Expansible chamber devices – With releasable stop or latch means to prevent movement of... – Means includes element interfitting between working member...
Patent
1998-06-03
2000-08-29
Ryznic, John E.
Expansible chamber devices
With releasable stop or latch means to prevent movement of...
Means includes element interfitting between working member...
92 27, F15B 1526
Patent
active
061091650
ABSTRACT:
An improved combustion powered tool for driving fasteners into a workpiece includes a main housing enclosing a cylinder body and an adjacent combustion chamber. The tool includes a workpiece-contacting nosepiece attached to the housing at the end opposite the combustion chamber and holds fasteners to be driven into the workpiece. A reciprocally disposed piston is mounted within the cylinder body, and is attached to an elongate driver blade, the driver blade being used to impact the fasteners and drive them into the workpiece. At the upper end of the cylinder body is disposed a compressible piston retaining device. The retaining device is of sufficient strength to accommodate the weight of the piston and to retard the upward velocity of a returning piston, but is overcome when the tool is fired.
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Dewey George G
Velan George M
Illinois Tool Works Inc.
Ryznic John E.
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