipment contains a displacement pump with a pressure converter having a longitudinally coupled displacement body with different working surface areas A , A , which operates with a stroke frequency f, whereby strokes of the pressure converter cause a pressure p created on the primary side to be raised until a higher secondary pressure p is reached on the secondary side.