Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2006-02-13
2009-02-10
Benson, Walter (Department: 2837)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S229000, C181S241000, C181S248000, C181S264000, C181S271000
Reexamination Certificate
active
07487857
ABSTRACT:
An apparatus for sonic coupling between an intake tract or engine compartment and a vehicle interior of a motor vehicle has a housing into which sound enters from the intake tract via a first line, and out of which sound exits into the vehicle interior via a second line. A transmission body is arranged in the housing, the transmission body having a gas-tight separating wall between a sound inlet into the housing and a sound outlet out of the housing. The position of the separating wall is held essentially constant by a positioning device. A transmission wall between the separating wall and the housing provides an acoutis transfer function that is adjustable. The separating wall runs generally perpendicular to the longitudinal axis of sound propagation and the transmission wall runs at an angle α to the longitudinal axis of sound propagation.
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International Search Report dated Jun. 13, 2006, issued in corresponding PCT/DE2006/000242, filed Feb. 13, 2006.
Benson Walter
Christensen O'Connor Johnson & Kindness PLLC
Luks Jeremy
WOCO Industrietchnik GmbH
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