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Fastener driving tool

A fastener and tool technology, which is applied in the field of internal combustion fastener propulsion tools, can solve problems such as ignition failure, equipment output fluctuation, and low efficiency.

Inactive Publication Date: 2008-12-03
POLY SYST PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the fuel / air mixture is ignited at low pressure, which results in a low burn rate and further inefficiency
This is especially problematic because the less efficient an internal combustion fastener advancing tool is, the more susceptible the device is to fluctuations in output, which can lead to ignition failure and unsatisfactory advancing force on the fastener

Method used

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Examples

Experimental program
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Embodiment Construction

[0037] Figures 1 and 2 show a combustion driven nail gun (tool) for firing nail fasteners. The nail gun includes a preparatory cylinder A and a power boost cylinder B housed in a tool body housing 62 . A tool support handle 7 with a grip 5 extends from the housing 62 and houses a fuel cartridge (reservoir) 3 . A battery 1 housed in a detachable battery case 2 is attached to a support handle 7 . The nail fastener barrel (or nail box) 4 delivers the nail fasteners 8 to the tool nose (or barrel) 9 .

[0038] The operation of the combustion nail gun will now be described. The user holds the combustion driven nail gun by the tool support handle 7 and the gun handle 5 . The user's finger is placed on the firing trigger 16 . The main micro trigger 15 is actuated. An electronic central processing unit (CPU) 18 is notified that the tool is in operation. The CPU 18 is switched on to the circuit of the ready cylinder drive with circulating sensor wheel 21 and main power supply slip...

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PUM

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Abstract

A fastener driving tool comprises a tool nose through which a fastener is fired; loading means for introducing the fastener into the tool nose. The fastener is adapted to be propelled by a gas combustion mechanism comprising a first priming cylinder (A) having a first piston (24) and an air intake (31) fluidally connected via a first valve means (32) to a second delivery cylinder (B) having a second piston (51). The first priming cylinder fluidally connected to a fuel gas reservoir (3) via a second valve means (26), the first priming cylinder adapted to receive fuel from the reservoir and air through the air intake thereby forming an air / fuel gas mixture therein. The first piston adapted to compress the air / fuel gas mixture and transfer same to the second deliver cylinder via said first valve means, the air / fuel mixture ignited therein and thereby urging the second piston towards the fastener and propelling same away from the tool nose.

Description

technical field [0001] The present invention relates to internal combustion fastener driving tools. Background technique [0002] Fastener driving tools have been developed that use internal combustion as a power source to drive fasteners, such as nails, into a workpiece or substrate. The tool ignites the fuel / air mixture in the combustion chamber to force a piston which then ejects the fastener out of the tool. The effectiveness of prior art tools is primarily limited by their efficiency in quickly igniting the entire volume of the fuel / air mixture. If an insufficient volume of fuel is combusted, the device delivers improper propulsion to the fastener. If the tool produces unreliable power output, the fastener may be advanced to an unsatisfactory depth or be insufficiently secured. Prior art equipment has attempted to address these inefficiencies in the past by making larger tools and consuming larger volumes of fuel. [0003] One such prior art device is described in U...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25C1/08B25C1/14
Inventor R·C·韦布
Owner POLY SYST PTY LTD