Hydraulic tool

Patent metadata

Field	Value
Publication number	US-12365039-B2
Application number	US-202117463251-A
Country	US
Kind code	B2
Filing date	Aug 31, 2021
Priority date	Aug 31, 2018
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

An example shearing head includes a first member and a second member being rotatable about a pin. The first member has a shearing surface forming a substantially right angle with a first lateral surface of the first member. The second member has a shearing surface forming a substantially right angle with a second lateral surface of the second member. The second member includes a first distal surface and a second distal surface forming a substantially right angle. The first distal surface and the second distal surface are substantially perpendicular to the second lateral surface. The second member includes a third lateral surface opposing the second lateral surface and a retainer is attached to the second member. A first surface of the retainer contacts the first distal surface, a second surface of the retainer contacts the second distal surface, and the third lateral surface contacts a third surface of the retainer.

First claim

The invention claimed is:

1. A shearing head comprising:
a first jaw rotatable about a pivot axis and including a first shearing member, the first shearing member having a first shearing surface and a first lateral surface, the first shearing surface forming a right angle with the first lateral surface;
a second jaw rotatable about the pivot axis and including a second shearing member, the second shearing member having a second lateral surface, a second shearing surface, a first distal surface, and a second distal surface, the second distal surface facing the first shearing surface, and the second shearing surface forming a right angle with the second lateral surface; and
a blade retainer attached to the second jaw, the blade retainer in contact with the first distal surface, the second distal surface, and an outer lateral surface of the second jaw, the blade retainer resisting movement of the first jaw that is transverse to a shearing plane during a cutting action and the blade retainer distributing an impact force applied to the blade retainer to the first distal surface and the second distal surface of the second jaw so that the impact force is compressively absorbed by the first distal surface and the second distal surface of the second jaw.

2. The shearing head of claim 1 , wherein the first distal surface is perpendicular to the second distal surface.

3. The shearing head of claim 2 , wherein the outer lateral surface is perpendicular to the second distal surface.

4. The shearing head of claim 3 , wherein the blade retainer includes a first lateral leg in contact with the outer lateral surface of the second jaw and a second lateral leg that contacts an outer lateral surface of the first jaw.

5. The shearing head of claim 4 , wherein the first lateral leg and the second lateral leg define a channel through the blade retainer.

6. The shearing head of claim 1 , wherein the blade retainer includes:
a first surface in contact with the first distal surface of the second jaw;
a second surface in contact with the second distal surface of the second jaw; and
a third surface in contact with the outer lateral surface of the second jaw,
wherein the first surface, the second surface, and the third surface of the blade retainer are orthogonal.

7. The shearing head of claim 6 , wherein movement of the first shearing surface toward the second shearing surface is configured to shear a work piece into two pieces.

8. The shearing head of claim 1 , wherein the first jaw and the second jaw are rotatable about the pivot axis between an open position and a closed position, and
wherein the first jaw contacts the blade retainer before the closed position.

9. The shearing head of claim 1 , wherein the blade retainer extends beyond the second jaw in a direction parallel to the first distal surface of the second jaw and in a direction parallel to the second distal surface of the second jaw.

10. A shearing head for a hydraulic power tool, the shearing head comprising:
a first jaw having a first cam surface and rotatable about a pivot axis and including a first shearing member, the first shearing member having a first shearing surface and a first lateral surface, the first shearing surface forming a right angle with the first lateral surface;
a second jaw having a second cam surface and rotatable about the pivot axis and including a second shearing member, the second shearing member having a second lateral surface, a second shearing surface, a first distal surface, and a vertical distal surface, the vertical distal surface facing the first shearing surface, and the second shearing surface forming a right angle with the second lateral surface;
an extension spring secured to the first jaw and the second jaw, the extension spring resisting separation of the first cam surface and the second cam surface, the extension spring resisting movement of the first shearing surface toward the second shearing surface; and
a blade retainer attached to the second jaw, the blade retainer resisting movement of the first jaw or the second jaw that is transverse to a shearing blade during a shearing action, the blade retainer including:
a first surface in contact with the vertical distal surface of the second shearing member, and
a second surface in contact with the second lateral surface of the second jaw.

11. The shearing head of claim 10 , wherein the blade retainer includes a third surface that contacts the lateral surface of the first jaw.

12. The shearing head of claim 11 , wherein the blade retainer includes a fourth surface in contact with the first distal surface of the second jaw, the first distal surface perpendicular to the vertical distal surface.

13. The shearing head of claim 12 , wherein the blade retainer defines a channel and each of the first surface, the second surface, the third surface, and the fourth surface of the blade retainer are disposed within the channel; and
wherein the channel extends past the vertical distal surface of the second jaw in a direction parallel to the first distal surface.

14. The shearing head of claim 10 , wherein the first jaw engages the blade retainer before the first jaw and the second jaw being positioned to both exert force upon a work piece between the first jaw and the second jaw.

15. The shearing head of claim 10 , wherein the second lateral surface of the second jaw includes a first fastener hole and the blade retainer includes a second fastener hole extending through the second surface, and
wherein the first fastener hole and the second fastener hole are aligned to receive a fastener to secure the blade retainer to the second jaw.

16. The shearing head of claim 10 , wherein the blade retainer is formed from metal.

17. A method of using a shearing head, the method comprising:
placing a work piece in a shearing zone between a first jaw and a second jaw of the shearing head;
rotating, along a single pivot axis, the first jaw toward the second jaw to extend an extension spring arranged to bias the first jaw and the second jaw toward an open position;
engaging the first jaw with a blade retainer secured to the second jaw, the blade retainer in contact with a lateral surface, a first distal surface, and a second distal surface of the second jaw, the second distal surface facing the shearing zone; and
shearing the work piece into two pieces.

18. The method of claim 17 , wherein engaging the first jaw with the blade retainer includes the blade retainer receiving the first jaw within a channel, the channel including a first surface, a second surface, and a third surface in contact with the second jaw, the blade retainer configured to resist movement of the first jaw or the second jaw that is transverse to a shearing blade during.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• D'Antuono Marc

Classifications

• B23D35/002

  Means for mounting the cutting members · CPC title

• B23D27/04

  actuated by electric power · CPC title

• B25F5/021

  with guiding devices (guiding devices for hand tools on stands or supports B25H1/0078) · CPC title

• B23D35/005

  Adjusting the position of the cutting members · CPC title

• B23D35/001

  cutting members · CPC title