Internal-combustion engines – Two-cycle – Whirl through piston-controlled ports
Reexamination Certificate
2006-12-26
2006-12-26
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Two-cycle
Whirl through piston-controlled ports
C137S524000
Reexamination Certificate
active
07152557
ABSTRACT:
An exhaust valve assembly may include a diaphragm connected to a restricting member. The diaphragm may be configured to change a position of the restricting member based on a pressure on a first side of the diaphragm. A spring may abut a second side of the diaphragm opposite the first side. The spring may apply a force to the second side of the diaphragm. An adjustable portion adjacent the spring may be configured to change the force applied to the diaphragm by the spring.
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Ali Hyder
Amalgamated Performance Enhancements, L.L.C.
Cronin Stephen K.
Harrity & Snyder LLP
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