3525417

Information

• Patent Grant
• 3525417

• References
• Source

• Patent Number

  3,525,417

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1970
  54 years ago

• CPC

  • F16F1/3737 - Planar
  • E01B1/001 - Track with ballast
  • E01B9/68 - Pads or the like
  • E01B9/683 - layered or composite
  • E01B9/685 - characterised by their shape
  • E01B19/003 - Means for reducing the development or propagation of noise
  • E04B1/86 - slab-shaped
  • E04C2/324 - with incisions or reliefs in the surface
  • F16F1/376 - having projections, studs, serrations or the like on at least one surface
  • F16F3/0873 - of the same material or the material not being specified
  • E01B9/686 - with textured surface
  • E01B9/688 - with internal cavities
  • E04B2001/8414 - with non-planar face
  • E04B2001/8461 - layered
  • E04B2001/8471 - with non-planar interior transition surfaces between layers
  • E04B2001/8476 - with acoustical cavities, with or without acoustical filling
  • Y10T428/24157 - Filled honeycomb cells [e.g., solid substance in cavities, etc.]
  • Y10T428/24182 - Inward from edge of web or sheet
  • Y10T428/24562 - Interlaminar spaces
  • Y10T428/24744 - Longitudinal or transverse tubular cavity or cell

• US Classifications

  • 181 - Acoustics
  • 428 - Stock material or miscellaneous articles
  • D25 - Building units and construction elements