3395438

Information

• Patent Grant
• 3395438

• References
• Source

• Patent Number

  3,395,438

• Date Filed

  Not available

• Date Issued

  Tuesday, August 6, 1968
  56 years ago

• CPC

  • B21D11/08 - Bending by altering the thickness of part of the cross-section of the work
  • B21D11/206 - Curving corrugated sheets
  • B21D13/02 - by pressing
  • E04C2/32 - formed of corrugated or otherwise indented sheet-like material composed of such layers with or without layers of flat sheet-like material
  • E04D3/30 - of metal
  • E04D3/40 - Slabs or sheets locally modified for auxiliary purposes
  • Y10T428/12278 - Same structure at both ends of plural taper
  • Y10T428/12354 - Nonplanar, uniform-thickness material having symmetrical channel shape or reverse fold [e.g., making acute angle, etc.]
  • Y10T428/12417 - Intersecting corrugating or dimples not in a single line [e.g., waffle form, etc.]

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 052 - Static structures