Hydraulic serial rephasing circuits
AssigneeLippert Components, Inc.
InventorsRobert L. TIEDGE, Mark KINDER
Life of this patent
Estimating the term…
Abstract
A hydraulic circuit includes a hydraulic power unit, a first cylinder pair coupled with the hydraulic power unit, and a second cylinder pair coupled with the hydraulic power unit in parallel with the first cylinder pair. Re-phasing valves coupled with each cylinder of the first and second cylinder pairs are activated when a respective one of the cylinders reaches one of a fully extended or a fully retracted position. The hydraulic circuit incorporates the serially plumbed, re-phasing cylinders for synchronized movement in a system with multiple pairs of cylinders.
Claims17
A hydraulic circuit comprising:
- a hydraulic power unit;
- a first cylinder pair coupled with the hydraulic power unit;
- a second cylinder pair coupled with the hydraulic power unit in parallel with the first cylinder pair;
- and
- a re-phasing valve coupled with each cylinder of the first and second cylinder pairs, the re-phasing valves being activated when a respective one of the cylinders reaches one of a fully extended position or a fully retracted position.
A hydraulic circuit for lifting or displacing a structure with simultaneous activation of multiple pairs of cylinders, the hydraulic circuit comprising:
- a hydraulic power unit;
- a first cylinder pair coupled with the hydraulic power unit and positioned on one side of the structure;
- a second cylinder pair coupled with the hydraulic power unit in parallel with the first cylinder pair and positioned on an opposite side of the structure, the hydraulic power unit simultaneously driving the first and second cylinder pairs;
- and
- a re-phasing valve coupled with each cylinder of the first and second cylinder pairs, the re-phasing valves being activated when a respective one of the cylinders reaches one of a fully extended or a fully retracted position, the re-phasing valves opening fluid flow across the hydraulic circuit without affecting a position of the cylinders.
Dependencies are inferred from the claim text.