Shear wrench tool

Patent metadata

Field	Value
Publication number	US-11518007-B2
Application number	US-201916713246-A
Country	US
Kind code	B2
Filing date	Dec 13, 2019
Priority date	Dec 6, 2019
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A shear wrench tool including an electric motor having a motor output shaft, a transmission having a plurality of planetary gear stages and an output section having first and second output sleeves the first output sleeve being configured for mating with a nut and the second output sleeve being configured for mating with a tip of a bolt to be sheared, wherein the electric motor is configured to provide torque via the transmission to the output section for causing the first and second output sleeves to be rotated in opposite directions relative to each other in use, and wherein the electric motor, the transmission and the output section are arranged in an axial sequence one after the other such that the first and second output sleeves circumferentially extend coaxially around the same axis that the motor output shaft and the planetary gear stages rotate about.

First claim

The invention claimed is:

1. A shear wrench tool comprising an electric motor having a motor output shaft, a transmission having a plurality of planetary gear stages and an output section having first and second output sleeves the first output sleeve being shaped for mating with a nut and the second output sleeve being shaped for mating with a tip of a bolt to be sheared, wherein the electric motor is configured to provide torque via the transmission to the output section for causing the first and second output sleeves to be rotated in opposite directions relative to each other in use, and wherein the electric motor, the transmission and the output section are arranged in an axial sequence one after the other such that the first and second output sleeves circumferentially extend around a same axis as the motor output shaft and the planetary gear stages rotate about in use, thereby providing that the motor output shaft, the planetary gear stages and the first and second output sleeves are coaxial.

2. The shear wrench tool of claim 1 , having a handle located part way along an axial length of the tool between the motor and the output section such that a moment of force acting on the tool about the handle in a direction of the output section substantially balances a moment of force acting on the tool in the opposite direction.

3. The shear wrench tool of claim 2 , wherein a distal surface of the handle is provided with a battery receiving portion.

4. The shear wrench tool of claim 1 , wherein the transmission has at least five planetary gear stages provided in series.

Assignees

• Black & Decker Inc

Inventors

• Libera Philipp
• Gottschling Rafael
• Kunz Michael
• Oeffner Isabell
• Sell Stefan

Classifications

• B25B21/002 Primary

  for special purposes · CPC title

• B25B13/488 Primary

  for connections where two parts must be turned in opposite directions by one tool · CPC title

• B25B21/02

  with means for imparting impact to screwdriver blade or nut socket · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• B25B23/1415

  Break members; Arrangements specially adapted for break-bolts (break-bolts per se F16B31/00) · CPC title