Patent · US Active

Knives and knife assemblies

US8082958B2 · kind B2 · utility

2Cited by

7References

27Claims

0Family size

Assignee

Iggesund Tools AB · SE

Inventors

Mats Engnell · Iggesund, SE
Aaron J. Adent · Tampa, US

Key dates

Filing date	Oct 24, 2008
Grant date	Dec 27, 2011
Priority date	—
Expiry date	Nov 20, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T407/1938
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A knife includes first and second edges, a ridge, a concave surface, and a planar surface. The edges are defined by intersections of outer edge forming surfaces on an outer side of the knife and inner edge forming surfaces on an inner side of the knife. The ridge is on the inner side and the crest of the ridge is parallel to the first and second edges. The concave surface is between an inner edge forming surface and the ridge, and the planar surface is adjacent to the concave surface and between that first inner edge forming surface and the concave surface. A reference plane intersects the first and second edges, and a distance between any point on the concave surface and the reference plane is not less than a distance between any point on the planar surface and the reference plane.

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