Sound dampening composition

• US 3,020,184 A
• Filed: 09/30/1955
• Issued: 02/06/1962
• Est. Priority Date: 09/30/1955
• Status: Expired due to Term

• Current Assignee: Harold J. Zinaman, Richard H. Cubberley, Vincent C. Harold Jr
• Original Assignee: Harold J. Zinaman, Richard H. Cubberley, Vincent C. Harold Jr
• Inventors: Cubberley, Richard H., Harold, Vincent C. Jr., Zinaman, Harold J.
• Application Number:
  US03/537,702
• Time in Patent Office: 2,321 Days
• US Class Current: 428/138
• CPC Class Codes: B27N 3/00 Manufacture of substantially flat articles, e.g. boards, from particles or fibres
• CPC Class Codes: B60R 13/0815 Acoustic or thermal insulation of passenger compartments wall or roof liners integrating the insulating function B60R13/02; insulating floor mats or carpets B60N3/04
• CPC Class Codes: E04B 1/8409 sheet-shaped
• CPC Class Codes: E04B 2001/8461 layered
• CPC Class Codes: E04B 2001/8466 with an intermediate layer formed of lines or dots of elastic material
• CPC Class Codes: E04B 2001/8471 with non-planar interior transition surfaces between layers, e.g. faceted, corrugated
• CPC Class Codes: E04B 2001/8476 with acoustical cavities, with or without acoustical filling
• CPC Class Codes: Y10T 428/24331 including nonapertured component
• CPC Class Codes: Y10T 428/24826 Spot bonds connect components
• CPC Class Codes: Y10T 428/31815 Of bituminous or tarry residue
• CPC Class Codes: Y10T 428/31826 Of natural rubber

Claims

1. A SOUND DAMPENING MEMBER ADAPTED TO BE ADHERED TO THE SURFACE OF A VIBRATORY METAL OBJECTED FOR DAMPENING THE VIBRATIONS THEREOF COMPRISING A SANDWICH OF TWO LAYERS OF FLEXIBLE FELT WITH A THIRD CONRINOUS LAYER THERE BETWEEN, SAID THIRD LAYER CONTAININIG ROWS OF HOLES THERIN AND ADHERED TO THE OTHER TWO LAYERS BY NARROW PARALLEL STRIPS OF ADHESIVE LOCATED BETWEEN THE ROWS OF HOLES AND ON BOTH SIDES OF SAID THIRD LAYER, THE ADHESIVE SRTIPS ON ONE SIDE OF SAID THIRD LAYER BEING SUBSTANTIALLY IN THE SAME AREA AS SAID ADHESIVE STRIP ON THE OTHE SIDE OF SAID THIRD LAYER, ALL OF SAID LAYERS BEING IN CONTACT AT THE STRIPS OF ADHESIVE BUT EACH LAYER BEING SEPARATED FROM EACH OTHER IN THE AREA BETWEEN THE STRIPS OF ADHESIVE.