Patent · US Expired

On-line corner rounder

US4407177A · kind A · utility

1Cited by

11References

9Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Alfred Schmidt · Weingarten, DE
Michael H. Shearon · Elkton, US

Key dates

Filing date	May 24, 1982
Grant date	Oct 4, 1983
Priority date	—
Expiry date	May 24, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T83/9389
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An apparatus for cutting round corners on advancing sheets. The sheets are cut from a web and advanced continuously to a transport roll provided with aligned corner-rounding assemblies located to meet the line of cut between successive sheets.

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