Patents
Sitemap › G10 - Musical instruments; Acoustics › G10K - Sound-producing devices; methods or devices for protecting against, or for damping, noise or other acoustic waves in general; Acoustics not otherwise provided for › G10K 13 - Cones, diaphragms, or the like, for emitting or receiving sound in general
Patents for G10K 13 - Cones, diaphragms, or the like, for emitting or receiving sound in general (442)
01/1996
01/09/1996US5483502 Method and apparatus for emitting high power acoustic waves using transducers
12/1995
12/20/1995EP0687895A2 Method of Straining a diaphragm and a device therefor
10/1995
10/05/1995EP0696155A4 Method and acoustic system for sonification of enclosed and open spaces
09/1995
09/19/1995US5452267 Midrange ultrasonic transducer
09/19/1995CA2037253C Method and apparatus for producing snow using ultrasonic waves
08/1995
08/29/1995US5446332 Ultrasonic transducer
08/15/1995US5442594 Rib stiffened sound wave projector plate
08/15/1995US5441062 Method and device for pickling the edge portions of a sheet immersed in a reactive solution, in particular a hot rolled sheet
08/08/1995CA2042575C Electroacoustic unit for generating high sonic and ultrasonic intensities in gases and interphases
08/03/1995WO1995020769A1 A passive sensor system using ultrasonic energy
08/03/1995CA2182193A1 A passive sensor system using ultrasonic energy
06/1995
06/29/1995DE4344519A1 Acoustic waveguide giving definite surface radiation or reception
06/07/1995EP0656232A1 Method for high power acoustic wave emission and corresponding transducer horns
07/1994
07/27/1994EP0450030B1 Electroacoustic unit for generating high sonic and ultrasonic intensities in gases and interphases
07/12/1994US5329072 Acoustic diaphragm
04/1994
04/06/1994EP0590799A2 Acoustic transducer
03/1994
03/29/1994US5299175 Electroacoustic unit for generating high sonic and ultra-sonic intensities in gases and interphases
12/1993
12/07/1993US5268538 Hemispherically wide-radiating-angle loudspeaker system
11/1993
11/11/1993WO1993022889A1 Method and acoustic system for sonification of enclosed and open spaces
10/1993
10/05/1993US5251188 Elongated-pattern sonic transducer
08/1993
08/31/1993US5241140 Speaker diaphragm
07/1993
07/22/1993DE4201360A1 Level measurement arrangement - contains vibrating rods on membrane coupling them to piezoelectric stimulation-detection arrangement
07/14/1993EP0551162A2 Ultrasonic wave generator and floating or suspended particle collecting apparatus using the same
07/10/1993CA2086951A1 Ultrasonic wave generator and floating or suspended particle collecting apparatus using the same
06/1993
06/15/1993US5220160 Adaptive fiber optic shock wave sensor
06/08/1993US5218575 Acoustic transducer
05/1993
05/26/1993EP0543685A1 Method and apparatus for etching edges of a hot rolled plate
04/1993
04/06/1993US5200666 Ultrasonic transducer
02/1993
02/09/1993US5185728 Omnidirectional ultrasonic transducer
12/1992
12/16/1992EP0518668A2 Hemispherically wide-radiating-angle loudspeaker system
12/15/1992CA1311423C Moulded speech transmitter
12/13/1992CA2070896A1 Hemispherically wide-radiating-angle loudspeaker system
10/1992
10/14/1992EP0508150A2 Loudspeaker with an element joining the suspension and the (built-in) seal
09/1992
09/22/1992US5149486 Method for manufacturing speaker vibration member
09/02/1992CN2114876U Adjustable multi-tone contactless electronic speaker
08/1992
08/06/1992WO1992002795A3 Ultrasonic transducer
05/1992
05/14/1992DE4035828A1 Ultrasonic transducer energy transfer monitoring - detecting capacitance value of capacitor provided between ultrasonic transducer and associated membrane
04/1992
04/07/1992US5102043 Method and apparatus for producing snow using ultrasonic waves
03/1992
03/24/1992US5099220 Waterproof flush mount marine horn assembly
02/1992
02/20/1992WO1992002795A2 Ultrasonic transducer
02/06/1992DE4120681A1 Ultraschallwandler Ultrasonic transducer
12/1991
12/11/1991EP0460246A1 Window for acoustic wave form and method for making
11/1991
11/13/1991EP0455837A1 Ultrasonic resonator
10/1991
10/09/1991EP0450030A1 Electroacoustic unit for generating high sonic and ultrasonic intensities in gases and interphases
04/1991
04/07/1991WO1991005331A1 Electroacoustic unit for generating high sonic and ultrasonic intensities in gases and interphases
