Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2011-03-01
2011-03-01
Enad, Elvin G (Department: 2832)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S254000, C060S312000
Reexamination Certificate
active
07896128
ABSTRACT:
An auto-sensing, automatic adjusting exhaust baffle; for reducing noise emissions produced by internal combustion engines, while improving overall engine performance, i.e., torque and horsepower. The design uses a spherical shape to evacuate spent exhaust gas, thus scavenging the surrounding exhaust gases to adjust the backpressure, while reducing the noise exiting the exhaust pipe at lower rpm's. The device uses a sphere with an internal bearing; sliding linearly on a shaft and said sphere and bearing being acted upon by exhaust gasses and a compression spring mounted axially over the diameter of the shaft. The purpose of this device is to reduce noise while improving tuning of the air/fuel intake system, by adjusting backpressure of the exhaust system. The lesser amount of exhaust pressure, the less the sphere moves, as in idle to just off of idle, this results in a quiet operational mode of the invention. As more exhaust pressure is presented, as in higher throttle positions, the more the sphere moves away from the discharge ports, the louder the sound will be from the exit end of the exhaust pipe, this results in the active mode of the invention, obtaining the desired sound and adjusted backpressure throughout the power band.
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Coate Richard S.
De Leo Theodore
Enad Elvin G
Luks Jeremy
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