Three-step heavy-duty stepladder

Information

  • Patent Grant
  • D1009304
  • Patent Number
    D1,009,304
  • Date Filed
    Monday, February 7, 2022
    2 years ago
  • Date Issued
    Tuesday, December 26, 2023
    10 months ago
  • US Classifications
    Field of Search
    • US
    • D25 62
    • D25 64
    • D25 65
    • D25 68
    • 182 165000
    • 182 022000
    • 182 180100
    • 182 194000
    • 182 021000
    • 182 093000
    • CPC
    • E06C1/393
    • E06C1/39
    • E06C1/387
    • E06C1/383
    • E06C1/32
    • E06C1/14
    • E06C1/381
  • International Classifications
    • 2504
    • Term of Grant
      15Years
Abstract
Description


FIG. 1 is a perspective view of a three-step heavy-duty stepladder showing our design;



FIG. 2 is a front elevation view thereof;



FIG. 3 is a rear elevation view thereof;



FIG. 4 is a left elevation view thereof;



FIG. 5 is a right elevation view thereof;



FIG. 6 is a top plan view thereof; and,



FIG. 7 is a bottom plan view thereof.


The broken lines in the drawings are included for the purpose of illustrating portions of the three-step heavy-duty ladder and form no part of the claimed design.


Claims
  • We claim the ornamental design for three-step heavy-duty stepladder, as shown and described.
US Referenced Citations (137)
Number Name Date Kind
2470053 Salisbury May 1949 A
2485413 Ross Oct 1949 A
2650014 Harrison Aug 1953 A
2865546 Shull Dec 1958 A
2899008 Larson Aug 1959 A
2957542 Rizzuto Oct 1960 A
3446310 Alfie May 1969 A
3625388 Golden et al. Dec 1971 A
3744591 Lucci et al. Jul 1973 A
4270463 Korzon Jun 1981 A
4452484 Pastor Jun 1984 A
4485892 Maloney Dec 1984 A
4502564 Kümmerlin et al. Mar 1985 A
4586586 Canals May 1986 A
4653713 Hamilton Mar 1987 A
4936463 Tiramani Jun 1990 A
4979590 Bailey Dec 1990 A
5035389 Wang Jul 1991 A
5052581 Christ et al. Oct 1991 A
5120013 Sweeney Jun 1992 A
5240214 Bimbaum Aug 1993 A
5337857 Spait Aug 1994 A
5370263 Brown Dec 1994 A
5421428 Ingles Jun 1995 A
5573081 Bartnicki et al. Nov 1996 A
5584357 Gugel Dec 1996 A
5613574 Melanson Mar 1997 A
5622010 Weber Apr 1997 A
5673885 Pham Oct 1997 A
5722507 Kain Mar 1998 A
5740883 Trank Apr 1998 A
5782314 Zeitler Jul 1998 A
5873433 Katz Feb 1999 A
5913380 Gugel Jun 1999 A
5967260 Spak Oct 1999 A
6012548 Kim Jan 2000 A
6098748 Harper, Jr. et al. Aug 2000 A
6347687 Alim Feb 2002 B1
6390237 Kim et al. May 2002 B1
6390238 Gibson May 2002 B1
6401862 Caron Jun 2002 B1
6427805 Gibson Aug 2002 B1
6443260 Katz Sep 2002 B1
6443261 Gibson Sep 2002 B1
6467577 Charlebois, Jr. Oct 2002 B1
6550579 Gibson Apr 2003 B2
6698699 Bailey Mar 2004 B1
6883529 Kvaternik Apr 2005 B2
6902034 Gibson et al. Jun 2005 B2
7000732 Briggs, Jr. Feb 2006 B1
7032711 Katz et al. Apr 2006 B1
7108103 Meeker Sep 2006 B2
7128187 Simpson Oct 2006 B2
D541432 Rapp Apr 2007 S
7204343 Seaman Apr 2007 B1
D548364 Skubic Aug 2007 S
D554771 Skubic Nov 2007 S
7370726 Chavez May 2008 B1
7415933 Sagol Aug 2008 B2
7648108 Peterson Jan 2010 B2
7861826 Meyers et al. Jan 2011 B2
7886872 Astor Feb 2011 B2
7931123 Moldthan Apr 2011 B2
7967111 Meyers et al. Jun 2011 B2
D642283 Ericksson Jul 2011 S
