Velocity control and nosepiece stabilizer system for combustion

Details Velocity control and nosepiece stabilizer system for combustion Velocity control and nosepiece stabilizer system for combustion

1996-02-09

1998-09-01

Smith, Scott A.

Elongated-member-driving apparatus

Explosive-type driving means

With plunger

227 8, 227130, 227142, B25C 104

Patent

active

057998558

ABSTRACT:
A piston velocity control and stability control system is provided for a combustion powered tool having a self contained combustion engine. The system includes a ring that may be adjusted relative to exit ports in a cylinder of the combustion engine. The ring includes openings which may be incrementally aligned between a completely exposed, and a substantially closed position relative to the exit ports. Displaced air volume within the cylinder exits through the exit ports as a piston advances down the cylinder, and the velocity of the piston will be greatest when the exit ports are completely exposed. User initiated reduction of the effective size of the exit ports by adjustment of the ring will reduce piston velocity as described per application. A nosepiece used to guide the driver blade and position the blade over a fastener is isolated from the cylinder so that the nosepiece remains stable relative to the workpiece upon combustion and until the driver blade strikes the fastener.

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