Patent · US Expired

Horn speaker

US4091891A · kind A · utility

30Cited by
3References
2Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 10, 1976
Grant dateMay 30, 1978
Priority date—
Expiry dateMay 10, 1996

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04R1/30
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

A horn speaker comprising a diaphragm positioned close to a throat and side walls forming sound passages for radiating the vibrations of the diaphragm effectively as sound waves from the mouth of the speaker.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.