TREA

for flattening the ends of corrugated sheets

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  • CPC
  • B21D22/027
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING METAL B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing

Current Industry

B21D22/027for flattening the ends of corrugated sheets
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Heat exchanger folded from a single metal sheet and having two sepa...
    • Patent number 9,234,708
    • Issue date Jan 12, 2016
    • NFT Nanofiltertechnik Gesellschaft mit beschränkter Haftung
    • Daniel Krohn
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Vehicle bed edge and manufacturing process
    • Patent number 6,799,792
    • Issue date Oct 5, 2004
    • Pullman Industries, Inc.
    • Joseph J. Jurica
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Method and apparatus for flattening corrugated heat exchanger plate
    • Patent number 4,434,637
    • Issue date Mar 6, 1984
    • Caterpillar Tractor Co.
    • John M. Bailey
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for flattening corrugated heat exchanger plates
    • Patent number 4,346,582
    • Issue date Aug 31, 1982
    • Caterpillar Tractor Co.
    • John M. Bailey
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for manufacturing metallic ribs on sheet stock
    • Patent number 4,109,503
    • Issue date Aug 29, 1978
    • Jean Francon
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of manufacturing a heat exchanger body for recuperative exch...
    • Patent number 4,099,928
    • Issue date Jul 11, 1978
    • Aktiebolaget Carl Munters
    • Per S. Norback
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Method of manufacturing a heat exchanger steel
    • Patent number 4,022,050
    • Issue date May 10, 1977
    • Caterpillar Tractor Co.
    • Billy J. Davis
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3829945
    • Patent number 3,829,945
    • Issue date Aug 20, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3794209
    • Patent number 3,794,209
    • Issue date Feb 26, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3194283
    • Patent number 3,194,283
    • Issue date Jul 13, 1965
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3174322
    • Patent number 3,174,322
    • Issue date Mar 23, 1965
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3144069
    • Patent number 3,144,069
    • Issue date Aug 11, 1964
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3031358
    • Patent number 3,031,358
    • Issue date Apr 24, 1962
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2975821
    • Patent number 2,975,821
    • Issue date Mar 21, 1961
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2753918
    • Patent number 2,753,918
    • Issue date Jul 10, 1956
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2638958
    • Patent number 2,638,958
    • Issue date May 19, 1953
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2228236
    • Patent number 2,228,236
    • Issue date Jan 7, 1941
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2150890
    • Patent number 2,150,890
    • Issue date Mar 14, 1939
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1704326
    • Patent number 1,704,326
    • Issue date Mar 5, 1929
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1462474
    • Patent number 1,462,474
    • Issue date Jul 24, 1923
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1462475
    • Patent number 1,462,475
    • Issue date Jul 24, 1923
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents