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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-6295812-B1, on 2 October 2001. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003093

Hydraulic jack

Published
Permanent URL
Classification
Lifting, Positioning & Manipulation › Lift Tables and Positioners
Original source
US-6295812-B1, the United States Patent and Trademark Office, 2 October 2001
Document SHA-256
170dcbd75432508d3e4f239b3c578f8aa6cd7b4f56a6d7eba80dadbe6db64277

A hydraulic jack includes a moveable base seat. A lift arm, a handle and a hydraulic driver each mounted on the base seat. The hydraulic driver is driven by the handle to push the lift arm to lift an object. The hydraulic jack has a compound piston assembly and a hydraulic driver with fluid paths by which the jack can adjust the lift capacity so as to lift quickly and lower slowly.

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Abstract

A hydraulic jack includes a moveable base seat. A lift arm, a handle and a hydraulic driver each mounted on the base seat. The hydraulic driver is driven by the handle to push the lift arm to lift an object. The hydraulic jack has a compound piston assembly and a hydraulic driver with fluid paths by which the jack can adjust the lift capacity so as to lift quickly and lower slowly.

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Publication information

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Citation

OpenTechnical Publication OT-2026-000003093, “Hydraulic jack,” published September 15, 2026 at 19:27:31 UTC, https://opentechnical.org/p/OT-2026-000003093.

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Terms

This record reproduces a document published elsewhere and is provided for reference and study. Rights in the original remain with its owner. See the publication policy.