IP Library › Granted Patent US 12,403,538
Granted Patent B2
US 12,403,538 · App. 18/783,817 · Granted Sep 2, 2025

Hole saw

Inventors: Max R. Sawa (Palatine, IL); Geoffrey R. Piller (Grafton, WI); Kenneth D. Peterson (Little Suamico, WI); Travis J. DuMez (Port Washington, WI); James Ernest Pangerc (Pewaukee, WI)
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
B23B51/0467B23B51/0466B23B51/0426B23B2260/072Y10T408/895
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Quick Facts
Patent No.
US 12,403,538
App. No.
18/783,817
Granted
Sep 2, 2025
Kind
B2
Abstract

A hole saw is movable about a rotational axis in a cutting direction to cut into a workpiece. The hole saw includes a cylindrical body with a sidewall having a first end and a second end opposite the first end, a gullet formed in the sidewall between a leading surface, a trailing surface, and a bottom surface of the sidewall, and a support aperture formed in the sidewall. The gullet extends through the first end of the body. The support aperture is entirely surrounded by the sidewall. A majority of the support aperture circumferentially overlaps with the gullet. At least a portion of the support aperture is positioned closer than the bottom surface of the sidewall to the second end. The hole saw includes a cutting tooth coupled to the first end of the sidewall adjacent the gullet and an end cap coupled to the second end of the sidewall.

Claims (35)

1. A hole saw movable about a rotational axis in a cutting direction to cut into a workpiece, the hole saw comprising:

a cylindrical body including

a sidewall having a first end and a second end opposite the first end,

a gullet formed in the sidewall between a first surface and a second surface having a first portion and a second portion, the second portion extending between the first surface and the first portion of the second surface, the gullet extending through the first end of the sidewall, and

a support aperture formed in the sidewall, the support aperture entirely surrounded by the sidewall and having a parallelogram shape with a first side, a second side, a third side, and a fourth side, the first side of the support aperture being parallel with the second portion of the second surface of the sidewall, the support aperture positioned closer than the second portion of the second surface of the sidewall to the second end, at least one of the first side, the second side, the third side, and the fourth side oriented oblique to the rotational axis;

a cutting tooth coupled to the first end of the sidewall adjacent the second surface of the gullet; and

an end cap coupled to the second end of the sidewall,

wherein the first and second sides of the support aperture are parallel, and

wherein the third and fourth sides of the support aperture are parallel.

2. The hole saw of claim 1 , wherein the first, second, third, and fourth sides of the support aperture are connected by rounded corners.

3. The hole saw of claim 1 , wherein the support aperture has a rounded parallelogram shape.

4. The hole saw of claim 1 , wherein the second portion of the second surface of the sidewall is linear, and wherein the first side of the support aperture is linear.

5. The hole saw of claim 4 , wherein

a first arcuate surface is positioned between the first and third surfaces of the sidewall, and

a second arcuate surface is positioned between the second and third surfaces of the sidewall.

6. The hole saw of claim 1 , wherein

the support aperture has a height measured between the first and second sides and parallel to the rotational axis, and

the height of the support aperture is greater than a shortest distance between the second portion of the second surface of the sidewall and the first side of the support aperture measured parallel to the rotational axis.

7. A hole saw movable about a rotational axis in a cutting direction to cut into a workpiece, the hole saw comprising:

a cylindrical body including

a sidewall having a first end and a second end opposite the first end,

a gullet formed in the sidewall between a first surface and a second surface having a first portion and a second portion, the second portion extending between the first surface and the first portion of the second surface, the gullet extending through the first end of the sidewall, and

a support aperture formed in the sidewall, the support aperture entirely surrounded by the sidewall and having a parallelogram shape with a first side, a second side, a third side, and a fourth side, the first side of the support aperture being parallel with the second portion of the second surface of the sidewall, the support aperture positioned closer than the second portion of the second surface of the sidewall to the second end, at least one of the first side, the second side, the third side, and the fourth side oriented oblique to the rotational axis;

a cutting tooth coupled to the first end of the sidewall adjacent the second surface of the gullet; and

an end cap coupled to the second end of the sidewall,

wherein the second portion of the second surface of the sidewall is linear, and

wherein the first side of the support aperture is linear.

8. The hole saw of claim 7 , wherein the first, second, third, and fourth sides of the support aperture are connected by rounded corners.

9. The hole saw of claim 7 , wherein the support aperture has a rounded parallelogram shape.

10. The hole saw of claim 7 , wherein

a first arcuate surface is positioned between the first and third surfaces of the sidewall, and

a second arcuate surface is positioned between the second and third surfaces of the sidewall.

