Acoustic speaker device with a diaphragm having a spider web typ

Details Acoustic speaker device with a diaphragm having a spider web typ Acoustic speaker device with a diaphragm having a spider web typ

1987-01-27

1989-03-28

Caldwell, Sr., John W.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381158, 381177, 381192, 381199, 181170, 181173, H04R 904

Patent

active

048171654

ABSTRACT:
A dome-shaped acoustic motor diaphragm having a core of aluminum foil in the form of a spider web configuration resulting in the dome shape, the diaphragm being in the form of an annular semi-dome outer diaphragm part and a dome-shaped cylindrical inner diaphragm part. The spider web core also enables a wide variety of diaphragm shapes to be possible. A voice coil bobbin is passed through a lower diaphragm layer and unto the underside of an upper diaphram layer via the core which more or less is the greatest height of the same core in the region of the outer diaphragm part, thereby resulting in a highly effective bonding strength between these parts. Damping is accomplished by means of a cylindrical bellows having a height representing the maximum excursion distance of the movable parts. A bobbin guide positioned within the bobbin and bonded to the inner face of the lower magnetic pole piece prevents the bobbin and voice coil in the annular air gap from contacting the pole pieces.

REFERENCES:
patent: 4003449 (1977-01-01), Bertagni
patent: 4198550 (1980-04-01), Matsuda et al.
patent: 4300655 (1981-11-01), Sakamoto et al.
patent: 4311881 (1982-01-01), Reynard
patent: 4322583 (1982-03-01), Maeda
patent: 4472604 (1984-09-01), Nakamura et al.

Affiliated with

Also associated with

Rating

Acoustic speaker device with a diaphragm having a spider web typ does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acoustic speaker device with a diaphragm having a spider web typ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic speaker device with a diaphragm having a spider web typ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1666255