F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
171/9
F02B 65/00 (2006.01) A01G 3/033 (2006.01) B25C 1/08 (2006.01) B25D 9/10 (2006.01) B25F 3/00 (2006.01)
Patent
CA 1224722
ABSTRACT OF THE DISCLOSURE A portable power tool comprising a housing defining a combustion chamber and a cylindrical chamber having a reciprocating piston therein. The combustion chamber has an opening defined by a valve seat closable by a poppet valve and serving as an inlet at one side for unburnt gases or vaporized fuel admitted under pres- sure and an outlet at an opposite side for spent gases. An ignition assembly is provided for igniting unburnt fuel in the combustion chamber which is synchronized with the closure of the poppet valve. The combustion chamber and the poppet valve are shaped and arranged such that unburnt fuel admitting through one side of the valve seat opening will sweep the spent fuel of a preceding ignition cycle from the combustion chamber out through the other side of the valve seat opening.
452227
Sim & Mcburney
Veldman Alphonsus G.g.
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