Step drill

Information

  • Patent Grant
  • D1069871
  • Patent Number
    D1,069,871
  • Date Filed
    Friday, September 1, 2023
    2 years ago
  • Date Issued
    Tuesday, April 8, 2025
    8 months ago
  • Inventors
    • Liao; Jen-Tsung
  • Original Assignees
  • Examiners
    • Palasik; Patricia A
    Agents
    • Best & Flanagan LLP
  • US Classifications
    Field of Search
    • US
    • D08 20
    • D08 70
    • D08 86
    • D15 132
    • D15 138
    • D15 139
    • D15 140
    • CPC
    • B23B51/0081
    • B23B51/009
    • B23B51/02
    • B23B35/00
    • B27G15/00
    • Y10T408/902
    • Y10T408/9097
    • Y10T408/90467
  • International Classifications
    • 1509
    • Term of Grant
      15Years
Abstract
Description


FIG. 1 is a perspective view of a step drill showing my new design;



FIG. 2 is a front view thereof;



FIG. 3 is a rear view thereof;



FIG. 4 is a left view thereof;



FIG. 5 is a right view thereof;



FIG. 6 is a top view thereof; and,



FIG. 7 is a bottom view thereof.


Claims
  • The ornamental design for a step drill as shown and described.
US Referenced Citations (16)
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3945069 Cecil Mar 1976 A
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D526670 Ibey Aug 2006 S
D872783 Parendo Jan 2020 S
D881241 Parendo Apr 2020 S
D892183 Parendo Aug 2020 S
D936117 Allen Nov 2021 S
D1033191 Bailey Jul 2024 S
D1050206 Li Nov 2024 S
20120195704 White Aug 2012 A1
20140363244 Allen Dec 2014 A1
20190329331 Parendo Oct 2019 A1
20210197295 Ward Jul 2021 A1
20220371105 Novak Nov 2022 A1
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Foreign Referenced Citations (3)
Number Date Country
2394197 Apr 2004 GB
2419555 May 2006 GB
WO-2012167448 Dec 2012 WO
Non-Patent Literature Citations (1)
Entry
https://www.steelvisiontools.com/products/5pc-cobalt-stepped-drill-bit-set/ (Year: 2022).