Radially arcuated speaker cone

Details Radially arcuated speaker cone Radially arcuated speaker cone

1988-12-30

1989-11-21

Fuller, B. R.

Acoustics

Diaphragm

Sectional diaphragm

181172, 181173, 381202, G10K 1300

Patent

active

048816175

ABSTRACT:
The present invention is directed to an improved acoustic speaker having a cone located about a transducer wherein the cone has a plurality a thin, pie-shaped segments radiating outwardly from the transducer with each of the segments having an accuated cross-section, thereby creating a concave side and a convex side. The segments are highly concave at the transducer and less concave with increasing radial distance from the transducer. The segments are made from a metal foil and the width of the segments may increase lineraly with radial distance so as to create a constant acoustical resistance radially. The segments preferably terminate at a flexible, high sound absorption ring.

REFERENCES:
patent: 1699786 (1929-01-01), Goldsborough
patent: 1757107 (1930-05-01), Baltzley
patent: 1775294 (1930-09-01), Poroma
patent: 1787946 (1931-01-01), La Rue
patent: 1917013 (1933-07-01), Bostwick
patent: 2532741 (1950-12-01), Stevens
patent: 2960177 (1960-11-01), Hadrthen, Jr.
patent: 3364315 (1968-01-01), Gorike
patent: 3581015 (1971-05-01), Masuda
patent: 4013846 (1977-03-01), Krawczak et al.
patent: 4300655 (1981-11-01), Sakamoto et al.

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