TREA

for bearings

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Industry

  • CPC
  • B21H1/16
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING B21H1/00Making articles shaped as bodies of revolution

Current Industry

B21H1/16for bearings
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Powder metallurgy production of spherical articles, such as bearing...
    • Patent number 4,232,436
    • Issue date Nov 11, 1980
    • Textron Inc.
    • William J. Chmura
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Forming roll for rolling cylindrical bodies from cylindrical rod st...
    • Patent number 4,084,303
    • Issue date Apr 18, 1978
    • Helipebs Limited
    • Kenneth Charles Skinner
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3731511
    • Patent number 3,731,511
    • Issue date May 8, 1973
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3543553
    • Patent number 3,543,553
    • Issue date Dec 1, 1970
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3503237
    • Patent number 3,503,237
    • Issue date Mar 31, 1970
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3486358
    • Patent number 3,486,358
    • Issue date Dec 30, 1969
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3466910
    • Patent number 3,466,910
    • Issue date Sep 16, 1969
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2344147
    • Patent number 2,344,147
    • Issue date Mar 14, 1944
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2014203
    • Patent number 2,014,203
    • Issue date Sep 10, 1935
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1449483
    • Patent number 1,449,483
    • Issue date Mar 27, 1923
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1446447
    • Patent number 1,446,447
    • Issue date Feb 27, 1923
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents