Acoustical transformer for coupling sound waves from the diaphragm to the throat of a horn-type loudspeaker
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Description
FIG. 1 is a top plan view of the accoustical transformer for coupling sound waves from the diaphragm to the throat of a horn-type loudspeaker showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a side elevational view thereof;
FIG. 4 is a side elevational perspective view thereof; and
FIG. 5 is a side elevational perspective view thereof taken from the side opposite to that shown in FIG. 4.
Referenced Cited
U.S. Patent Documents
2037187 | April 1936 | Wente |
2183528 | December 1939 | Blackburn |
2858377 | October 1958 | Levy |
2942071 | June 1960 | Witchey |
3852529 | December 1974 | Schafft |
Patent History
Patent number: D249509
Type: Grant
Filed: Sep 23, 1976
Date of Patent: Sep 19, 1978
Assignee: Altec Corporation (Anaheim, CA)
Inventor: Clifford A. Henricksen (Yorba Linda, CA)
Primary Examiner: Bernard Ansher
Attorney: Edward A. Sokolski
Application Number: 5/725,981
Type: Grant
Filed: Sep 23, 1976
Date of Patent: Sep 19, 1978
Assignee: Altec Corporation (Anaheim, CA)
Inventor: Clifford A. Henricksen (Yorba Linda, CA)
Primary Examiner: Bernard Ansher
Attorney: Edward A. Sokolski
Application Number: 5/725,981
Classifications