Percussion tool
US-2024198505-A1 · Jun 20, 2024 · US
Power tool
US8939229B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8939229-B2 |
| Application number | US-201113156608-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 9, 2011 |
| Priority date | Jun 10, 2010 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A power tool is disclosed. The power tool has a striker, which is guided along an axis in a guide tube. A pneumatic chamber has a volume which varies with a movement of the striker. The pneumatic chamber is closed by the striker, the guide tube and a valve device. The valve device has in a flow channel a sealing element that is moveable between two positions in a bearing along the axis. The flow channel has a first cross-sectional area in a first of the two positions of the sealing element adjacent to a first mating surface of the bearing, and the flow channel has a second cross-sectional area in a second of the two positions of the sealing element adjacent to second mating surface of the bearing offset from the first mating surface along the axis. The second cross-sectional area is greater than the first cross-sectional area.
First claim
Opening claim text (preview).
What is claimed is: 1. A power tool, comprising: a striker; a guide tube in which the striker is guided along an axis; and a pneumatic chamber which is closed by the striker, the guide tube, and a valve device, wherein a volume of the pneumatic chamber is variable based on a movement of the striker along the axis; wherein, in a flow channel between the striker and the guide tube, the valve device has a sealing element that is moveable between a first position and a second po…
Assignees
Inventors
Classifications
- B25D17/06Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8939229B2 cover?
- A power tool is disclosed. The power tool has a striker, which is guided along an axis in a guide tube. A pneumatic chamber has a volume which varies with a movement of the striker. The pneumatic chamber is closed by the striker, the guide tube and a valve device. The valve device has in a flow channel a sealing element that is moveable between two positions in a bearing along the axis. The flo…
- Who is the assignee on this patent?
- Hartmann Markus, Kohlschmied Frank, Daubner Christian, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B25D17/06. Mapped technology areas include Operations & Transport.
- 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).