Loudspeaker having a laminate diaphragm of three layers

Details Loudspeaker having a laminate diaphragm of three layers Loudspeaker having a laminate diaphragm of three layers

1977-12-22

1978-10-24

Stellar, George G.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181170, 181172, H04R 710, H04R 720, H04R 906

Patent

active

041223144

ABSTRACT:
A loudspeaker having a diaphragm including first and second layers and a core sandwiched between the layers, the core being firmly secured to the inner surface of each layer so as to form a unitary structure therewith, a drive assembly causes the diaphragm to vibrate in accordance with a varying electrical input signal fed thereto, and a support is provided for supporting the diaphragm and drive assembly. The layers are formed of materials through which the velocity of propagation of a longitudinal wave is greater than 5000 m/sec, and the core is formed of materials having a shearing elastic modulus Gco which exceeds the value ##EQU1## WHERE E.sub.f is the longitudinal elasticity of each of the layers,

REFERENCES:
patent: 630246 (1899-12-01), Husted et al.
patent: 953970 (1910-04-01), Noble
patent: 1459803 (1923-01-01), Steurer
patent: 1570337 (1926-01-01), Cook
patent: 1639656 (1927-08-01), Kersten
patent: 1639713 (1927-08-01), Sykes
patent: 1702926 (1929-02-01), Bartsch et al.
patent: 1705771 (1929-03-01), Kimball
patent: 1721625 (1929-07-01), Hartman
patent: 1723550 (1929-08-01), Kitto
patent: 1740651 (1929-12-01), Hueter
patent: 1768473 (1930-06-01), Gaty
patent: 1852064 (1932-04-01), Sykes
patent: 1952357 (1934-03-01), Blumlein et al.
patent: 2006453 (1935-07-01), Harrison
patent: 3060282 (1962-10-01), Duncan
patent: 3093207 (1963-06-01), Bozak
patent: 3111187 (1963-11-01), Barlow
patent: 3125647 (1964-03-01), Rouy
patent: 3347335 (1967-10-01), Watters et al.
patent: 3674109 (1972-07-01), Murase
patent: 3834486 (1974-09-01), Tsuge et al.
patent: 3858680 (1975-01-01), Tsuge et al.
patent: 4020299 (1977-04-01), Garner et al.
patent: 4029171 (1977-06-01), Manger

Affiliated with

Also associated with

Rating

Loudspeaker having a laminate diaphragm of three layers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Loudspeaker having a laminate diaphragm of three layers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Loudspeaker having a laminate diaphragm of three layers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2337353