Knife with disposable inserts
AssigneeKey Knife, Inc.
InventorThomas Charles Hinchliff
Life of this patent
Estimating the term…
Abstract
A knife with disposable inserts. Either (1) a front side of the knife body has a cutting edge, the front side of the insert is removably mounted to a rear side of the knife body, and either (A) a rear side of the insert has a cutting edge, or (B) the rear side of the insert has a blunt face that forms a rear side of the knife; or (2) a rear side of the knife body has a blunt face that forms the rear side of the knife, the rear side of the insert is removably mounted to the front side of the knife body, and the front side of the insert has a cutting edge.
Claims24
A composite knife having a cutting edge and defining an acute cutting angle for the cutting edge, the cutting angle establishing, in a selected reference plane perpendicular to the cutting edge, a first reference axis that bisects the cutting angle and a second reference axis perpendicular to the first reference axis, the composite knife comprising:
- a cutting edge insert having a front end that includes the cutting edge and a threaded insert mounting hole;
- and
- a knife body for removably mounting the insert, the knife body having a body mounting hole adapted to align with the insert mounting hole when the insert is mounted to the knife body, so that the insert mounting hole and knife body mounting hole share a common hole axis;
- the cutting edge insert and knife body being cooperatively adapted so that, in an operative, assembled configuration of the knife in which an elongate fastener is inserted through the body mounting hole and a threaded end of the fastener is threaded into the insert mounting hole and the fastener is tightened so as to produce a compressive force between the cutting edge insert and the knife body directed along the common hole axis for removably mounting the cutting edge insert to the knife body, the insert will contact the knife body at respective compression supporting surfaces of the cutting edge insert and knife body, and an interlocking portion of the cutting edge insert will mate with a corresponding interlocking portion of the knife body, the interlocking portions being distinct from the respective compression supporting surfaces, wherein the common hole axis is closer to being parallel to the first reference axis than the second reference axis.
A method for cutting an article, comprising:
- providing a composite knife having a cutting edge and defining an acute cutting angle for the cutting edge, the cutting angle establishing, in a selected reference plane perpendicular to the cutting edge, a first reference axis that bisects the cutting angle and a second reference axis perpendicular to the first reference axis, the composite knife including a cutting edge insert having a front end that includes the cutting edge and a threaded insert mounting hole, and a knife body for removably mounting the insert, the knife body having a body mounting hole adapted to align with the insert mounting hole when the insert is mounted to the knife body, so that the insert mounting hole and knife body mounting hole share a common hole axis;
- producing an operative, assembled configuration of the knife including inserting an elongate fastener through the body mounting hole, threading a threaded end of the fastener into the insert mounting hole, and tightening the fastener so as to produce a compressive force between the cutting edge insert and the knife body directed along the common hole axis and thereby removably mounting the cutting edge insert to the knife body so that the insert contacts the knife body at respective compression supporting surfaces of the cutting edge insert and knife body, and an interlocking portion of the cutting edge insert mates with a corresponding interlocking portion of the knife body, the interlocking portions being distinct from the respective compression supporting surfaces, wherein the common hole axis is closer to being parallel to the first reference axis than the second reference axis;
- and
- using the knife in said operative, assembled configuration to cut the article.
Dependencies are inferred from the claim text.