Surface acoustic transducer

• US 9,998,832 B2
• Filed: 04/11/2017
• Issued: 06/12/2018
• Est. Priority Date: 11/16/2015
• Status: Active Grant

• Current Assignee: Bongiovi Acoustics LLC
• Original Assignee: Bongiovi Acoustics LLC
• Inventors: Bongiovi, Anthony, Hamelink, Lawrence Robert, Servis, Brian K., Bielski, John Robert
• Primary Examiner(s): Le, Huyen D
• Application Number:
  US15/484,428
• Publication Number:
  US 20170289695A1
• Time in Patent Office: 427 Days
• Field of Search: 381 87, 381152, 381386, 381395, 381396, 381398, 381403, 381404, 381412, 381417, 381420, 381431, 3403881, 181150, 181199
• CPC Class Codes: G10K 11/004 Mounting transducers, e.g. provided with mechanical moving or orienting device mountings specially adapted to a particular sound-producing device, see the preceding groups G10K1/00 - G10K9/00, e.g. G10K1/26, G10K1/28, G10K9/22; arrangements of sonic watch equipment on submarines B63G8/39; buoys B63B22/00
• CPC Class Codes: G10K 11/178 by electro-acoustically regenerating the original acoustic waves in anti-phase
• CPC Class Codes: G10K 11/1787 General system configurations
• CPC Class Codes: G10K 2210/118 Panels, e.g. active sound-absorption panels or noise barriers
• CPC Class Codes: G10K 2210/1281 Aircraft, e.g. spacecraft, airplane or helicopter
• CPC Class Codes: G10K 2210/3229 Transducers
• CPC Class Codes: H04R 1/028 associated with devices performing functions other than acoustics, e.g. electric candles
• CPC Class Codes: H04R 1/06 Arranging circuit leads; Relieving strain on circuit leads
• CPC Class Codes: H04R 1/227 using transducers reproducing the same frequency band
• CPC Class Codes: H04R 11/02 Loudspeakers
• CPC Class Codes: H04R 2201/021 Transducers or their casings adapted for mounting in or to a wall or ceiling
• CPC Class Codes: H04R 2209/027 Electrical or mechanical reduction of yoke vibration
• CPC Class Codes: H04R 2400/07 Suspension between moving magnetic core and housing
• CPC Class Codes: H04R 2440/05 Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
• CPC Class Codes: H04R 2440/07 Loudspeakers using bending wave resonance and pistonic motion to generate sound
• CPC Class Codes: H04R 2499/13 Acoustic transducers and sound field adaptation in vehicles
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F
• CPC Class Codes: H04R 7/04 Plane diaphragms
• CPC Class Codes: H04R 7/045 using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
• CPC Class Codes: H04R 9/025 Magnetic circuit
• CPC Class Codes: H04R 9/043 : Inner suspension or damper, e.g. spider outer suspension or surround H04R7/16
• CPC Class Codes: H04R 9/06 : Loudspeakers
• CPC Class Codes: H04R 9/063 : using a plurality of acoustic drivers H04R1/24 and H04R1/403 take precedence
• CPC Class Codes: H04R 9/066 : using the principle of inertia

Abstract

The present invention provides for a surface acoustic transducer optimally structured to produce sound within an aircraft cabin by vibrating the interior cabin walls. Specifically, the surface acoustic transducer comprises a primary assembly comprising a voice coil assembly having a voice coil former and wire, and a transducer housing for retaining said primary assembly and a magnet therein such in movable relations. The present surface acoustic transducer may further include a spider structured to provide an improved excursion. An external housing may additionally be provided comprising a rigid retaining wall for protecting the surface acoustic transducer from potential externally applied forces and a malleable excursion cover allowing for an excursion of the primary assembly thereof.

Claims

1. A surface acoustic transducer assembly comprising:

a magnet providing a magnetic field;

a primary assembly comprising at least a voice coil assembly;

a transducer housing cooperatively structured for retaining said primary assembly and magnet therein, such that said primary assembly is permitted to move outwardly from said magnet along a linear path of excursion, when the primary assembly enters an excited state;

an external housing comprising at least a retaining wall and an excursion cover cooperatively structured to retain said transducer housing and primary assembly therein,

said retaining wall formed of a rigid composition and protectively enclosing said transducer therein and

said excursion cover malleably attached to a proximal end of said retaining wall via a plurality of contact portions, facilitating the excursion of said primary assembly outwards from said external housing.

