Shearing tool with closure assist

Patent metadata

Field	Value
Publication number	US-12589512-B2
Application number	US-202318399075-A
Country	US
Kind code	B2
Filing date	Dec 28, 2023
Priority date	Dec 28, 2023
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

A shearing tool can be configured to provide closure assistance. The shearing tool can include a first portion and a second portion pivotably connected to each other. The first portion can include a handle portion and a working portion. The second portion can include a handle portion and a working portion. The shearing tool can include a contracting member operatively connected to the first portion and the second portion. When activated, the contracting member can contract such that shearing tool moves from an open configuration toward a closed configuration. As a result, assistance in closing the shearing tool can be provided by the contracting member.

First claim

What is claimed is:

1 . A shearing tool comprising:
a first portion including a handle portion and a working portion; a second portion including a handle portion and a working portion, the first portion and the second portion being pivotably connected to each other; and a shape memory material member operatively connected to the first portion and the second portion, when activated, the shape memory material member contracts such that shearing tool moves from an open configuration toward a closed configuration, whereby closure assistance is provided by the shape memory material member.

2 . The shearing tool of claim 1 , wherein the shape memory material member is a shape memory alloy wire.

3 . The shearing tool of claim 1 , wherein the shape memory material member is operatively connected to the handle portion of the first portion and the handle portion of the second portion.

4 . The shearing tool of claim 3 , wherein the shape memory material member extends in a non-linear pattern between the handle portion of the first portion and the handle portion of the second portion.

5 . The shearing tool of claim 1 , further including:
a power source operatively connected to supply energy to the shape memory material member; and one or more processors operatively connected to the power source, wherein the one or more processors are configured to selectively control a supply of energy to the shape memory material member.

6 . The shearing tool of claim 5 , further including a sensor, wherein the sensor is operatively connected to the one or more processors, and wherein the sensor is configured to acquire sensor data about the shearing tool.

7 . The shearing tool of claim 6 , wherein the one or more processors are configured to:
detect an activation condition; and responsive to detecting the activation condition, cause the shape memory material member to be activated.

8 . The shearing tool of claim 5 , further including an input interface configured to receive a user input, wherein the input interface is operatively connected to the one or more processors, and wherein the one or more processors are configured to:
responsive to receiving a user input on the input interface, cause the shape memory material member to be activated.

9 . The shearing tool of claim 1 , wherein at least a portion of the shape memory material member is insulated.

Assignees

• Toyota Eng & Mfg North America
• Toyota Motor Co Ltd

Inventors

• Zhu Yufei
• Pinkelman Brian J
• Rowe Michael Paul

Classifications

• B26B13/22

  combined with auxiliary implements, e.g. with cigar cutter, with manicure instrument (cigar cutters per se A24F13/24) · CPC title

• B26B13/16

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

• B26B15/00 Primary

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