Utility knife

Patent metadata

Field	Value
Publication number	US-10144139-B2
Application number	US-201615083698-A
Country	US
Kind code	B2
Filing date	Mar 29, 2016
Priority date	Apr 2, 2015
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A utility knife including a handle, a blade, a first blade holder, and a spare blade holder. The spare blade holder is pivotal with respect to the handle between an open position where the recess is exposed to allow a spare blade to be removed from the spare blade holder and a closed position where the recess is within a slot of the handle to inhibit removal of the spare blade from the spare blade holder. The spare blade holder further including a cam surface and the cam surface of the spare blade holder engages a cam surface of the handle when the spare blade holder is in the closed position to urge the spare blade holder in a direction from a first longitudinal side of the handle toward a second longitudinal side of the handle to allow the first blade holder to pivot between extended and folded positions.

First claim

What is claimed is:

1. A utility knife comprising:
a handle that includes a first longitudinal side, a second longitudinal side opposite the first longitudinal side, a top side, a bottom side, and a slot that extends through the bottom side, the slot between the first and second longitudinal sides, the handle further including a cam surface;
a blade;
a first blade holder, the blade removably coupled to the first blade holder, the first blade holder pivotal with respect to the handle between an extended position where the blade is exposed and configured to cut a work-piece and a folded position where the blade is within the slot of the handle; and
a spare blade holder including a recess configured to receive a spare blade, the spare blade holder pivotal with respect to the handle between an open position where the recess is exposed to allow the spare blade to be removed from the spare blade holder and a closed position where the recess is within the slot of the handle to inhibit removal of the spare blade from the spare blade holder, the spare blade holder further including a cam surface,
wherein the cam surface of the spare blade holder engages the cam surface of the handle when the spare blade holder is in the closed position to urge the spare blade holder in a direction from the first longitudinal side of the handle toward the second longitudinal side of the handle to allow the first blade holder to pivot between the extended and folded positions.

2. The utility knife of claim 1 , wherein the spare blade holder includes a front end and a back end opposite the front end, wherein the spare blade holder is pivotally coupled to the handle adjacent the back end of the spare blade holder, and wherein the cam surface of the spare blade holder is located at the front end of the spare blade holder.

3. The utility knife of claim 1 , wherein the handle further includes a front end portion and a back end portion opposite the front end portion, and wherein the first blade holder is pivotally coupled to the handle adjacent the front end portion and the spare blade holder is pivotally coupled to the handle adjacent the back end portion.

4. The utility knife of claim 3 , wherein the spare blade holder pivots through the slot and past the bottom side of the handle to pivot from the closed position to the open position.

5. The utility knife of claim 1 , wherein the first blade holder includes an enlarged portion that inhibits the spare blade holder from moving to the open position when the first blade holder is in the folded position.

6. The utility knife of claim 5 , wherein the first blade holder includes a top edge and a bottom edge, wherein the bottom edge is received within the slot when the first blade holder is in the folded position and the top edge is at least partially located outside of the slot when the first bladed holder is in the folded position, and wherein the enlarged portion extends from the top edge.

7. The utility knife of claim 1 , wherein the first blade holder is positioned adjacent the first longitudinal side of the handle when in the folded position, and wherein the spare blade holder is positioned adjacent the second longitudinal side of the handle when in the closed position.

8. The utility knife of claim 1 , wherein the cam surface of the spare blade holder engages the cam surface of the handle when the spare blade holder is in the closed position to urge the spare blade holder in a direction away from the first blade holder.

9. The utility knife of claim 1 , wherein the recess of the spare blade holder is configured to receive at least four spare blades.

10. The utility knife of claim 1 , further comprising a ball engageable with the spare blade holder when the spare blade holder is in the closed position to retain the spare blade holder in the closed position.

11. The utility knife of claim 1 , wherein the cam surface of the spare blade holder extends at an oblique angle relative to the second longitudinal side.

12. The utility knife of claim 1 , wherein the cam surface of the spare blade holder defines an angle with an axis extending perpendicular to the second longitudinal side, and wherein the angle is between about 5 degrees and about 30 degrees.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Squiers Grant T
• Hyma Steven W
• Hoppe Christopher S
• Stearns Michael
• Debaker Joseph M

Classifications

• B26B5/00

  Hand knives with one or more detachable blades · CPC title

• B26B1/10

  Handles · CPC title

• B26B1/04 Primary

  lockable in adjusted position · CPC title

• B26B1/02 Primary

  with pivoted blade · CPC title

• B26B5/003 Primary

  comprising retraction means for the blade or the blade holder · CPC title