Scissors and Manufacturing Method Therefor

Patent metadata

Field	Value
Publication number	US-2016368156-A1
Application number	US-201514740922-A
Country	US
Kind code	A1
Filing date	Jun 16, 2015
Priority date	Jun 16, 2015
Publication date	Dec 22, 2016
Grant date	—

Abstract

A pair of scissors comprises a pair of molded handle components which receive a blade and are joined at a pivot. One of the components has a thumb bow which forms a thumb opening and also defines a transition opening between the thumb opening and the pivot. The second component comprises a finger bow which forms a finger opening and also defines a transition opening between the finger bow and the pivot. The molded components are manufactured by injecting ABS or other molded material through an injection gate which is adjacent a reduced neck portion and a connecting strut which integrally connects the neck portion with the bow portion and partially defines a transition opening.

First claim

1 . A pair of scissors comprising:
a first scissor component comprising a first blade and a first handle connecting said first blade and having a first pivot and a thumb bow defining a thumb opening and a first transition opening disposed between said first pivot and said thumb opening; and a second scissor component comprising a second blade and a second handle connecting said second blade and having a second pivot and a finger bow defining a finger opening and a second transition opening between said second pivot and said finger opening, wherein said first and second scissor components are pivotally joined at said first and second pivots.

2 . The scissors of claim 1 wherein said first scissor component comprises a reduced neck portion and a pair of struts connecting said reduced neck portion with said thumb bow.

3 . The scissors of claim 1 wherein said second scissor component comprises a reduced neck portion and a pair of struts connecting said reduced neck portion to said finger bow.

4 . The scissors of claim 1 wherein said first transition opening has a quasi-triangular shape.

5 . The scissors of claim 1 wherein said second transition opening has a quasi-triangular shape.

6 . The scissors of claim 1 wherein said first handle and said second handle are molded components.

7 . The scissors of claim 6 wherein said molded components are formed from ABS material.

8 . The scissors of claim 1 wherein said first scissor component and said second scissor component in a pivotally closed position define an effective surface profile projection wherein said first and second transition openings and thumb and finger openings have an area greater than 30% of the effective surface profile projection of said first handle and said second handle.

9 . The scissors of claim 2 wherein said struts generally diverge at an acute angle from said reduced neck portion.

10 . A method for manufacturing a scissor handle component comprising:
providing a mold configured to form a thumb bow defining a thumb opening and an opposite pivot portion, said pivot portion transitioning to a reduced neck portion and configured to form a transition opening between said neck portion and said thumb bow; and injecting molding material into said mold at a location adjacent an intersection between said reduced neck portion and structure at least partially defining said transition opening to form a handle component.

11 . The method of claim 10 further comprising:
providing a second mold configured to form a finger bow defining a finger opening and an opposite pivot portion, said pivot portion transitioning to a reduced neck portion and configured to form a second transition opening between said reduced neck portion and said finger bow; and
injecting molding material into said second mold at a location adjacent an intersection between said reduced neck portion and structure at least partially defining said second transition opening to form a second handle component.

12 . The method of claim 10 wherein said molding material is ABS material.

13 . The method of claim 11 wherein said molding material is ABS material.

14 . A pair of scissors comprising:
a first scissor component comprising a first blade and a molded first handle connecting said first scissor and having a first pivot and a thumb bow defining a thumb opening and a quasi-triangular first transition opening disposed between said first pivot and said thumb opening, said first transition opening at least partially defined by a first pair of first struts integrally connecting said thumb bow; and a second scissor component comprising a second blade and a second handle connecting said second blade and having a second pivot and a finger bow defining a finger opening and a second quasi-triangular transition opening between said second pivot and said finger opening, said second transition opening at least partially defined by a second pair of first struts integrally connecting said finger bow, wherein said first and second scissor components are pivotally joined at said first and second pivots.

15 . The scissors of claim 14 wherein said first scissor component comprises a reduced neck portion and said first pair of struts integrally connect said reduced neck portion with said thumb bow.

16 . The scissors of claim 14 wherein said second scissor component comprises a second reduced neck portion and said second pair of struts integrally connect said second reduced neck portion to said finger bow.

17 . The scissors of claim 14 wherein said molded handles are formed from ABS material.

18 . The scissors of claim 14 wherein said first scissor component and said second scissor component in a pivotally closed position define an effective surface profile projection wherein said first and second transition openings and thumb and finger openings have an area greater than 30% of the effective surface profile projection of said first handle and said second handle.

19 . The scissors of claim 17 wherein said first pair of struts generally diverge at an acute angle from said reduced neck portion.

20 . The scissors of claim 16 wherein said second pair of struts generally diverge at an acute angle from said second reduced neck portion.

Assignees

• Acme United Corp

Inventors

• Albano Sarah A
• Tang Siu-Leung

Classifications

• B26B13/20 Primary

  with gripping bows in the handle · CPC title

• B26B13/28

  Joints (B25B7/06 takes precedence) · CPC title