03/1991
03/05/1991US4997705 Septa sandwiching core; underwater sonar systems
02/1991
02/27/1991EP0413861A1 Speech transmitter
12/1990
12/27/1990CA1278369C Acoustic transducer system
12/25/1990US4980873 Ultrasonic transducer with tensioned diaphragm and method
12/04/1990US4975965 Loudspeaker design
09/1990
09/25/1990US4959539 Sensor for acoustic vibrations in a fluid
04/1990
04/10/1990US4915099 Moulded speech transmitter
03/1990
03/06/1990US4907207 Ultrasound transducer having astigmatic transmission/reception characteristic
10/1989
10/11/1989EP0336086A2 Micromechanic sound generator
08/1989
08/09/1989EP0327486A2 Focal sonic or ultrasonic radiator to apply to high-intensity fluids
06/1989
06/15/1989WO1989005558A1 Ultrasonic transducer with tensioned diaphragm and method
05/1989
05/09/1989US4828907 Diaphragm for producing sound
04/1989
04/18/1989US4823041 Non-directional ultrasonic transducer
03/1989
03/29/1989EP0308931A2 Ultrasonic transducer with astigmatic transmission-reception characteristics
03/29/1989EP0308899A2 Ultrasonic transducer with astigmatic transmission-reception characteristics
10/1988
10/18/1988US4778027 Reverberation support assembly
09/1988
09/13/1988US4770918 Diaphragm for producing sound
09/06/1988US4768615 Acoustic transducer system
08/1988
08/16/1988CA1240761A1 Low viscous drag knock sensor
05/1988
05/03/1988US4742164 Bacterial cellulose-containing molding material having high dynamic strength
04/1988
04/27/1988EP0264830A2 Diaphragm for producing sound
04/20/1988EP0264131A2 Diaphragm for producing sound
01/1988
01/07/1988EP0251797A2 Non-directional ultrasonic transducer
11/1987
11/03/1987US4703656 Temperature independent ultrasound transducer device
09/1987
09/22/1987US4695986 Ultrasonic transducer component and process for making the same and assembly
04/1987
04/07/1987US4655316 Acoustic diaphragm
01/1987
01/06/1987CA1216243A1 Speaker support assembly
12/1986
12/23/1986US4630465 Low viscous drag knock sensor
12/17/1986EP0205355A1 Ultrasonic cleaning device for mechanical parts
11/1986
11/05/1986EP0200409A2 Moulded material comprising bacteria-produced cellulose
07/1986
07/22/1986US4602184 Apparatus for applying high frequency ultrasonic energy to cleaning and etching solutions
08/1985
08/27/1985US4537511 Apparatus for generating and radiating ultrasonic energy
07/1985
07/30/1985US4532383 Electroacoustic transducer having a variable thickness diaphragm
07/09/1985US4527657 Tapered tube impedance matching underwater voice communicator with bubble silencer
04/1985
04/24/1985EP0137924A2 Swinging and/or reflecting solid body for sound devices
10/1984
10/23/1984US4478309 Speaker equipped with diaphragm filled with foamed resin
09/1984
09/11/1984US4470479 Method of making metal coated foil speaker diaphragm
05/1984
05/29/1984US4451609 Flame-retarded acoustic diaphragm
05/02/1984EP0107136A2 Swinging bodies, in particular resonating bodies for sound generating devices
03/1984
03/13/1984US4437032 Sensor for distance measurement by ultrasound
02/1984
02/14/1984US4431873 Diaphragm design for a bender type acoustic sensor
01/1984
01/31/1984US4428996 Diaphragm for speaker
11/1983
11/15/1983CA1157142A1 Diaphragm design for a bender type acoustic sensor
09/1983
09/13/1983US4404315 Molding compositions and diaphragms, arm pipes and head shells molded therefrom
07/1983
07/12/1983US4392747 Display device structure
03/1983
03/30/1983EP0075302A1 Sensor for measuring distances using ultrasonic echos
01/1983
01/05/1983EP0068285A1 Speaker equipped with diaphragm filled with foamed resin
01/04/1983US4367426 Oxides of lead, lanthanum, zirconium and titanium
12/1982
12/07/1982US4362772 Vibratory elements for audio equipment
09/1982
09/28/1982US4351412 Diaphragm for acoustic instruments and method of manufacturing the same
08/1982
08/10/1982US4343376 Made from a mixture of post-chlorinated polyvinyl chloride and graphite
08/03/1982CA1128873A1 Loudspeaker coupler
07/1982
07/27/1982US4341838 Thermoplastic resin mixed with flaky graphite and carbon black
05/1982
05/18/1982US4330729 Locking support arrangement for a flexible sound-generating diaphragm
05/18/1982US4329876 Method and apparatus for acoustic scanning using bulk wave scattering of bulk waves by an acoustic grating
1 2 3 4 5