Compressor
US-2024200556-A1 · Jun 20, 2024 · US
Vane pump
US2018306182A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018306182-A1 |
| Application number | US-201615763833-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 2, 2016 |
| Priority date | Sep 29, 2015 |
| Publication date | Oct 25, 2018 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A vane pump includes a rotor; a plurality of slits that are formed in the rotor, the plurality of vanes being respectively inserted into the plurality of slits in a slidable manner; a cam ring that has a cam face on which tip-ends of the vanes slide by the rotation of the rotor; and pump chambers that are defined by the rotor, the cam ring, and an adjacent pair of the vanes. The plurality of vanes have a plurality of first vanes that are formed by applying a DLC coating on a base material and second vanes that are formed such that the base material is exposed, the first vanes being respectively inserted into at least two adjacent slits of the plurality of slits.
First claim
Opening claim text (preview).
1 . A vane pump comprising: a rotor linked to a driving shaft; a plurality of slits formed in the rotor in a radiating pattern to open in an outer circumference of the rotor; a plurality of vanes respectively inserted into the plurality of slits in a slidable manner; a cam ring having an inner circumferential surface on which tip-ends of the vanes slide by rotation of the rotor; pump chambers defined by the rotor, the cam ring, and the pair of adjacent vanes, wherein the plurality of vanes have: a plurality of first vanes formed by applying DLC coating on a base material; and a second vane formed such that the base material is exposed, and the first vanes are respectively inserted into at least two adjacent slits of the plurality of slits. 2 . The vane pump according to claim 1 , further comprising back pressure chambers into which working fluid discharged from the pump chamber is guided, the back pressure chambers being defined in the slits by base-end portions of the vanes. 3 . The vane pump according to claim 1 , wherein the plurality of vanes have the two first vanes. 4 . The vane pump according to claim 1 , wherein the plurality of vanes have the three first vanes, and the three first vanes are arranged side by side in a consecutive manner. 5 . The vane pump according to claim 1 , wherein the plurality of vanes have the four first vanes, and the four first vanes are arranged such that pairs of the adjacent first vanes face against each other with a center of the rotor located therebetween.
Assignees
Inventors
Classifications
Axial sealings for working fluid · CPC title
- F04C2/344Primary
with vanes reciprocating with respect to the inner member · CPC title
the vanes consisting of two or more parts · CPC title
Carbon, e.g. graphite · CPC title
Cold start · CPC title
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Frequently asked questions
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- What does patent US2018306182A1 cover?
- A vane pump includes a rotor; a plurality of slits that are formed in the rotor, the plurality of vanes being respectively inserted into the plurality of slits in a slidable manner; a cam ring that has a cam face on which tip-ends of the vanes slide by the rotation of the rotor; and pump chambers that are defined by the rotor, the cam ring, and an adjacent pair of the vanes. The plurality of va…
- Who is the assignee on this patent?
- Kyb Corp
- What technology area does this patent fall under?
- Primary CPC classification F04C2/344. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Oct 25 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).