Hydraulic machine
US-2016377079-A1 · Dec 29, 2016 · US
Piston-to-shoe interface lubrication method
US9212656B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9212656-B2 |
| Application number | US-201113031445-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 21, 2011 |
| Priority date | Feb 21, 2011 |
| Publication date | Dec 15, 2015 |
| Grant date | Dec 15, 2015 |
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Abstract
Official abstract text for this publication.
Methods and apparatus are provided for lubricating a piston-to-shoe interface in a hydraulic motor or pump. Piston assemblies are installed in a housing that are each adapted to receive a reciprocating drive force and are each configured, in response thereto, to cyclically move between an intake direction and a discharge direction. Each piston assembly includes a piston and a piston shoe, and the piston, the piston shoe, or both have a plurality of pockets formed in a surface that defines a piston-to-shoe interface. When the pistons cyclically move, liquid is supplied to each piston-to-shoe interface to form a hydrostatic bearing at each piston-to-shoe interface. A portion of the liquid that is supplied to each piston-to-shoe interface is selectively supplied to and from one or more of the plurality of pockets.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for lubricating a piston-to-shoe interface in an axial piston machine that comprises a plurality of piston assemblies that are each adapted to receive a reciprocating drive force and configured, in response thereto, to cyclically move between an intake direction and a discharge direction, wherein each piston assembly comprises (1) a piston that includes a first end and a substantially rounded second end, the substantially rounded second end having a…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F04B1/124Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9212656B2 cover?
- Methods and apparatus are provided for lubricating a piston-to-shoe interface in a hydraulic motor or pump. Piston assemblies are installed in a housing that are each adapted to receive a reciprocating drive force and are each configured, in response thereto, to cyclically move between an intake direction and a discharge direction. Each piston assembly includes a piston and a piston shoe, and t…
- Who is the assignee on this patent?
- Rateick Richard, Rowan William Scott, Portolese Larry, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F04B1/124. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 15 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).