Acoustical transformer for coupling sound waves from the diaphragm to the throat of a horn-type loudspeaker

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Information

Patent Grant
D249509

References
Source

Patent Number
D249,509
Date Filed
Thursday, September 23, 1976
48 years ago
Date Issued
Tuesday, September 19, 1978
46 years ago

Inventors
- Clifford A. Henricksen
Original Assignees
- ALTEC CORPORATION
Examiners
- Ansher; Bernard
Agents
- Sokolski; Edward A.

US Classifications
- D14 - Recording, communication, or information retrieval equipment
- 181 - Acoustics
Field of Search
- US
- 181 156
- 181 158
- 181 166
- 181 159
- 181 185
- D14 37
International Classifications
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a accoustical transformer for coupling sound waves from the diaphragm to the throat of a horn-type loudspeaker, as shown.

US Referenced Citations (5)

Number	Name	Date	Kind
2037187	Wente	Apr 1936
2183528	Blackburn	Dec 1939
2858377	Levy	Oct 1958
2942071	Witchey	Jun 1960
3852529	Schafft	Dec 1974