Air flow arrangement for a reduced-emission single cylinder...

Details Air flow arrangement for a reduced-emission single cylinder... Air flow arrangement for a reduced-emission single cylinder...

2006-08-08

2006-08-08

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder head

C123S1950HC, C123S188600

Reexamination Certificate

active

07086367

ABSTRACT:
The present invention provides a reduced emission, single cylinder engine incorporating an air flow arrangement for improving flow efficiency of the intake air drawn into the engine and the exhaust discharged from the engine.

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FIG. A illustrates a side view of an engine housing of a vertical-shaft QUANTUM brand engine sold by Briggs and Stratton Corp. at least as early as Jul. 1989. (Statement of Relevance Attached).
FIG. B illustrates a top view of the engine housing of FIG. A (Statement of Relevance Attached).
FIG. C illustrates a cross-sectional view of the engine housing of FIG. A, depicting an intake port and an intake valve positioned in the intake port (Statement of Relevance Attached).
FIG. D illustrates a cross-sectional view of the engine housing of FIG. A, depicting an exhaust port and an exhaust valve positioned in the exhaust port (Statement of Relevance Attached).
FIG. E illustrates a perspective view of an intake pipe for use with the engine housing of FIG. A, (Statement of Relevance Attached).
FIG. F illustrates a cross-sectional view of the intake pipe of FIG. E (Statement of Relevance Attached).

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