---
publication_id: "OT-2026-000001377"
title: "Impact wrench"
published_at: "2026-09-15T19:05:28.079638Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000001377"
categories:
  - "tools-tooling/clamping-tools"
keywords:
  - "b25b21/02"
  - "b25b21/02"
  - "b25b21/02"
  - "b25b21/02"
  - "b25b23/147"
  - "b25b23/1475"
---

# Impact wrench

## Abstract

An impact wrench ( 1 ) with an upper handle assembly ( 2 ), a lower working assembly ( 3 ) and an intermediate connecting bar ( 4 ) connected between the handle assembly ( 2 ) and the working assembly ( 3 ) and comprising a tubular body ( 4 ′) with a first end portion ( 15 ) ( coupled with a first coupling seat ( 16 ) of the handle assembly ( 2 ) and a second end portion ( 17 ) coupled with a second coupling seat ( 18 ) of the working assembly ( 3 ), wherein the first end portion ( 15 ) and the first coupling seat ( 16 ) both have a non-circular or polygonal or rectangular or square cross-section, orthogonal to the longitudinal direction ( 14 ), so as to make an anti-rotation shape coupling with the interposition of a first damping assembly ( 24 ) forming a damping layer between the first end portion ( 15 ) and the first coupling seat ( 16 ).