Cutting tool, particularly hedge shears

US6493943B1 · kind B1 · utility

Assignee

• Fiskars Consumer Oy Ab · FI

Inventor

• Olavi Linden · Karis, FI

Key dates

• Filing date: Jun 30, 2000
• Grant date: Dec 17, 2002
• Expiry date: Jun 30, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01G3/0475
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A cutting tool, particularly hedge shears, comprising a first elongated handle member, a second elongated handle member pivotally connected to the first handle member at a first pivot point, a first blade member having a cutting edge and being pivotally connected to the first handle member at a second pivot point, a second blade member having a cutting edge and being pivotally connected to the second handle member at a third pivot point, the first and the second blade members being pivotally connected to each other at a fourth pivot point, the blade members being turnable relative to the fourth pivot point so that their cutting edges move in a scissor-like manner between an open and a closed position, the first, second, third and fourth pivot points forming a quadrangle in which an angle the vertex of which is formed by the first pivot point is approaching but not reaching 180° when the blade members are approaching their closed position, whereby the work done to close the shears creates a force which tends to close the blade members and is the bigger the closer the blades are to their closed position.