---
publication_id: "OT-2026-000001301"
title: "Linear actuators with anti-backdrive mechanisms"
published_at: "2026-09-15T19:04:47.387319Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000001301"
categories:
  - "industrial-motion-power-transmission/rotary-motion"
keywords:
  - "f16h25/2015"
  - "f16h25/2454"
  - "f16h25/2454"
  - "f16b21/186"
  - "f16h2025/2075"
  - "f16h25/2021"
---

# Linear actuators with anti-backdrive mechanisms

## Abstract

An electric linear actuator comprises a housing extending along an axis, a spindle in the housing and extending along the axis, a motor coupled to and configured to rotate the spindle, and a rod coaxially coupled to the spindle and axially movable with respect to the housing in response to rotation of the spindle, the rod comprising a groove. A resilient member is configured to be received in the groove to prevent back-drive of the motor when the rod is subject to a load.