Metal snips

Patent metadata

Field	Value
Publication number	US-11235399-B2
Application number	US-201615245003-A
Country	US
Kind code	B2
Filing date	Aug 23, 2016
Priority date	Aug 23, 2016
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

Hand tools which have an ergonomic using a palm handle and finger handle designs which achieve mechanical efficiency and ease of use. The ergonomic handle is compatible with the muscle movements of an operator using a hand tool reducing muscle strain and pain. Optionally, the palm and finger handles can have ergonomically designed cushions. In an embodiment, the finger handle can have a finger set which has a forward finger flange, a tail finger flange and a pinky grip. The ergonomic handle can also use a relief washer system to achieve a smooth low frictional resistance cutting stroke.

First claim

We claim:

1. A handle for a metal snips hand tool, comprising:
a palm handle for the metal snips hand tool pivotally connected to a finger handle;
said palm handle adapted to pivotally connect to at least a first portion of a nosepiece of the hand tool;
said palm handle having an extended palm grip purlicue width that is greater than a palm handle narrow width;
said palm handle having a purlicue base having a purlicue base height in a range of about 14 mm to about 21 mm;
said palm handle having a purlicue curve radius in a range of 7.5 mm to 35 mm;
said finger handle having an extended finger grip configured to receive a grip of an index finger of an operator and a finger set having a finger trough configured to receive a grip of a middle finger of an operator, said finger trough configured between a forward finger flange and a tail finger flange;
said forward finger flange having a concave portion between the extended finger grip and a forward finger flange peak, such that the forward finger flange extends between the index finger and the middle finger of the operator when the grip of the middle finger of the operator is received in the finger trough;
said finger trough having a trough base height in a range of about 19 mm to about 28 mm;
said finger handle adapted to pivotally connect to at least a second portion of said nosepiece; and
said handle having closed state and an open state.

2. The handle for a metal snips hand tool according to claim 1 , wherein said tail finger flange has a tail finger flange peak, and said forward finger flange peak is configured at a finger set width from said tail finger flange peak.

3. The handle for a metal snips hand tool according to claim 1 , wherein said forward finger flange has a forward finger flange height and said tail finger flange has a tail finger flange height different from said forward finger flange height.

4. The handle for a metal snips hand tool according to claim 1 , wherein said forward finger flange has a forward finger flange height and said tail finger flange has a tail finger flange height which is the same as said forward finger flange height.

5. The handle for a metal snips hand tool according to claim 1 , further comprising:
a purlicue grip having a purlicue peak, wherein said finger set is configured such that the purlicue peak has a purlicue peak projection between said forward finger flange and said tail finger flange when the handle is in a closed state and when said handle is in an open state.

6. The handle for a metal snips hand tool according to claim 1 , wherein the extended finger grip, the forward finger flange, and the tail finger flange are overmolded over a finger handle frame.

7. The handle for a metal snips hand tool according to claim 1 , wherein the nosepiece has a front blade portion pivotally connected to a back blade portion by a blade pivot, and
wherein the blade pivot passes through at least a relief washer opening and an adjacent blade washer opening.

8. The handle for a metal snips hand tool according to claim 1 , wherein the nosepiece has a first cutting member having said first portion pivotally connected to said palm handle, and
wherein the nosepiece has a second cutting member having said second portion pivotally connected to said finger handle.

9. The handle for a metal snips hand tool according to claim 1 , wherein said purlicue base height is in a range of 13.76 mm to 20.64 mm.

10. The handle for a metal snips hand tool according to claim 1 , wherein said trough base height is in a range of 18.72 mm to 28.08 mm.

11. The handle for a metal snips hand tool according to claim 1 , wherein said extended finger grip has an extended finger grip base height in a range of about 20 mm to about 29 mm.

12. The handle for a metal snips hand tool according to claim 1 , wherein said palm handle having an extended palm grip purlicue width that is greater than a palm handle narrow width.

13. The handle for a metal snips hand tool according to claim wherein said palm handle having a purlicue curve radius in a range of 7.5 mm to 35 mm.

14. The handle for a metal snips hand tool according to claim 1 , wherein said finger handle having a forward finger flange width that is greater than a tail finger flange width.

15. The handle for a metal snips hand tool according to claim 1 , wherein said forward finger flange having an extended finger flange radius in a range of 6 mm to 20 mm.

16. The handle for a metal snips hand tool according to claim 1 , wherein said extended palm grip purlicue width is in a range of about 10 mm to about 45 mm.

17. The handle for a metal snips hand tool according to claim 1 , wherein said extended palm grip purlicue width is in a range of about 10 mm to about 45 mm and the palm grip has a palm grip width reduction in a range of about 1 mm to about 40 mm.

18. The handle for a metal snips hand tool according to claim 1 , wherein said palm handle further comprises a partial torus surface.

19. The handle for a metal snips hand tool according to claim 1 , wherein said purlicue curve radius is about 14 mm.

20. The handle for a metal snips hand tool according to claim 1 , wherein said extended finger flange radius is in a range of about 12 mm to about 40 mm.

21. The handle for a metal snips hand tool according to claim further comprising an extended finger flange diameter in a range of 12 mm to 40 mm.

22. A handle for a metal snips hand tool, comprising:
a palm handle for the metal snips hand tool pivotally connected to a finger handle;
said palm handle adapted to pivotally connect to at least a first portion of a nosepiece of the hand tool;
said finger handle having an extended finger grip configured to receive a grip of an index finger of an operator and a finger set having a finger trough configured to receive a grip of a middle finger of an operator, said finger trough configured between a forward finger flange and a tail finger flange;
said finger handle having a forward finger flange width that is greater than a finger flange width;
said extended finger grip having an extended finger grip base height in a range of about 20 mm to about 29 mm;
said forward finger flange having an extended finger flange radius in a range of 6 mm to 20 mm;
said forward finger flange having a concave portion between the extended finger grip and a forward finger flange peak, such that the forward finger flange extends between the index finger and the middle finger of the operator when the grip of the middle finger of the operator is received in the finger trough;
said finger handle adapted to pivotally connect to at least a second portion of said nosepiece; and
said handle having closed state and an open state.

23. The handle for a metal snips hand tool according to claim 22 , wherein said purlicue base height is in a range of 13.76 mm to 20.64 mm.

24. The handle for a metal snips hand tool according to claim 22 , wherein said extended finger grip base height is in a range of 19.6 mm to 29.4 mm.

25. The handle for a metal snips hand tool according to claim 22 , wherein said finger trough has a trough base height in a range of about 19 mm to 28 mm.

26. A handle for a hand tool, comprising:
a palm handle pivotally connected to a finger handle;
said palm handle adapted to pivotally connect to at least a first portion of a nosepiece of the hand tool;
said palm handle having a partial torus shape and a

Assignees

• Stanley Black & Decker Inc

Inventors

• Caglar Tolga
• Pelletier Thomas A
• Costello Kevin

Classifications

• B26B13/16 Primary

  spring loaded, e.g. with provision for locking the blades or the handles · CPC title

• B25G3/34

  by pressing the handle on the implements; using cement or molten metal, e.g. casting, moulding, by welding or the like · CPC title

• B25G1/102

  the shape being specially adapted to facilitate handling or improve grip · CPC title

• B25G3/26

  comprising nails, screws, bolts, or pins traversing or entering the socket · CPC title

• B26B13/12

  characterised by the shape of the handles · CPC title