3506533

Information

• Patent Grant
• 3506533

• References
• Source

• Patent Number

  3,506,533

• Date Filed

  Not available

• Date Issued

  Tuesday, April 14, 1970
  54 years ago

• CPC

  • E04B1/8227 - screens ; Arrangements of sound-absorbing elements
  • B29C44/569 - Shaping and joining components with different densities or hardness
  • B32B27/00 - Layered products comprising a layer of synthetic resin
  • E04B2001/8245 - Machines for manufacturing, shaping, piercing or filling sound insulating elements
  • E04B2001/8414 - with non-planar face
  • E04B2001/8461 - layered
  • E04B2001/8476 - with acoustical cavities, with or without acoustical filling
  • E04B2001/848 - the cavities opening onto the face of the element
  • E04B2001/849 - Groove or slot type openings
  • Y10T156/1023 - Surface deformation only [e.g., embossing]
  • Y10T428/24446 - Wrinkled, creased, crinkled or creped
  • Y10T428/24496 - Foamed or cellular component
  • Y10T428/2457 - Parallel ribs and/or grooves
  • Y10T428/24999 - Inorganic

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 156 - Adhesive bonding and miscellaneous chemical manufacture