| |
 |
|
Class Information
Number: 181/174
Name: Acoustics > Diaphragm > Particular shape > Variable thickness
Description: Subject matter wherein the thickness of the vibratable partition constituting the diaphragm varies across its surface.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7280668 |
Ceramic metal matrix diaphragm for loudspeakers |
Oct. 9, 2007 |
| 7275620 |
Square speaker |
Oct. 2, 2007 |
| 6889796 |
Loudspeaker suspension |
May. 10, 2005 |
| 6863153 |
Loudspeaker diaphragm |
Mar. 8, 2005 |
| 6757404 |
Loud speaker, diaphragm and process for making the diaphragm |
Jun. 29, 2004 |
| 6493452 |
Speaker unit |
Dec. 10, 2002 |
| 6026929 |
High frequency radially arcuated center speaker cone with variable thickness |
Feb. 22, 2000 |
| 5744761 |
Diaphragm-edge integral moldings for speakers and acoustic transducers comprising same |
Apr. 28, 1998 |
| 5714722 |
Loudspeaker |
Feb. 3, 1998 |
| 5693917 |
Planar diaphragm loudspeaker |
Dec. 2, 1997 |
| 5619019 |
Damper for loudspeaker |
Apr. 8, 1997 |
| 4949806 |
Headset for underwater use |
Aug. 21, 1990 |
| 4939784 |
Loudspeaker structure |
Jul. 3, 1990 |
| 4928312 |
Acoustic transducer |
May. 22, 1990 |
| 4847908 |
Loudspeaker having a two-part diaphragm for use as a car loudspeaker |
Jul. 11, 1989 |
| 4532383 |
Electroacoustic transducer having a variable thickness diaphragm |
Jul. 30, 1985 |
| 4395597 |
Speaker diaphragm assembly and a method of manufacturing the same |
Jul. 26, 1983 |
| 4384174 |
Moving voice coil loudspeaker, peripheral diaphragm support, diaphragm construction, bobbin to diaphragm reinforcement |
May. 17, 1983 |
| 4257325 |
Mouting of a substantially planar diaphragm defining a sound transducer |
Mar. 24, 1981 |
| 4239090 |
High accuracy bass reproducer device |
Dec. 16, 1980 |
| 4184563 |
Planar diaphragm and supporting frame assembly |
Jan. 22, 1980 |
| 4183422 |
Underwater communications device |
Jan. 15, 1980 |
| 4163876 |
Electro-acoustic transducer with variable thickness foam surfaced diaphragm |
Aug. 7, 1979 |
| 4132872 |
Ribbed conical-central dome diaphragm with tapered thickness components |
Jan. 2, 1979 |
| 4086450 |
Variable thickness cone for a dynamic speaker and quality control inspection method therefor |
Apr. 25, 1978 |
| 4013846 |
Piston loudspeaker |
Mar. 22, 1977 |
| 4003449 |
Planar diaphragm |
Jan. 18, 1977 |
|
|
|
