Mat for acoustic apparatus

• US 7,770,693 B2
• Filed: 04/05/2005
• Issued: 08/10/2010
• Est. Priority Date: 09/15/2004
• Status: Expired due to Fees

• Current Assignee: Kazuo Uejima
• Original Assignee: Kazuo Uejima
• Inventors: Uejima, Kazuo
• Primary Examiner(s): Donels; Jeffrey
• Assistant Examiner(s): Phillips; Forrest M
• Application Number:
  US11/662,316
• Publication Number:
  US 20070227816A1
• Time in Patent Office: 1,953 Days
• Field of Search: 181/294, 181/207, 181/208, 181/209, 181/284, 181/290, 428/116, 428/117, 428/118, 428/119, 428/120
• US Class Current: 181/294
• CPC Class Codes: F16F 1/3737 Planar, e.g. in sheet form vibration dampers comprising one or more constrained viscoelastic layers F16F9/306
• CPC Class Codes: F16F 9/30 with solid or semi-solid material, e.g. pasty masses, as damping medium in devices where rotary elements are damped by viscous shear effect only, any throttling effect being immaterial F16F9/12; where members moving with a rotating system are being damped F16F15/16
• CPC Class Codes: G11B 33/00 Constructional parts, details or accessories not provided for in the other groups of this subclass
• CPC Class Codes: H04R 23/00 Transducers other than those covered by groups H04R9/00 - H04R21/00 diaphragms for transducers of the distributed-mode type H04R7/045

Abstract

An acoustic equipment mat is formed by arranging plural grain pieces of inexpensive silica gel in a single layer. When the mat is disposed under an acoustic equipment, the grain pieces have their upper ends in point contact with a bottom or the like of the acoustic equipment and have their lower ends in point contact with the underlying floor or the like. Hence, the mat 1a is notably reduced in the area of contact with the acoustic equipment or the like, so as to reduce the reflection of vibrations. In addition, the mat 1a is capable of extremely quickly dissipating, in the atmosphere, the vibrations directly propagated to the upper-end side thereof and the vibrations indirectly propagated thereto as reflected by the lower-end side thereof.

Claims

1. An acoustic equipment vibration dissipating silica-gel grain mat, consisting of:

a constituent medium comprising opposing surfaces; and

a plurality of silica-gel grain pieces arranged in a single layer throughout said constituent medium, each of said grain pieces including peripheral surface portions, said peripheral surface portions extending above an adjacent surface portion of one of the constituent medium opposing surfaces so as to provide a vibration incident surface and below an adjacent surface portion of another of the constituent medium opposing surfaces so as to provide a vibration exit surface, said vibration incident and exit surfaces respectively forming direct contact surfaces for acoustic equipment and an acoustic equipment support surface.

2. The mat according to claim 1,

wherein said grain pieces are positioned in adjoining relation and are bonded to each other at their peripheries through connection with the constituent medium.

3. The mat according to claim 1,

wherein said grain pieces are arranged in a single layer in said constituent medium so that said grain pieces are sandwiched between said opposing surfaces of said constituent medium, said constituent medium comprising a flexible mesh substrate in a mesh-sheet form and a flexible thin-film adhesive substrate attached to said mesh substrate.

4. The mat according to claim 3,

wherein said mesh substrate comprises a mesh tape and said adhesive substrate comprises an adhesive bandage.

5. The mat according to claim 1, wherein said constituent medium comprises a case member formed of a flexible pile weave fabric,

wherein said grain pieces are arranged in a single layer and are each located in each of the meshes of a meshed ground structure of said pile weave fabric thereby locked in said case member by means of each pile portion.

6. The mat according to claim 5,

wherein said case member comprises a pile weave towel cloth.

10. The mat according to any one of claim 1 to 9,

wherein said silica-gel grain pieces are coated with a carbon coat.

11. The mat according to any one of claim 1 to 9,

wherein said grain pieces substantially have spherical shapes having diameters in the range of 1 mm to 10 mm.

12. The mat according to any one of claim 1 to 9,

wherein said grain pieces comprise B-type silica gel.

13. The mat according to claim 10,

wherein said grain pieces substantially have spherical shapes having diameters in the range of 1 mm to 10 mm.

14. The mat according to claim 10,

wherein said grain pieces comprise B-type silica gel.

15. The mat according to claim 11,

wherein said grain pieces comprise B-type silica gel.

7. An acoustic equipment vibration dissipating silica-gel grain mat consisting of:

a plurality of silica-gel grain pieces; and

a flexible thin-film support substrate comprising first and second side surfaces, said silica-gel grain pieces being attached to each of said first and second side surfaces and arranged in a single layer thereon, said silica-gel grain pieces forming respective direct contact surfaces for acoustic equipment and an acoustic equipment support surface.

8. The mat according to claim 7,

wherein said support substrate comprises a double-sided tape.

9. The mat according to claim 8,

wherein said double-sided tape has a mesh configuration.