Patent ID: 6045024
Filing Date: 2000-04-04
Classification: B25C

Abstract:
A fastener driving tool operable through an internal combustion driven piston, the tool comprising:(a) a driver body comprising a cylinder head and a piston housing, a piston housed in the piston housing, a driving member attached to the piston; a combustion chamber defined by the cylinder head, piston housing and piston; the piston and driving member being axially arranged and configured within the piston housing to drive a fastener upon combustion of a mixture of fuel and air in the combustion chamber; the cylinder head comprising an interior surface, the cylinder head defining an intake port; and(b) an intake valve comprising a reed valve, the reed valve being located on the interior surface of the cylinder head, the reed valve comprising a reed portion and a raised, nonresilient seat portion, the raised nonresilient seat portion comprising a raised, annular ridge extending from the interior surface of the cylinder head and enclosing the intake port.