11. The hole saw of claim 7 , wherein

the support aperture has a height measured between the first and second sides and parallel to the rotational axis, and

the height of the support aperture is greater than a shortest distance between the second portion of the second surface of the sidewall and the first side of the support aperture measured parallel to the rotational axis.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 21, 2024
From: SAWA, MAX R.; PILLER, GEOFFREY R.; PETERSON, KENNETH D.; DUMEZ, TRAVIS J.; PANGERC, JAMES ERNEST
To: MILWAUKEE ELECTRIC TOOL CORPORATION
Reel/Frame 068957/0383 →
Continuity (6)
Continuation 18606157 · Mar 15, 2024
Continuation 18065305 · Dec 13, 2022
Division 16910166 · Jun 24, 2020
Division 15863253 · Jan 5, 2018
Provisional Application 62443317 · Jan 6, 2017
Related Publication 20240375193A1 · Nov 14, 2024
References Cited (203)
US 1505897A · Kikta · 1924 [cited by applicant]
US 2879036A · Wheeler · 1959 [cited by applicant]
US 3049033A · Benjamin et al. · 1962 [cited by applicant]
US 3080934A · Berscheid · 1963 [cited by applicant]
US 3387637A · Ferguson et al. · 1968 [cited by applicant]
US 3905718A · Luckenbill et al. · 1975 [cited by applicant]
US 4527638A · Sanchez et al. · 1985 [cited by applicant]
US D282369S · de Villiers · 1986 [cited by applicant]
US 4728231A · Kunimori et al. · 1988 [cited by applicant]
US 4744704A · Galvefors · 1988 [cited by applicant]
US 4802799A · Rachev · 1989 [cited by applicant]
US D303118S · Cox · 1989 [cited by applicant]
US 4984944A · Pennington, Jr. et al. · 1991 [cited by applicant]
US 5092716A · Omi · 1992 [cited by applicant]
US 5338135A · Noguchi et al. · 1994 [cited by applicant]
US 5451128A · Hattersley · 1995 [cited by applicant]
US 5452971A · Nevills · 1995 [cited by applicant]
US 5492187A · Neukirchen et al. · 1996 [cited by applicant]
US 5597274A · Behner · 1997 [cited by applicant]
US 5599145A · Reinauer et al. · 1997 [cited by applicant]
US 5651646A · Banke et al. · 1997 [cited by applicant]
US D391974S · Brutscher · 1998 [cited by applicant]
US D392297S · Brutscher · 1998 [cited by applicant]
US 5733074A · Stock et al. · 1998 [cited by applicant]
US 5743162A · Sundström · 1998 [cited by applicant]
US 5758561A · Curtsinger et al. · 1998 [cited by applicant]
US 5794503A · Asada · 1998 [cited by applicant]
US 5803677A · Brutscher et al. · 1998 [cited by applicant]
US 5813802A · Ajimi et al. · 1998 [cited by applicant]
US 5896800A · Curtsinger et al. · 1999 [cited by applicant]
US 5904455A · Krenzer et al. · 1999 [cited by applicant]
US 5931614A · Meyen et al. · 1999 [cited by applicant]
US 5988953A · Berglund et al. · 1999 [cited by applicant]
US 6007279A · Malone, Jr. · 1999 [cited by applicant]
US 6021857A · Birk et al. · 2000 [cited by applicant]
US 6065370A · Curtsinger et al. · 2000 [cited by applicant]
US D438219S · Brutscher · 2001 [cited by applicant]
US 6205902B1 · Vuorinen · 2001 [cited by applicant]
US 6299389B1 · Barazani · 2001 [cited by applicant]
US 6551036B2 · Heule · 2003 [cited by applicant]
US 6588992B2 · Rudolph · 2003 [cited by applicant]
US 6599063B1 · Capstran · 2003 [cited by applicant]
US D478105S · Morton et al. · 2003 [cited by applicant]
US D478106S · Morton et al. · 2003 [cited by applicant]
US D478339S · Morton et al. · 2003 [cited by applicant]
US D478919S · Morton et al. · 2003 [cited by applicant]
US 6601495B2 · Cranna · 2003 [cited by applicant]
US 6623220B2 · Nuss et al. · 2003 [cited by applicant]