8186481 Moss et al. May 2012 B2
8272478 Astor Sep 2012 B2
8453796 Astor Jun 2013 B2
8579083 Astor Nov 2013 B2
8596454 Carlson Dec 2013 B1
8997931 Parker Apr 2015 B2
9309718 Matthew Apr 2016 B1
9428958 Ellis Aug 2016 B1
D766461 Moss et al. Sep 2016 S
D766462 Moss et al. Sep 2016 S
D777350 Moss et al. Jan 2017 S
9714541 Astor Jul 2017 B2
9714542 Harcz Jul 2017 B1
9850706 Astor Dec 2017 B2
D833643 Foley Nov 2018 S
10138680 Williams et al. Nov 2018 B2
D838386 Woodward Jan 2019 S
10184292 Latimer Jan 2019 B2
10208538 Astor Feb 2019 B2
10619416 Snell Apr 2020 B1
10633918 Wulfekotte Apr 2020 B2
10648234 Skubic May 2020 B2
D889689 Russell Jul 2020 S
10709238 Thompson Jul 2020 B1
D898944 Green Oct 2020 S
10801263 Dangrow Oct 2020 B2
D920541 Mittanck May 2021 S
D921224 Mittanck Jun 2021 S
11167407 McGee Nov 2021 B2
11220862 Skubic et al. Jan 2022 B2
D972169 Yan Dec 2022 S
11655676 Foley May 2023 B2
20020017430 Rosko Feb 2002 A1
20020017431 Gibson Feb 2002 A1
20020104709 Hines Aug 2002 A1
20030029676 Gibson Feb 2003 A1
20040000449 Meeker Jan 2004 A1
20040007424 Simpson Jan 2004 A1
20060006024 Till Jan 2006 A1
20070120028 Kane May 2007 A1
20070163837 Dyer Jul 2007 A1
20070181369 Gibson Aug 2007 A1
20070193829 Aster Aug 2007 A1
20070240935 O'Brien Oct 2007 A1
20070284191 Astor Dec 2007 A1
20070284192 Meyers Dec 2007 A1
20090078504 Astor Mar 2009 A1
20090272602 Kocher Nov 2009 A1
20100224445 Moss et al. Sep 2010 A1
20110024234 Lin Feb 2011 A1
20120211305 Moss et al. Aug 2012 A1
20120217093 Latimer Aug 2012 A1
20120228059 Lampe et al. Sep 2012 A1
20130146394 Astor Jun 2013 A1
20130270037 Pensieri Oct 2013 A1
20140054112 Astor Feb 2014 A1
20140224585 Russell Aug 2014 A1
20140326538 Najey Nov 2014 A1
20140332316 Tiber et al. Nov 2014 A1
20150014094 Brooks Jan 2015 A1
20150090533 Moss et al. Apr 2015 A1
20150159434 Leng Jun 2015 A1
20160024845 Coe Jan 2016 A1
20160038789 Cheyne Feb 2016 A1
20160177626 Miller Jun 2016 A1
20160348434 Williams Dec 2016 A1
20170251826 Sclare Sep 2017 A1
20170328131 Woodward et al. Nov 2017 A1
20200170419 Sclare et al. Jun 2020 A1
20200270946 Lawery Aug 2020 A1
20210037989 Rogers Feb 2021 A1
20230119062 Zhu Apr 2023 A1
Foreign Referenced Citations (4)
Number Date Country
2007101150 Jan 2008 AU
2777593 Oct 1999 FR
2816984 May 2002 FR
WO 2010084135 Jul 2010 WO
Non-Patent Literature Citations (5)
Entry
Polder® 3-Step Ladder. Crate and Barrel, http://www.crateandbarrel.com/polder-3-step-ladder/s451498, accessed May 6, 2015.
Cosco Signature Series 6 ft. Premium Aluminum Step Ladder, Home Depot, http://www.homedepot.com/p/Cosco-Signature-Series-6-ft-Premium-Aluminum-Step-Ladder-2061AABLD/203642157, accessed May 6, 2015.
Werner 4 ft. Fiberglass Platform Step Ladder with 375 lb. Load Capacity Type IAA Duty Rating. Home Depot, http://www.homedepot.com/p/Werner-4-ft-Fiberglass-Platform-Step-Ladder-with-375-lb-Load-Capacity-Type-IAA-Duty-Rating-P7404/203134335, accessed May 6, 2015.
Application and File History for U.S. Appl. No. 14/617,441, filed Feb. 9, 2015. Inventors: Jeff Skubic et al.
Application and File History for U.S. Appl. No. 16/834,561, filed Mar. 30, 2020. Inventors: Jeff Skubic et al.