Hydraulic system for a working machine and a method for controlling a hydraulic system
US-9850918-B2 · Dec 26, 2017 · US
Hydraulic transmission apparatus making quick positive clutching/declutching possible
US8978375B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8978375-B2 |
| Application number | US-201113029294-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 17, 2011 |
| Priority date | Feb 18, 2010 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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- Title
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Abstract
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Hydraulic transmission apparatus including a pressurized fluid source and at least one hydraulic motor fed by said pressurized fluid source. The motor has two motor ducts for feed/discharge, and one casing duct. The motor can be operated in assisted mode, in which it generates torque or in unassisted mode in which it does not generate any torque and its pistons are maintained in the retracted position under the effect of the pressure in the casing duct. The apparatus further includes an accumulator suitable for feeding: the motor ducts during a stage of passing from the unassisted mode to the assisted mode in order to facilitate deployment of the pistons; and the casing duct during a stage of passing from the assisted mode to the unassisted mode in order to facilitate retraction of the pistons. This apparatus thus enables the motor to be positively clutched/declutched quickly.
First claim
Opening claim text (preview).
What is claimed is: 1. Hydraulic transmission apparatus for a vehicle, the apparatus including a pressurized fluid source and at least one hydraulic motor suitable for being fed with hydraulic fluid by the pressurized fluid source in order to drive at least one vehicle mover member; the motor being connected to: a motor duct for feeding said motor with fluid, and a motor duct for discharging fluid from said motor, which motor ducts are suitable for being put into communication w…
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Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8978375B2 cover?
- Hydraulic transmission apparatus including a pressurized fluid source and at least one hydraulic motor fed by said pressurized fluid source. The motor has two motor ducts for feed/discharge, and one casing duct. The motor can be operated in assisted mode, in which it generates torque or in unassisted mode in which it does not generate any torque and its pistons are maintained in the retracted p…
- Who is the assignee on this patent?
- Prigent Andre, Basson Benjamin, Heren Jean, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification F16H61/4096. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).