Patent · US Expired

Vertical broaching machine

US5833411A · kind A · utility

4Cited by

8References

7Claims

0Family size

Assignee

Oswald Forst Maschinenfabrik und Apparatebauanstalt GmbH & Co Kommanditgesellschaft · DE

Inventors

Herbert Holstein · Solingen, DE
Rudolf Dotsch · Solingen, DE
Andreas Berktold · Neuss, DE

Key dates

Filing date	Jun 3, 1997
Grant date	Nov 10, 1998
Priority date	—
Expiry date	Jun 3, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T409/40735
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A vertical broaching machine comprises a machine stand having an upper rail and a lifting carriage displaceably guided on the stand and drivable by means of lifting spindles which are supported in spindle nuts lodged in the rail for rotational driving. An upper workpiece holder is mounted on the rail, holding a broach when a compressive broaching job is carried out.

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