Fuel pump
US-2018142653-A1 · May 24, 2018 · US
Fuel pump
US11242860B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11242860-B2 |
| Application number | US-201816500008-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2018 |
| Priority date | Apr 7, 2017 |
| Publication date | Feb 8, 2022 |
| Grant date | Feb 8, 2022 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A fuel pump includes an output shaft of a motor and an impeller configured to rotate integrally with the output shaft. An outer periphery of the output shaft includes a first flat portion for engaging with the impeller. The impeller includes a through hole at a center thereof, the through hole being larger than an outer diameter of the output shaft and including a second flat portion for engaging with the output shaft. In this fuel pump, when the output shaft and the impeller are arranged coaxially, spots exist which have different lengths of a gap between the first flat portion and the second flat portion in a rotational axis direction of the output shaft.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fuel pump comprising: a motor including a motor section and an output shaft extending from the motor section and an impeller configured to rotate integrally with the output shaft, wherein an outer periphery of the output shaft comprises a D-shaped portion for engaging with the impeller, the D-shaped portion defined by a first flat portion connected to an annular portion, the impeller comprises a D-shaped through hole at a center thereof, the D-shaped through hole being larger than an outer shape of the output shaft and defined by a second flat portion connected to a second annular portion for engaging with the D-shaped portion of the output shaft, and when the output shaft and the impeller are arranged coaxially, in a rotational axis direction of the output shaft, a portion exists where a gap between the first flat portion and the second flat portion is narrower than the gap at an end of the motor section. 2. The fuel pump according to claim 1 , wherein the output shaft comprises portions which have different lengths between the first flat portion and a rotational axis of the output shaft in the rotational axis direction. 3. The fuel pump according to claim 2 , wherein the impeller comprises portions which have different lengths between the second flat portion and a central axis of the impeller in a central axis direction of the impeller. 4. The fuel pump according to claim 1 , wherein the impeller comprises portions which have different lengths between the second flat portion and a central axis of the impeller in a central axis direction of the impeller.
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11242860B2 cover?
- A fuel pump includes an output shaft of a motor and an impeller configured to rotate integrally with the output shaft. An outer periphery of the output shaft includes a first flat portion for engaging with the impeller. The impeller includes a through hole at a center thereof, the through hole being larger than an outer diameter of the output shaft and including a second flat portion for engagi…
- Who is the assignee on this patent?
- Aisan Ind
- What technology area does this patent fall under?
- Primary CPC classification F04D29/20. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 08 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).