2568040

Information

• Patent Grant
• 2568040

• References
• Source

• Patent Number

  2,568,040

• Date Filed

  Not available

• Date Issued

  Tuesday, September 18, 1951
  73 years ago

• CPC

  • C03B33/04 - Cutting or splitting in curves, especially for making spectacle lenses
  • B23Q1/4804 - a single rotating pair followed perpendicularly by a single sliding pair
  • B23Q27/003 - of conical non-circular section manufactured by an apparatus with a first rotational cutting vector and a second linear feed vector, intersecting the first vector
  • B24B13/046 - using a pointed tool or scraper-like tool
  • Y10T82/148 - Pivoted tool rest

• US Classifications

  • 451 - Abrading
  • 082 - Turning
  • 125 - Stone working
  • 351 - Optics: eye examining, vision testing and correcting