Loudspeaker low profile quarter wavelength transmission line...

Details Loudspeaker low profile quarter wavelength transmission line... Loudspeaker low profile quarter wavelength transmission line...

2007-10-23

2007-10-23

Lee, John R. (Department: 2878)

Acoustics

Diaphragm and enclosure

Reflex baffle

C181S193000, C181S279000

Reexamination Certificate

active

11430351

ABSTRACT:
A speaker enclosure including a compact quarter wavelength transmission path in the shape of a closed spiral that expands radially outward from a centrally located loudspeaker mounting location. The height of the transmission path has a minimum height that is equal to the height of the basket of the desired speaker. The quarter wavelength transmission path spiral of the provides an aerodynamic path for air flow therein which reduces the turbulence of air flow to a minimum that in turn provides even resistance to the air flow within the transmission line (Exhale vs. Inhale).

REFERENCES:
patent: 1836222 (1931-12-01), Bonine
patent: 3687221 (1972-08-01), Bonnard
patent: 3917024 (1975-11-01), Kaiser, Jr.
patent: 3923124 (1975-12-01), Hancock
patent: 5751827 (1998-05-01), Takahashi
patent: 6425456 (2002-07-01), George
patent: 6634455 (2003-10-01), Yang
patent: 6648098 (2003-11-01), Nichols
patent: 6973994 (2005-12-01), Mackin et al.
patent: 7051835 (2006-05-01), Martikainen

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