Utility knife with dual blades

Patent metadata

Field	Value
Publication number	US-10994430-B2
Application number	US-201616335479-A
Country	US
Kind code	B2
Filing date	Sep 23, 2016
Priority date	Sep 23, 2016
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

The present utility model discloses a utility knife with dual blades, comprising a housing having an opening at both ends, a blade carrier which is mounted and is movable within the housing, a movement assembly connected to the blade carrier for driving the blade carrier to respectively move in a direction towards both ends of the housing, wherein it further comprises a stop member. The blade carrier is provided with an abutment portion thereon, and the stop member has a stop portion being able to change its position with respect to the abutment portion, so that the blade carrier can move in a single direction so as to prevent the blade carrier from accidentally sliding and pushing the blade out to injure a user.

First claim

The invention claimed is:

1. A utility knife with dual blades, comprising:
a housing having a first end and a second end,
a blade carrier for carrying the dual blades at both ends thereof, respectively, which is mounted within the housing so that the dual blades can extend from either of the first end and the second end of the housing, respectively; and
a movable member connected to the housing and being configured to be translated or rotated with respect to the housing, and being movable to one of the first end and the second end which none of the blades extends from so as to block corresponding one of the blades from extending out from the one of the first end and the second end;
wherein one end of the movable member is connected to an intermediate portion of the housing via a shaft so that the movable member is rotatable about the shaft so as to be movable to the first end or the second end of the housing;
wherein the movable member further comprises a through hole located in the movable member, a button capable of passing though the through hole, and an elastic member connected to the button.

2. The utility knife with dual blades as claimed in claim 1 , wherein the housing has a button hole in a position corresponding to the button thereon, for accommodating the button on the movable member.

3. The utility knife with dual blades as claimed in claim 2 , wherein when the blade carrier is in an intermediate position of the housing, a groove is provided in a position corresponding to the button hole on the blade carrier, the groove being engaged with the button and the elastic member; and only when the blade carrier is in the intermediate position of the housing, the elastic member can be engaged with the groove through the button hole so that the elastic member can be compressed within the groove.

4. The utility knife with dual blades as claimed in claim 1 , further comprising a rotating member located between the housing and the blade carrier, which is connected to the movable member via a shaft, and is rotatable along with the rotation of the movable member, the rotating member has a blocking portion located on one side portion of the rotating member, and the blocking portion is rotated on the rotating member to the side adjacent to the movable member when the movable member rotates to one of the first end and the second end of the housing, so as to block the blade carrier from moving towards the one of the first end and the second end at which the movable member is located.

5. The utility knife with dual blades as claimed in claim 4 , wherein a forwardly projecting boss is provided on an intermediate portion of the blade carrier, and the blocking portion is located on the side of the boss adjacent to the movable member when the movable member rotates to the one of the first end and the second end of the housing so that the blocking portion can block the boss on the blade carrier from moving towards the one of the first end and the second end at which the movable member is located.

6. The utility knife with dual blades as claimed in claim 1 , wherein a structural body and a pin are provided at a rear portion of the movable member, wherein the structural body has a pin hole in the center thereof, and the pin is connected to the movable member through the pin hole.

7. The utility knife with dual blades as claimed in claim 6 , wherein the structural body is connected to an elastic structure which is fixedly connected to or integrally extends with an intermediate portion of the structural body, wherein the elastic structure comprises two fins which respectively extend towards both sides of the elastic structure from an intermediate portion of the elastic structure and project inwardly at a respective end of each of the two fins.

8. The utility knife with dual blades as claimed in claim 1 , wherein the movable member comprises a first movable member and a second movable member each located on a respective side of the housing, wherein the first movable member is connected to an upper housing located on an upper side of the housing via a first shaft, and the second movable member is connected to a lower housing located on a lower side of the housing via a second shaft, wherein the first shaft and the second shaft can be two portions of an integral shaft or can be two co-axial shafts.

9. The utility knife with dual blades as claimed in claim 8 , wherein the first movable member comprises a first through and a first button, and the second movable member comprises a second through hole and a second button, wherein the first button is located in the first through hole and the second button is located in the second through hole, wherein the first button and the second button are connected via an elastic body or are integrally formed with the elastic body.

10. The utility knife with dual blades as claimed in claim 9 , further comprising an element connected to the movable member via a shaft and rotatable along with the rotation of the movable member, the element has a boss located on a side portion of the element, and the blade carrier is moved towards the second end of the housing when the movable member rotates to the first end of the housing, the blade carrier has a rib thereon, at which time the boss is blocked by the rib and the movable member cannot rotate.

Assignees

• Hangzhou Great Star Ind Co Ltd
• Hangzhou Great Star Tools Co Ltd

Inventors

• Wang Weiyi

Classifications

• B26B29/02 Primary

  Guards or sheaths for knives · CPC title

• B26B1/10

  Handles · CPC title

• B26B5/001

  with blades being slid out of handle immediately prior to use · CPC title

• B26B5/003 Primary

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