Portable dunnage bag inflator
US-2016368410-A1 · Dec 22, 2016 · US
Fan control system
US8939730B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8939730-B2 |
| Application number | US-201113151370-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 2, 2011 |
| Priority date | May 13, 2011 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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- Title
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Abstract
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A fan control system includes first and second fan control units. Each fan control unit includes a connector, a delay circuit, a switch unit, and a control circuit. Each connector is connected to a corresponding fan interface to receive a voltage signal. The delay circuit of the first fan control unit delays the voltage signal for a first period of time, and turns on the corresponding switch unit after the first period of time. The delay circuit of the second fan control unit delays the voltage signal for a second period of time, and turns on the corresponding switch unit after the second period of time. Each control circuit receives the corresponding delayed voltage signal, to start the corresponding fan. The first period of time is unequal to the second period of time.
First claim
Opening claim text (preview).
What is claimed is: 1. A fan control system to control first and second fans to be started at different time, the fan control system comprising: a first fan control unit connected between a first fan interface of a motherboard and the first fan; and a second fan control unit connected between a second fan interface of the motherboard and the second fan, wherein each of the first and second fan control units comprising: a connector connected to the corresponding fan interface o…
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Classifications
- F04D27/008Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8939730B2 cover?
- A fan control system includes first and second fan control units. Each fan control unit includes a connector, a delay circuit, a switch unit, and a control circuit. Each connector is connected to a corresponding fan interface to receive a voltage signal. The delay circuit of the first fan control unit delays the voltage signal for a first period of time, and turns on the corresponding switch un…
- Who is the assignee on this patent?
- Wu Kang, Hongfujin Prec Ind Shenzhen, Hon Hai Prec Ind Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F04D27/008. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 27 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).