Mat for Acoustic Apparatus

• US 20070227816A1
• Filed: 04/05/2005
• Published: 10/04/2007
• Est. Priority Date: 09/15/2004
• Status: Active Grant

• Current Assignee: Kazuo Uejima
• Original Assignee: Kazuo Uejima
• Inventors: Uejima, Kazuo
• Granted Patent: US 7,770,693 B2
• Time in Patent Office: Days
• 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 1a is formed by arranging plural grain pieces 2a of inexpensive silica gel in a single layer. When the mat 1a is disposed under an acoustic equipment, the grain pieces 2a 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. A mat for use with acoustic equipment, comprising:

a plurality of silica-gel grain pieces arranged in a single layer.

2. The mat for use with acoustic equipment according to claim 1,

wherein said grain pieces in adjoining relation are bonded to each other at their peripheries.

3. The mat for use with acoustic equipment according to claim 1,

wherein said grain pieces are arranged in a single layer as sandwiched between a flexible mesh substrate in a mesh-sheet form and a flexible thin-film adhesive substrate attached to said mesh substrate in a manner that each grain piece is located in each of the meshes of said mesh substrate and projected from said adhesive substrate.

4. The mat for use with acoustic equipment according to claim 3,

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

5. The mat for use with acoustic equipment according to claim 1, further comprising 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 for use with acoustic equipment according to claim 5,

wherein said case member comprises a pile weave towel cloth.

10. The mat for use with acoustic equipment according to any one of claims 1 to 9,

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

11. The mat for use with acoustic equipment according to any one of claims 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 for use with acoustic equipment according to any one of claims 1 to 9,

wherein said grain pieces comprise B-type silica gel.

7. A mat for use with acoustic equipment, comprising:

a plurality of silica-gel grain pieces arranged in a single layer and attached to each of the two sides of a flexible thin-film support substrate.

8. The mat for use with acoustic equipment according to claim 7,

wherein said support substrate comprises a double-sided tape.

9. The mat for use with acoustic equipment according to claim 8,

wherein said double-sided tape has a mesh configuration.