OPENTECHNICAL PUBLICATION
OT-2026-000003073

Hand-held jack

Published: 2026-09-15T19:17:09.640632Z
Permanent URL: https://opentechnical.org/p/OT-2026-000003073
Categories: Lifting, Positioning & Manipulation > Lift Tables and Positioners

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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.

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OpenTechnical publication OT-2026-000003073
Published 2026-09-15T19:17:09.640632Z
https://opentechnical.org/p/OT-2026-000003073