Automatic start and stop of a portable engine driven power source
US-9206780-B2 · Dec 8, 2015 · US
Start safety circuit arrangement in a work apparatus having an internal combustion engine
US9005083B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9005083-B2 |
| Application number | US-201313930021-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 28, 2013 |
| Priority date | Jun 28, 2012 |
| Publication date | Apr 14, 2015 |
| Grant date | Apr 14, 2015 |
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Abstract
Official abstract text for this publication.
A start safety circuit arrangement is incorporated into a work apparatus having an internal combustion engine. Combustion air and fuel are supplied to the combustion chamber by a control unit for the engine operation. The fuel/air mixture in the combustion chamber is ignited by an ignition plug. An operating mode selector has a start position for enriching the fuel/air mixture. A safety brake device in an operating mode brakes the work tool. A start position sensor is arranged on the operating mode selector and a brake position sensor is associated with the safety brake device. The status signal of the brake position sensor and the status signal of the start position sensor are combined to cause the control unit to disable the engine operation if the operating mode selector is in start position (III) and the safety brake device is in its standby mode (B).
First claim
Opening claim text (preview).
What is claimed is: 1. A start safety circuit arrangement in a work apparatus, the work apparatus including an internal combustion engine having a cylinder defining a combustion chamber and having a spark plug in said combustion chamber; said internal combustion engine further having an ignition module connected to said spark plug; a control unit configured for the operation of said engine by controlling a supply of combustion air and fuel to said combustion chamber to form an air/…
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- What does patent US9005083B2 cover?
- A start safety circuit arrangement is incorporated into a work apparatus having an internal combustion engine. Combustion air and fuel are supplied to the combustion chamber by a control unit for the engine operation. The fuel/air mixture in the combustion chamber is ignited by an ignition plug. An operating mode selector has a start position for enriching the fuel/air mixture. A safety brake d…
- Who is the assignee on this patent?
- Stihl Ag & Co Kg Andreas
- What technology area does this patent fall under?
- Primary CPC classification F02D29/00. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 14 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).