Patent · US Expired

Thread rolling tap

US6514148B2 · kind B2 · utility

6Cited by

6References

7Claims

0Family size

Assignee

EMUGE-Werk Richard Glimpel Fabrik fuer Praezisionswerkzeuge vormals Moschkau & Glimpel · DE

Inventors

Helmut Glimpel · Achern, DE
Dietmar Maier · Achern, DE
Dietmar Liebau · Pommelsbrunn, DE
Rainer Fritsch · Aachen, DE

Key dates

Filing date	Dec 5, 2000
Grant date	Feb 4, 2003
Priority date	—
Expiry date	Dec 5, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23G7/02
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A thread rolling tap including a stem portion, and a thread forming portion having a body with a plurality of thread turns formed on the body and including a front entrance region and a guide region, with the thread turns having each, in the front region in vicinity of the body, inclined pressure flanks forming side surfaces of an acute angle and connected by an outer, arranged radially outwardly with respect to the body, pressure surface formed as a flattening having opposite rounded edges extending along a circumference of a respective thread turn.

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