Engine exhaust means for motor propelled boats

Details Engine exhaust means for motor propelled boats Engine exhaust means for motor propelled boats

1978-01-04

1980-07-22

Basinger, Sherman D.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

115 70, 115 72, 181249, 181255, 181282, F01N 100

Patent

active

042134145

ABSTRACT:
Engine noise attenuator for motor-propelled boats including a housing made of resilient material and having one end connected to the exhaust pipe and a perforated pipe disposed within the housing and supported by the housing wherein the perforated pipe is in communication with the exhaust pipe such that the perforations form a resonance chamber between the housing and the exhaust pipe.

REFERENCES:
patent: 963822 (1910-07-01), Smith
patent: 2059220 (1936-11-01), Fernstrum
patent: 2416452 (1947-02-01), Marx
patent: 3317001 (1967-05-01), Powers et al.
patent: 3369518 (1968-02-01), Jacobson

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