US 6702047B2 · Huber · 2004 [cited by applicant]
US 6705807B1 · Rudolph et al. · 2004 [cited by applicant]
US 6786684B1 · Ecker · 2004 [cited by applicant]
US 6820519B2 · Lefebvre · 2004 [cited by applicant]
US 6959775B2 · Pedersen · 2005 [cited by applicant]
US 6981911B2 · Martina · 2006 [cited by applicant]
US D516594S · Morton · 2006 [cited by applicant]
US 7018145B2 · Mast et al. · 2006 [cited by applicant]
US 7174823B2 · Cranna · 2007 [cited by applicant]
US 7189036B1 · Watson · 2007 [cited by applicant]
US 7241089B2 · Mast et al. · 2007 [cited by applicant]
US 7258180B2 · Kersten · 2007 [cited by applicant]
US RE40297E · Berglund et al. · 2008 [cited by applicant]
US 7401667B2 · Duscha et al. · 2008 [cited by applicant]
US D588175S · Morton · 2009 [cited by applicant]
US 7658136B2 · Rompel et al. · 2010 [cited by applicant]
US D629820S · Van Ryswyk · 2010 [cited by applicant]
US 7892235B2 · Ellis · 2011 [cited by applicant]
US D634343S · Burke, III · 2011 [cited by applicant]
US 7997836B2 · Kim et al. · 2011 [cited by applicant]
US 8092126B2 · Tanaka · 2012 [cited by applicant]
US 8123443B2 · Khangar et al. · 2012 [cited by applicant]
US 8157028B2 · Kersten · 2012 [cited by applicant]
US 8162945B2 · Ellis · 2012 [cited by applicant]
US 8172845B2 · Ellis · 2012 [cited by applicant]
US D664574S · Burke, III · 2012 [cited by applicant]
US 8286736B2 · Weaver et al. · 2012 [cited by applicant]
US 8444353B2 · Khangar et al. · 2013 [cited by applicant]
US D683772S · Wang · 2013 [cited by applicant]
US 8475459B2 · Ellis · 2013 [cited by applicant]
US D687472S · Novak et al. · 2013 [cited by applicant]
US D692470S · Novak et al. · 2013 [cited by applicant]
US 8550756B2 · Borschert et al. · 2013 [cited by applicant]
US 8573907B2 · Kalomeris et al. · 2013 [cited by applicant]
US 8579554B2 · Novak et al. · 2013 [cited by applicant]
US 8579555B2 · Novak et al. · 2013 [cited by applicant]
US D701544S · Novak et al. · 2014 [cited by applicant]
US 8721236B2 · Kazda et al. · 2014 [cited by applicant]
US D706845S · Richter · 2014 [cited by applicant]
US D708650S · Richter · 2014 [cited by applicant]
US D711441S · Novak et al. · 2014 [cited by applicant]
US 9120162B2 · Keightley · 2015 [cited by applicant]
US 9233424B2 · Grolimund et al. · 2016 [cited by applicant]
US 9248518B2 · Elliston et al. · 2016 [cited by applicant]
US D765159S · Novak et al. · 2016 [cited by applicant]
US D789428S · Novak et al. · 2017 [cited by applicant]
US 9884373B2 · Keightley · 2018 [cited by applicant]
US 10058931B2 · Sussman et al. · 2018 [cited by applicant]
US D845362S · Novak et al. · 2019 [cited by applicant]
US D871877S · Terris et al. · 2020 [cited by applicant]
US D875798S · Su · 2020 [cited by applicant]
US 10730119B2 · Sawa et al. · 2020 [cited by applicant]
US D973733S · DuMez et al. · 2022 [cited by applicant]
US 11559840B2 · Sawa et al. · 2023 [cited by applicant]
US 20020050196A1 · Fluhrer et al. · 2002 [cited by applicant]
US 20020081165A1 · Hecht · 2002 [cited by applicant]
US 20020137433A1 · Lee et al. · 2002 [cited by applicant]
US 20030141115A1 · Britten et al. · 2003 [cited by applicant]
US 20040050234A1 · Fluhrer et al. · 2004 [cited by applicant]
US 20040065183A1 · Asada · 2004 [cited by applicant]
US 20050188792A1 · Asada · 2005 [cited by applicant]
US 20060112799A1 · Hambleton et al. · 2006 [cited by applicant]
US 20070160435A1 · Chao · 2007 [cited by applicant]
US 20070212179A1 · Khangar et al. · 2007 [cited by applicant]
