Moving coil loudspeakers

Details Moving coil loudspeakers Moving coil loudspeakers

1981-02-20

1984-01-24

Fuller, Benjamin R.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

179181R, 181167, 428323, 524427, 524451, 524584, H04R 712, H04R 902, H04R 906

Patent

active

044278462

ABSTRACT:
A moving coil loudspeaker having a cone (14) made of homopolymeric polypropylene which is stiffened by the incorporation of from 20% to 40% mineral filler such as talc or chalk, possibly also up to 5% carbon black filler, and preferably is additionally rigidified at the cone center by a stiffening ring (21) of nylon or like hard plastics material. A further feature of the invention resides in the provision of a metal former (22) carrying lapping paper (25) at the joint with the cone.

REFERENCES:
patent: 3457216 (1969-07-01), Dew
patent: 3578104 (1971-05-01), Sotome
patent: 4190746 (1980-02-01), Harwood et al.

Affiliated with

Also associated with

Rating

Moving coil loudspeakers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Moving coil loudspeakers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moving coil loudspeakers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1288542