---
publication_id: "OT-2026-000003073"
title: "Hand-held jack"
published_at: "2026-09-15T19:17:09.640632Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000003073"
categories:
  - "lifting-positioning-manipulation/lift-tables-and-positioners"
keywords:
  - "b66f1/02"
  - "b66f1/02"
  - "b66f1/02"
  - "b25b5/06"
  - "b25b5/068"
  - "b25b5/068"
---

# Hand-held jack

## Abstract

A hand-held jack has a main body, including a frame on a grip, the frame having a shaft hole passing through a first chamber and a second chamber therein, a jacking member being fixed to a front end of the frame; and a slow-down device. The slow-down device includes a swing seat pushed by the first spring and mounted in the second chamber; at least one shaft clamp and at least one restricting plate urged by a third spring that are disposed in a first accommodating groove and a second accommodating groove of the swing seat for clamping a lift shaft; and an eccentric push member having an eccentric portion resting on the restricting plate and a push portion. When a workpiece is lifted by the hand-held jack, the slow-down device lowers the workpiece slowly.