Patent · US Expired

Clamping system for a knife having an angular cross-section

US4338771A · kind A · utility

4Cited by

13References

3Claims

0Family size

Assignee

VEB Werkzeugkombinat Schmalkalden · DE

Inventors

Wolfgang Hummel · Dresden, DE
Gerhard Koch · Nagold, DE
Siegfried Wilhelm
Horst Zorn · Schmalkalden, DE

Key dates

Filing date	Nov 3, 1980
Grant date	Jul 13, 1982
Priority date	—
Expiry date	Nov 3, 2000

Classification

Technology area (CPC A)Human Necessities
CPC primaryA01F29/095
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention is directed to a clamping system for knives with angular cross-sections, especially suited for agricultural cutting operations in which a portion of the length of the sidepiece extending the cutting edge of the knife protrudes over the knife holder when the knife is clamped, with the clamping element engaging the knife in the area of its angular bend. This system allows for a reduction of knife thicknesses while maintaining other desirable characteristics, and provides the knife with greater strength in the area stressed by bending as compared with the unclamped position of the knife.

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