Tool heads for shearing operations

Patent metadata

Field	Value
Publication number	US-11034036-B2
Application number	US-201916592941-A
Country	US
Kind code	B2
Filing date	Oct 4, 2019
Priority date	Nov 29, 2018
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

Shear tools are described that are driven by a power assembly. In one version, the shear tools include a pivotally movable pair of lever arms. Upon activation of the power tool, the lever arms of the shear tool are pivotally displaced and urge a die along a shearing plane relative to another stationary die retained by the shear tool. In another version, the shear tools include a carriage and link assembly. Upon engagement and activation with a power assembly or power tool, a movable die is urged past a stationary die. Also described are systems and related methods utilizing the shear tools which enable convenient shearing or severing of workpieces such as strut channel.

First claim

What is claimed is:

1. A shear tool adapted to be driven by a power assembly, the shear tool comprising:
a frame defining a first face, a second face oppositely directed from the first face, and an interior region, the interior region accessible from at least one of the first face and the second face, the frame including a distal end wall;
a pair of pivotally movable lever arms affixed to the frame, each lever arm defining a proximal region for contacting an actuation member of the power assembly and a distal end directed to the interior region defined by the frame;
wherein the interior region of the frame is sized to receive a first die positioned in the interior region and allow linear movement of the first die upon contact with the distal ends of the pair of lever arms;
provisions for retaining a second die to the frame.

2. The shear tool of claim 1 further comprising:
a first die and a second die, wherein each of the first die and the second die defines a profile sized and shaped to receive a strut channel inserted therein.

3. The shear tool of claim 2 wherein the second die is retained with the frame and the first die is positioned in the interior region of the frame.

4. The shear tool of claim 3 wherein the first die is movable within the interior region of the frame.

5. The shear tool of claim 1 further comprising:
an arm bracket assembly affixed to the frame, the arm bracket assembly for supporting strut channel inserted in the interior region defined by the frame.

6. The shear tool of claim 1 wherein each lever arm of the pair of lever arms includes a cam surface in the proximal region for contacting the actuation member of the power tool.

7. The shear tool of claim 1 wherein the frame includes a first frame component defining a first portion of the interior region and a second frame component defining a second portion of the interior region, the first portion of the interior region sized and shaped to allow linear movement of the first die and the second portion of the interior region sized and shaped to retain the second die in a stationary position relative to the frame.

8. The shear tool of claim 1 wherein the shear tool is detachable from the power assembly, the frame including provisions for detachable engagement with the power assembly.

9. The shear tool of claim 8 wherein the provisions for detachable engagement with the power assembly include a sleeve extending along an axis about which the pair of lever arms are pivotally movable, the sleeve sized and shaped to receive a bolt to connect the shear tool to the power assembly.

10. The shear tool of claim 1 wherein the shear tool is non-detachable from the power assembly.

11. A tool system comprising:
a power assembly including a body, a handle, and a motor;
a shear tool including a frame defining a first face, a second face oppositely directed from the first face, and an interior region, the interior region accessible from at least one of the first face and the second face, the frame including a distal end wall, and the shear tool further including a pair of pivotally movable lever arms affixed to the frame, each lever arm defining a proximal region for contacting an actuation member of the power assembly and a distal end directed to the interior region defined by the frame, wherein the interior region of the frame is sized to receive a first die positioned in the interior region and allow linear movement of the first die upon contact with the distal ends of the pair of lever arms, and provisions for retaining a second die to the frame.

12. The tool system of claim 11 further comprising:
a first die and a second die, wherein each of the first die and the second die defines a profile sized and shaped to receive a strut channel inserted therein.

13. The tool system of claim 12 wherein the second die is retained with the frame and the first die is positioned in the interior region of the frame.

14. The tool system of claim 13 wherein the first die is movable within the interior region of the frame.

15. The tool system of claim 11 further comprising:
an arm bracket assembly affixed to the frame, the arm bracket assembly for supporting strut channel inserted in the interior region defined by the frame.

16. The tool system of claim 11 wherein each lever arm of the pair of lever arms includes a cam surface in the proximal region for contacting the actuation member of the power tool.

17. The tool system of claim 11 wherein the frame includes a first frame component defining a first portion of the interior region and a second frame component defining a second portion of the interior region, the first portion of the interior region sized and shaped to allow linear movement of the first die and the second portion of the interior region sized and shaped to retain the second die in a stationary position relative to the frame.

18. The tool system of claim 11 wherein the pair of lever arms is a first pair of lever arms, the tool system further comprising:
a second pair of lever arms interchangeable with the first pair of lever arms.

19. The tool system of claim 18 wherein the first pair of lever arms includes a first cam surface and the second pair of lever arms includes a second cam surface, the first cam surface exhibiting a different cam profile than the second cam surface.

20. The tool system of claim 11 wherein the power assembly further includes a battery or power pack.

21. The tool system of claim 11 wherein the shear tool is detachable from the power assembly, the frame including provisions for detachable engagement with the power assembly.

22. The tool system of claim 21 wherein the provisions for detachable engagement with the power assembly include a sleeve extending along an axis about which the pair of lever arms are pivotally movable, the sleeve sized and shaped to receive a bolt to connect the shear tool to the power assembly.

23. The tool system of claim 11 wherein the shear tool is non-detachable from the power assembly.

24. A shear tool adapted to be driven by a power assembly, the shear tool comprising:
a frame defining a first face, a second face oppositely directed from the first face, and an interior region, the interior region accessible from at least one of the first face and the second face;
a pair of pivotally movable lever arms affixed to the frame, each lever arm defining a proximal region for contacting an actuation member of the power assembly and a distal end directed to the interior region defined by the frame, each lever arm of the pair of lever arms includes a cam surface in the proximal region for contacting the actuation member of the power assembly;
wherein the interior region of the frame is sized to receive a first die positioned in the interior region and allow linear movement of the first die upon contact with the distal ends of the pair of lever arms;
provisions for retaining a second die to the frame.

25. The shear tool of claim 24 further comprising:
a first die and a second die, wherein each of the first die and the second die defines a profile sized and shaped to receive a strut channel inserted therein.

26. The shear tool of claim 25 wherein the second die is retained with the frame and the first die is positioned in the interior region of the frame.

27. The shear tool of claim 26 wherein the first die is movable within the interior region

Assignees

• Ridge Tool Co

Inventors

• Kundracik Richard M
• Bertram Matthew
• Foreman Evan T
• Baracskai Robert M
• Dakare Sachin

Classifications

• B26B15/00 Primary

  Hand-held shears with motor-driven blades · CPC title

• Y10T83/412

  Rectilinear relative movement only · CPC title

• B23D29/00 Primary

  Hand-held metal-shearing or metal-cutting devices (with nibbling action B23D27/02; hand-operated devices for metal-cutting otherwise than by shearing B26B) · CPC title

• B25F5/00

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• Y10T83/404

  By means to misalign aligned apertured tools · CPC title