Patent ID: 6915772

Claim:
An internal combustion engine, comprising: an engine housing including a crankcase and a cylinder; a crankshaft, connecting rod, and piston assembly disposed within said engine housing, said piston reciprocable within said cylinder to generate positive and negative pressure pulses within said crankcase during cranking and running speeds of said engine; a carburetor attached to said engine housing; and a priming system, comprising: a chamber in fluid communication with said crankcase through a restrictor, said chamber also in fluid communication with said carburetor through a one-way valve permitting fluid flow from said chamber to said carburetor, said restrictor dimensioned to allow substantially uninhibited communication of pressure pulses between said crankcase and said chamber at engine cranking speeds and to dampen communication of pressure pulses between said crankcase and said chamber at engine running speeds; whereby at engine cranking speeds, positive pressure pulses may pass from said chamber to said carburetor through said one-way valve, and at engine running speeds, said positive pressure pulses are substantially absent within said chamber.