---
publication_id: "OT-2026-000000332"
title: "Lifter assembly for a powered fastener driver"
published_at: "2026-09-15T19:02:45.534926Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000332"
categories:
  - "tools-tooling/fastening-tools"
keywords:
  - "b25c1/047"
  - "b25c1/06"
---

# Lifter assembly for a powered fastener driver

## Abstract

A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position toward a driven or bottom-dead-center (BDC) position for driving a fastener into a workpiece, a gas spring mechanism for driving the driver blade toward the BDC position, and a lifter assembly having a rotary lifter for returning the driver blade from the BDC position toward the TDC position. The powered fastener driver further includes an arm upon which the rotary lifter is supported, a motor which, in a first position of the rotary lifter, provides torque to the rotary lifter to return the driver blade from the BDC position toward the TDC position, and a brake mechanism including an electromagnet which, when activated, causes the rotary lifter to move from the first position toward a second position in which the rotary lifter is not engageable with the driver blade.