2. The surface acoustic transducer assembly of claim 1 wherein said primary assembly further comprises a coupler ring attached to a proximal end of said primary assembly.

3. The surface acoustic transducer assembly of claim 1 further comprising a top shunt plate disposed in juxtaposing relations between said magnet and said primary assembly.

4. The surface acoustic transducer assembly of claim 1 wherein said voice coil assembly further comprises a voice coil former and a voice coil wire wound in surrounding relation to said voice coiler former.

5. The surface acoustic transducer assembly of claim 4 wherein an exterior edge of said top shunt plate is disposed in substantially overlying relations relative to said voice coil wire, when the surface acoustic transducer is in a rest state.

6. The surface acoustic transducer assembly of claim 4 wherein an exterior edge of said magnet is disposed in partially overlying relations relative to said voice coil wire, when the surface acoustic transducer is in a rest state.

7. The surface acoustic transducer assembly of claim 1 further comprising a spider for damping the movement of said primary assembly, said spider disposed in juxtaposing surrounding relations relative to said primary assembly.

8. The surface acoustic transducer assembly of claim 1 wherein said transducer housing further comprises a flange disposed in surrounding relations to said primary assembly, said flange comprising a terminal attachment structured to receive power from a power source and relay the power to said voice coil assembly.

9. The surface acoustic transducer assembly of claim 1 wherein said transducer housing comprises a yoke coupled in surrounding relations relative to a distal portion of said primary assembly.

10. The surface acoustic transducer assembly of claim 1 wherein said voice coil comprises a wattage of between 20 W to 30 W.

11. The surface acoustic transducer assembly of claim 1 wherein said transducer housing comprises a diameter of between 25 mm to 30 mm.

12. The surface acoustic transducer assembly of claim 1 wherein said excursion cover is attached to a proximal end of said retaining wall via three contact portions.

13. The surface acoustic transducer assembly of claim 1 wherein said excursion cover comprises a spiral structure.

14. A surface acoustic transducer assembly comprising:

a magnet and a primary assembly;

a transducer housing cooperatively structured for retaining said primary assembly and magnet therein, such that said primary assembly is permitted to move outwardly from said magnet along a linear path of excursion, when the primary assembly enters an excited state;

an external housing comprising a retaining wall and an excursion cover cooperatively structured to retain said transducer housing and primary assembly therein;

said retaining wall formed of a rigid composition and protectively enclosing said transducer housing therein; and

,

said excursion cover malleably attached to a proximal end of said retaining wall via a plurality of contact portions, to allow for the excursion of said primary assembly outwards from said external housing.

15. The surface acoustic transducer assembly of claim 14 further comprising a top shunt plate coupled to a proximal surface of said magnet, wherein an exterior edge of said top shunt plate is disposed in overlying relations relative to a voice coil assembly of said primary assembly, when then surface acoustic transducer is in a rest state.

16. The surface acoustic transducer assembly of claim 15 wherein an exterior edge of said magnet is disposed in partially overlying relations relative to a voice coil wire of said voice coil assembly, when then surface acoustic transducer is in a rest state.

17. A surface acoustic transducer comprising:

a magnet and a primary assembly;

a transducer housing for retaining said magnet and said primary assembly therein, said primary assembly disposed in movable relation to said magnet, outwardly from said magnet along a linear path of excursion, when the primary assembly enters an excited state;

said primary assembly having a cylindrical profile protruding partially outward from said transducer housing, and comprising a voice coil assembly having a voice coil former and a voice coil wire wound in surrounding relations to said voice coil former;

said magnet providing a magnetic field and coupled to a distal end interior to said transducer housing;

a spider for damping the movement of said primary assembly, said spider disposed in juxtaposing surrounding relations relative to said primary assembly and being secured by said transducer housing; and

,

an external housing disposed in protective, surrounding relation to said transducer housing and primary assembly, said external housing comprising at least a retaining wall formed of a rigid composition and an excursion cover malleably attached to a proximal end of said retaining wall via a plurality of contact portions, to allow for the excursion of said primary assembly outwards from said external housing.

18. The surface acoustic transducer of claim 17 further comprising a top shunt plate coupled to a proximal surface of said magnet, wherein an exterior edge of said top shunt plate is disposed in overlying relation to said voice coil wire when the surface acoustic transducer is in a rest state.

19. The surface acoustic transducer of claim 18 wherein an exterior edge of said magnet is disposed in partially overlying relation to said voice coil wire when then surface acoustic transducer is in a rest state.