Fuel and propellant composition for combustion tools
US-2016244684-A1 · Aug 25, 2016 · US
High efficiency engine for combustion nailer
US9492915B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9492915-B2 |
| Application number | US-201113222549-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 31, 2011 |
| Priority date | Aug 31, 2011 |
| Publication date | Nov 15, 2016 |
| Grant date | Nov 15, 2016 |
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Abstract
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A combustion tool is provided, including an engine with a ratio of cylinder volume to combustion chamber volume of at least 1.1.
First claim
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What is claimed is: 1. A combustion tool having an engine with a ratio of cylinder volume to combustion chamber volume consisting of a range from 1.1:1.0 to 1.2:1.0, wherein said engine is constructed and arranged to achieve a post-combustion piston return in about 80 milliseconds or less. 2. The tool of claim 1 , which has a piston stroke of approximately 3.2 to 3.25 inches, wherein said engine produces approximately 45 Joules of energy during a combustion cycle when provided a designated fuel dosage, wherein when used in a different compared tool having the same piston stroke of approximately 3.2 to 3.25 inches and a ratio of cylinder volume to combustion chamber volume from 0.6:1.0 to 0.7:1.0, the engine produces approximately 30 Joules of energy when provided the same designated fuel dosage. 3. The tool of claim 2 , wherein said designated fuel dosage is approximately 13 milligrams. 4. The tool of claim 2 , wherein approximately 50% greater energy is obtained compared to the compared tool. 5. The tool of claim 4 , wherein the designated fuel dosage is approximately 13 milligrams. 6. The tool of claim 1 , wherein a resulting driving energy per milligram of a designated fuel dosage is approximately 3.45 Joules/milligram. 7. A combustion nailer having a combustion engine with a ratio of cylinder volume to combustion chamber volume of at least 1.1:1.0 and having a piston stroke of approximately 3.2 to 3.25 inches and a first cylinder diameter, said engine producing approximately 45 Joules of energy in a combustion cycle when provided a designated fuel dosage of approximately 13 milligrams, wherein when used in a different compared combustion tool having the same piston stroke of approximately 3.2 to 3.25 inches and a second smaller cylinder diameter while using the same designated fuel dosage of approximately 13 milligrams, the engine produces approximately 30 Joules of energy.
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- What does patent US9492915B2 cover?
- A combustion tool is provided, including an engine with a ratio of cylinder volume to combustion chamber volume of at least 1.1.
- Who is the assignee on this patent?
- Largo Marc, Zhao Hanxin, Illinois Tool Works
- What technology area does this patent fall under?
- Primary CPC classification B25C1/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 15 2016 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).