Supply pump
US-9476420-B2 · Oct 25, 2016 · US
Drainage device for closed chamber containing liquid
US9028681B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9028681-B2 |
| Application number | US-201113242006-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 23, 2011 |
| Priority date | Jul 11, 2011 |
| Publication date | May 12, 2015 |
| Grant date | May 12, 2015 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A drainage device for draining liquid out of a closed chamber includes a main body, a piston assembly, and a transmission assembly. The main body defines a receiving chamber and a liquid inlet communicating with the receiving chamber to the closed chamber. The piston assembly is fixed in the receiving chamber of the main body. The transmission assembly is partially received in the receiving chamber. The transmission assembly and the piston assembly cooperatively separate the receiving chamber to a first chamber adjacent to the liquid inlet and a second chamber away from the liquid inlet. The transmission assembly is slidably received in the receiving chamber, thereby causing air pressure differences between the first chamber and the second chamber, to pump the liquid from the closed chamber to the second chamber. The main body further defines a plurality of discharge holes for draining liquid out of the second chamber.
First claim
Opening claim text (preview).
What is claimed is: 1. A drainage device for draining liquid out of a closed chamber, comprising: a main body defining a receiving chamber and a liquid inlet communicating with the receiving chamber to the closed chamber; a piston assembly fixed in the receiving chamber of the main body, the piston assembly comprising a fixed piston and a flexible member located at a side of the fixed piston away from the liquid inlet, the fixed piston defining a plurality of permeable holes, th…
Assignees
Inventors
Classifications
Operations & Transport · mapped topic
Fixed Constructions · mapped topic
- F04B1/0426Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9028681B2 cover?
- A drainage device for draining liquid out of a closed chamber includes a main body, a piston assembly, and a transmission assembly. The main body defines a receiving chamber and a liquid inlet communicating with the receiving chamber to the closed chamber. The piston assembly is fixed in the receiving chamber of the main body. The transmission assembly is partially received in the receiving cha…
- Who is the assignee on this patent?
- Yang Ming-Lu, Zhang Ya-Dong, Du Gao-Feng, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification F04B1/0426. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 12 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).