TREA

annularly-ribbed tubes

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Industry

  • CPC
  • B21C37/24
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for Manufacture of tubes of special shape

Current Industry

B21C37/24annularly-ribbed tubes
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Method of making a coated heat exchanger with tubes and fins
    • Patent number 4,970,770
    • Issue date Nov 20, 1990
    • Flakt, AB
    • Gosta Jansson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for producing by welding a finned heat exchanger pipe
    • Patent number 4,856,165
    • Issue date Aug 15, 1989
    • Man Technologie GmbH
    • Gunter Reuchlein
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Spiral expanding bullet
    • Patent number 4,847,989
    • Issue date Jul 18, 1989
    • Burr Oak Tool & Gauge Company
    • Lawrence A. Franks
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for belling and expanding coils
    • Patent number 4,815,185
    • Issue date Mar 28, 1989
    • Carrier Corporation
    • Kenneth P. Gray
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for belling and expanding coils
    • Patent number 4,745,678
    • Issue date May 24, 1988
    • Carrier Corporation
    • Kenneth P. Gray
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of making an internally grooved and expanded tubular heat ex...
    • Patent number 4,706,355
    • Issue date Nov 17, 1987
    • Q-dot Corporation
    • John P. Kuhns
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Arrangement for drawing transverse ribs
    • Patent number 4,685,204
    • Issue date Aug 11, 1987
    • Gea Luftkuehlergesellschaft Happel GmbH & Co.
    • Heinrich Schulenberg
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for pulling transverse fins onto a plurality of pipes
    • Patent number 4,407,064
    • Issue date Oct 4, 1983
    • Balcke-Durr Aktiengesellschaft
    • Peter Denner
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Fin and tube assembly and a method of making the assembly
    • Patent number 4,269,267
    • Issue date May 26, 1981
    • Societe Anonyme Francaise du Ferodo
    • Jean-Paul Labrande
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method for bonding a heat exchanger fin to a tube
    • Patent number 4,192,052
    • Issue date Mar 11, 1980
    • E. I. Du Pont de Nemours and Company
    • Robert D. MacDonald
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method of affixing surface enlarging members in the form of coheren...
    • Patent number 4,025,035
    • Issue date May 24, 1977
    • Granges Essem Aktiebolag
    • Karl Gunnar Jonason
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Apparatus for affixing surface enlarging members in the form of coh...
    • Patent number 3,960,308
    • Issue date Jun 1, 1976
    • Karl Gunnar Jonason
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    3813751
    • Patent number 3,813,751
    • Issue date Jun 4, 1974
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3718960
    • Patent number 3,718,960
    • Issue date Mar 6, 1973
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3546763
    • Patent number 3,546,763
    • Issue date Dec 15, 1970
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3512244
    • Patent number 3,512,244
    • Issue date May 19, 1970
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3467180
    • Patent number 3,467,180
    • Issue date Sep 16, 1969
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3432905
    • Patent number 3,432,905
    • Issue date Mar 18, 1969
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3433300
    • Patent number 3,433,300
    • Issue date Mar 18, 1969
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3373803
    • Patent number 3,373,803
    • Issue date Mar 19, 1968
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3358492
    • Patent number 3,358,492
    • Issue date Dec 19, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3345726
    • Patent number 3,345,726
    • Issue date Oct 10, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3256593
    • Patent number 3,256,593
    • Issue date Jun 21, 1966
    • D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
  • Information Patent Grant

    3216095
    • Patent number 3,216,095
    • Issue date Nov 9, 1965
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3007237
    • Patent number 3,007,237
    • Issue date Nov 7, 1961
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3004328
    • Patent number 3,004,328
    • Issue date Oct 17, 1961
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    2977918
    • Patent number 2,977,918
    • Issue date Apr 4, 1961
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2948054
    • Patent number 2,948,054
    • Issue date Aug 9, 1960
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2827102
    • Patent number 2,827,102
    • Issue date Mar 18, 1958
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2809421
    • Patent number 2,809,421
    • Issue date Oct 15, 1957
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents