Low-pulse vane pumps
US-10018197-B2 · Jul 10, 2018 · US
Vane pump driven by an engine of an automobile
US11149730B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11149730-B2 |
| Application number | US-201916445418-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 19, 2019 |
| Priority date | Jul 11, 2018 |
| Publication date | Oct 19, 2021 |
| Grant date | Oct 19, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
A vane pump includes a housing, a rotor rotatable about a rotation axis, and a vane that rotates together with the rotor and reciprocates in a radial direction with respect to the rotor, the vane dividing a pump chamber into a plurality of working chambers. At least one of opposite end surfaces of the vane in an axial direction is a sliding surface that slidably contacts an inner surface of the housing via an oil film, and an oil reservoir portion is provided in the sliding surface in a recessed manner.
First claim
Opening claim text (preview).
What is claimed is: 1. A vane pump comprising: a housing with a pump chamber; a rotor rotatable about its own axis; and a vane that rotates together with the rotor and reciprocates in a radial direction with respect to the rotor, the vane dividing the pump chamber into a plurality of working chambers, wherein at least one of opposite end surfaces of the vane in an axial direction is a sliding surface that slidably contacts an inner surface of the housing via an oil film, an oil reservoir portion that stores lubricating oil is provided in a gap defined by the sliding surface between the vane and the inner surface of the housing, and the oil reservoir portion has a bottom, and both opposite end surfaces of the vane in the axial direction do not communicate with each other through the oil reservoir portion. 2. The vane pump according to claim 1 , wherein the oil reservoir portion is not open to the working chambers. 3. The vane pump according to claim 1 , wherein the oil reservoir portion extends over an entire length of the sliding surface in the radial direction. 4. The vane pump according to claim 1 , wherein the oil reservoir portion is an oil groove that extends in the radial direction.
Assignees
Inventors
Classifications
with vanes reciprocating with respect to the inner member · CPC title
the vanes consisting of two or more parts · CPC title
of resilient material · CPC title
Lubrication (of machines or engines in general F01M); Lubricant separation (separation in general B01D) · CPC title
- F04C2/3441Primary
the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation · CPC title
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Frequently asked questions
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- What does patent US11149730B2 cover?
- A vane pump includes a housing, a rotor rotatable about a rotation axis, and a vane that rotates together with the rotor and reciprocates in a radial direction with respect to the rotor, the vane dividing a pump chamber into a plurality of working chambers. At least one of opposite end surfaces of the vane in an axial direction is a sliding surface that slidably contacts an inner surface of the…
- Who is the assignee on this patent?
- Taiho Kogyo Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F04C2/3441. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 19 2021 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).