Dynamic loudspeaker

Details Dynamic loudspeaker Dynamic loudspeaker

1984-04-04

1985-10-15

Rubinson, Gene Z.

1791155R, 179119R, H04R 902

Patent

active

045476322

ABSTRACT:
An electromagnetic loudspeaker with a magnetic structure provided with a cylindrical gap and a frame supporting a diaphragm, the diaphragm carrying a voice coil suspended in the gap of the magnetic structure, the magnetic structure being provided with a thin coating of plastic such as teflon or nylon confronting the voice coil to prevent abrasion or shorting of the voice coil in the event the voice coil contacts the magnetic structure.

REFERENCES:
patent: 1997051 (1935-04-01), Engholm
patent: 3258543 (1966-06-01), Mosier
patent: 3925626 (1975-12-01), Stallings, Jr.
patent: 4029911 (1977-06-01), Albinger
patent: 4297537 (1981-10-01), Babb

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