OPENTECHNICAL PUBLICATION
OT-2026-000001464

Variable hydraulic pressure relief systems and methods for a material handling device

Published: 2026-09-15T19:05:59.925334Z
Permanent URL: https://opentechnical.org/p/OT-2026-000001464
Categories: Lifting, Positioning & Manipulation > Lift Tables and Positioners

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ABSTRACT

The present invention relates generally to hydraulic lift systems and, more
specifically, to hydraulic pressure relief systems and methods on material
handling vehicles. The hydraulic control system includes a pump having a pump
outlet in fluid communication with a supply passage, a reservoir in fluid
communication with a return passage, one or more hydraulic actuators
configured to raise and lower a fork assembly attached to a mast of the
material handling vehicle, a variable pressure relief valve configured to
selectively provide fluid communication from the supply passage to the
reservoir, and a controller in communication with the variable pressure relief
valve and a pressure sensor configured to measure a pressure in the supply
passage.

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OpenTechnical publication OT-2026-000001464
Published 2026-09-15T19:05:59.925334Z
https://opentechnical.org/p/OT-2026-000001464