Utility knife blade retention mechanism

Patent metadata

Field	Value
Publication number	US-10464224-B2
Application number	US-201715649325-A
Country	US
Kind code	B2
Filing date	Jul 13, 2017
Priority date	Jul 13, 2017
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A utility knife includes a blade carrier configured to releasably couple to a blade; and a blade retention mechanism coupled to the blade carrier. The blade retention mechanism includes a first actuator; and a second actuator coupled to the first actuator, wherein an actuation of the first actuator permits the second actuator to move from a locked position to an unlocked position for the blade.

First claim

What is claimed is:

1. A utility knife, comprising:
a handle;
a blade carrier coupled to the handle, the blade carrier is releasably coupled to a utility knife blade by a blade retention mechanism;
the blade retention mechanism including:
a button; and
a slider with a body having a pair of projections extending outward and away from the body, the slider is received in a first opening of the blade carrier and movably coupled to the button, the slider is perpendicularly movable relative to a longitudinal length of the utility knife between a locked position, where the pair of projections engage with a pair of recesses in the blade carrier, and an unlocked position, where the slider protrudes outward and away from the blade carrier, wherein in the locked position the slider engages with the utility knife blade to securably retain the utility knife blade, wherein in the unlocked position the slider is disengaged from the utility knife blade to permit removal of the utility knife blade, and wherein during a movement of the slider from the locked position to the unlocked position, the slider moves away from the blade carrier; and

wherein an actuation of the button in a direction perpendicular or substantially perpendicular to a movement direction associated with the slider between the locked and unlocked positions enables the slider to move, together with the button, from the locked position to the unlocked position.

2. The utility knife claim 1 ,
wherein the slider includes a top portion and a bottom portion, the top portion and bottom portion defining a cavity, said projections extending outward and away from the body are arranged in the top portion;
wherein the button is at least partly received in the cavity during a movement of the slider from the locked to unlocked positions.

3. The utility knife of claim 1 , further comprising:
a first plate coupled to the blade carrier, the slider is sandwiched between the first plate and the button; and
a second plate coupled to the blade carrier;
wherein the first plate is positioned proximate the slider, and wherein a gap is defined between the first and second plates that is configured to selectively receive the utility knife blade.

4. The utility knife of claim 3 , wherein the first plate defines a pair of recesses, wherein the second plate defines a pair of recesses, wherein the slider includes a pair of projections, wherein the pair of projections are at least partly received by each of the pair of recesses defined by each of the first and second plates.

Assignees

• Fiskars Finland Oy Ab

Inventors

• Dechant Stephen P
• Stokes Steven

Classifications

• B26B5/00 Primary

  Hand knives with one or more detachable blades · CPC title

• B26B5/006 Primary

  specially adapted for using razor blades as blades (B26B5/001 takes precedence) · CPC title