Safety stock carton knife tip assembly and method of making

• US 6,182,364 B1
• Filed: 09/01/1998
• Issued: 02/06/2001
• Est. Priority Date: 09/01/1998
• Status: Expired due to Fees

• Current Assignee: Thomas P. Reyburn
• Original Assignee: Thomas P. Reyburn
• Inventors: Reyburn, Thomas P.
• Primary Examiner(s): Gerrity, Stephen F.
• Assistant Examiner(s): Kim, Paul D.
• Application Number:
  US09/144,549
• Time in Patent Office: 889 Days
• Field of Search: 30/2, 302/86, 302/89, 302/94, 303/17, 30D/IG.8
• US Class Current: 30/2
• CPC Class Codes: B26B 27/005 Carton openers
• CPC Class Codes: B26B 5/00 Hand knives with one or more detachable blades
• CPC Class Codes: B67B 7/00 Hand- or power-operated devices for opening closed containers nail pullers or extractors B25C11/00; attached to, or incorporated in, containers or container closures B65D75/58, B65D77/30
• CPC Class Codes: Y10S 30/08 Seam rippers

Abstract

A stock carton knife including a handle and a blade projecting from the handle and having two lateral edges and an outer end. The blade has a lateral cutting notch in one of the lateral edges, the cutting notch having a laterally oriented mouth including an inner edge closer to the handle and an outer edge farther from the handle. The outer edge converges with the outer end to form a juncture. The juncture has a configuration which includes at least one lateral recess. The safety carton knife further includes a blunt knob bonded on the juncture by a bonding material which is in the least one recess, thereby securing the knob to the blade.

Claims

1. A safety carton knife comprising:

a handle;

a blade projecting from said handle, having two lateral edges and an outer end;

said blade having a lateral cutting notch in one of said lateral edges, said cutting notch having a laterally oriented mouth including an inner edge closer to said handle and an outer edge farther from said handle;

said outer edge converging with said outer end to form a juncture;

said juncture having a configuration which includes at least one lateral recess;

a blunt knob bonded on said juncture by a bonding material which is in said at least one recess, securing said knob to said blade.

2. The safety carton knife in claim 1 wherein said juncture has two recesses.

3. The safety carton knife of claim 2 wherein said knob is bonded onto said juncture with a thermosetting material.

4. The safety carton knife in claim 1 wherein said juncture has a narrow portion straddled by a pair of recesses.

5. The safety carton knife of claim 1 wherein said configuration has a two-dimensional generally hourglass shape.

6. The safety carton knife of claim 1 wherein said knob is bonded to said juncture by polymer material in said at least one recess.

7. The safety carton knife of claim 6 wherein said polymer material is a thermosetting polymer.

8. A safety carton knife comprising:

a handle;

a blade projecting from said handle, having two lateral edges and an outer end;

said blade having a lateral cutting notch in one of said lateral edges, said cutting notch having laterally oriented mouth including an inner edge closer to said handle and an outer edge farther from said handle;

said outer edge converging with said outer end to form a juncture;

said juncture having a configuration which includes a narrow portion straddled by a pair of recesses;

a blunt knob molded onto said juncture and into said recesses.

9. The safety carton knife in claim 8 wherein said knob is of polymer, metal or ceramic.

10. A safety carton knife comprising:

a handle;

a blade projecting from said handle, having two lateral edges and an outer end;

said blade having a lateral cutting notch in one of said lateral edges, said cutting notch having a laterally oriented mouth including an inner edge closer to said handle and an outer edge farther from said handle;

said outer edge converging with said outer end to form a juncture;

said juncture having a configuration which includes at least one lateral recess;

a blunt knob having a slot therein, said slot receiving said juncture to cause said knob to be fitted onto said juncture; and

a bonding material in said slot and recess, securing said knob to said blade.

11. The safety carton knife in claim 10 wherein said juncture has two recesses.

12. The safety carton knife of claim 11 wherein said knob is bonded onto said juncture with a thermosetting material.

13. The safety carton knife in claim 10 wherein said configuration has a two-dimensional hourglass shape.

14. The safety carton knife of claim 10 wherein said knob is bonded to said juncture by polymer material in said at least one recess.

15. The safety carton knife of claim 14 wherein said polymer material is a thermosetting polymer.