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US-9751411-B2 · Sep 5, 2017 · US
Pump/motor with integrated variator for use in hydraulic systems
US11255359B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11255359-B2 |
| Application number | US-201816480112-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 23, 2018 |
| Priority date | Jan 23, 2017 |
| Publication date | Feb 22, 2022 |
| Grant date | Feb 22, 2022 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A variator includes an epicyclic gear set that has at least three nodes. The variator includes a pumping unit connected to a first node of the epicyclic gear set. The variator includes a clutch connected to a second node of the epicyclic gear set. The clutch is selectively movable between three positions. When in the first position, the clutch allows the second node to freewheel. When in the second position, the clutch connects the second node to a fixed surface. When in the third position, the clutch connects the second node to an electric motor. The variator includes a receiver connected to the third node of the epicyclical gear set. The receiver is configured to receive a drive shaft.
First claim
Opening claim text (preview).
We claim: 1. A variator comprising: a housing; a planetary gear set positioned within the housing, the planetary gear set having at least a sun gear, a ring gear, and a planetary carrier; an axial hydraulic piston pump having a variable displacement and being connected to the planetary carrier of the planetary gear set, the axial hydraulic piston pump having a pump shaft, a swash plate, and a rotating group, the rotating group having a plurality of pistons connected to the swash plate for varying the angle of the swash plate, the axial hydraulic piston pump being positioned within the housing; an electric motor positioned within the housing, the electric motor having a stator and a rotatable rotor, wherein the rotatable rotor is positioned around the axial hydraulic piston pump within the housing; and a clutch being connected to the ring gear of the planetary gear set, the clutch being selectively movable between three positions, wherein, when in a first position, the clutch allows the ring gear to freewheel, when in a second position, the clutch connects the ring gear to the housing of the variator, and when in a third position, the clutch connects the ring gear to the rotatable rotor of the electric motor. 2. The variator of claim 1 , wherein the stator is positioned around a rotatable rotor. 3. The variator of claim 1 , wherein the rotatable rotor is positioned around the stator. 4. The variator of claim 1 , wherein the rotor includes a plurality of magnets and the stator includes a plurality of conductors. 5. The variator of claim 1 , wherein the stator is at least partially in contact with a hydraulic oil within the housing. 6. The variator of claim 1 , wherein the electric motor is an electric motor-generator.
Assignees
Inventors
Classifications
with gears · CPC title
with friction clutches · CPC title
for adjusting the pump output or bypass in response to demand · CPC title
- F16H47/04Primary
the mechanical gearing being of the type with members having orbital motion · CPC title
Closed circuit · CPC title
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Frequently asked questions
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- What does patent US11255359B2 cover?
- A variator includes an epicyclic gear set that has at least three nodes. The variator includes a pumping unit connected to a first node of the epicyclic gear set. The variator includes a clutch connected to a second node of the epicyclic gear set. The clutch is selectively movable between three positions. When in the first position, the clutch allows the second node to freewheel. When in the se…
- Who is the assignee on this patent?
- Eaton Intelligent Power Ltd, Danfoss Power Solutions Ii Technology As
- What technology area does this patent fall under?
- Primary CPC classification F16H47/04. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 22 2022 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).