Patent · US Active

Compression punch for a rotary press

US9821525B2 · kind B2 · utility

0Cited by

2References

7Claims

0Family size

Assignee

FETTE GMBH · DE

Inventors

Friedrich Meissner · Schwarzenbek, DE
Stefan Luedemann · Hamburg, DE
Jan Naeve · Gudow, DE

Key dates

Filing date	Jun 22, 2010
Grant date	Nov 21, 2017
Priority date	—
Expiry date	Nov 26, 2035

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB30B15/065
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A compression punch for a rotary press, with a shaft, a punch head disposed at one shaft end and a compression zone disposed at the other shaft end, wherein the punch head features an upper mirror surface, an outer cylinder surface and a curved transition zone between the mirror surface and the cylinder surface, wherein the mirror surface and the transition zone form a three-dimensional surface, whose course in at least one radial direction can be described by a mathematical function whose second derivative is continuous.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.