US 20080264231A1 · Coe et al. · 2008 [cited by applicant]
US 20080267725A1 · Mills · 2008 [cited by applicant]
US 20080298922A1 · Oettle · 2008 [cited by applicant]
US 20090000454A1 · Baernthaler et al. · 2009 [cited by applicant]
US 20090044674A1 · Neitzell · 2009 [cited by applicant]
US 20090126712A1 · Kullmann et al. · 2009 [cited by applicant]
US 20090274923A1 · Hall et al. · 2009 [cited by applicant]
US 20090279972A1 · Novak et al. · 2009 [cited by applicant]
US 20100054885A1 · Goetz et al. · 2010 [cited by applicant]
US 20100126326A1 · Cloutier · 2010 [cited by applicant]
US 20110197736A1 · Lizzi et al. · 2011 [cited by applicant]
US 20110217133A1 · Ibarra et al. · 2011 [cited by applicant]
US 20120230788A1 · Bozic et al. · 2012 [cited by applicant]
US 20130296866A1 · Ellis · 2013 [cited by applicant]
US 20140013916A1 · Athad · 2014 [cited by applicant]
US 20140017023A1 · Grollmund et al. · 2014 [cited by applicant]
US 20140023446A1 · Piller · 2014 [cited by examiner]
US 20140023447A1 · Thom et al. · 2014 [cited by applicant]
US 20140255117A1 · Tseng · 2014 [cited by applicant]
US 20140271007A1 · Richter · 2014 [cited by examiner]
US 20150000497A1 · Engvall et al. · 2015 [cited by applicant]
US 20150239052A1 · Trumble et al. · 2015 [cited by applicant]
US 20160059329A1 · Fendeleur et al. · 2016 [cited by applicant]
US 20160166260A1 · Ellis · 2016 [cited by applicant]
US 20160175945A1 · Chang · 2016 [cited by applicant]
US 20160175947A1 · Chang · 2016 [cited by applicant]
US 20170120347A1 · Lourenco et al. · 2017 [cited by applicant]
US 20170120357A1 · Trautner et al. · 2017 [cited by applicant]
US 20180085833A1 · Ward · 2018 [cited by applicant]
US 20180193926A1 · Sawa et al. · 2018 [cited by applicant]
CN 2865975Y · 2007 [cited by applicant]
CN 201394679Y · 2010 [cited by applicant]
CN 201597079U · 2010 [cited by applicant]
CN 102689051A · 2012 [cited by applicant]
CN 202963637U · 2013 [cited by applicant]
CN 204171467U · 2015 [cited by applicant]
CN 204321316U · 2015 [cited by applicant]
CN 204565301U · 2015 [cited by applicant]
CN 204818283U · 2015 [cited by applicant]
CN 204997156U · 2016 [cited by applicant]
CN 205519922U · 2016 [cited by applicant]
DE 2422452A1 · 1975 [cited by applicant]
DE 9417252U1 · 1995 [cited by applicant]
DE 19623081C1 · 1998 [cited by applicant]
DE 19810713A1 · 1999 [cited by applicant]
DE 19910219A1 · 1999 [cited by applicant]
DE 19913727A1 · 1999 [cited by applicant]
DE 19939323A1 · 2000 [cited by applicant]
DE 10042402A1 · 2001 [cited by applicant]
DE 20101718U1 · 2001 [cited by applicant]
DE 20113578U1 · 2001 [cited by applicant]
DE 10253247B3 · 2004 [cited by applicant]
DE 202004003900U1 · 2004 [cited by applicant]
DE 102004003900A1 · 2005 [cited by applicant]
DE 202005012328U1 · 2005 [cited by applicant]
DE 202006010180U1 · 2006 [cited by applicant]
DE 202006011952U1 · 2006 [cited by applicant]
EP 0118806A1 · 1984 [cited by applicant]
EP 0216064A1 · 1987 [cited by applicant]
EP 0352215A2 · 1990 [cited by applicant]
EP 0612575A1 · 1994 [cited by applicant]
EP 0715919A1 · 1996 [cited by applicant]
EP 0729801A1 · 1996 [cited by applicant]
EP 1024247A1 · 2000 [cited by applicant]
EP 1078706A2 · 2001 [cited by applicant]
EP 1080859A1 · 2001 [cited by applicant]
EP 1431511A1 · 2004 [cited by applicant]
EP 1852202A1 · 2007 [cited by applicant]
EP 1944107A2 · 2008 [cited by applicant]
EP 1944108A2 · 2008 [cited by applicant]
EP 2502693A1 · 2012 [cited by applicant]
EP 2987577A1 · 2016 [cited by applicant]
FR 2302808A1 · 1976 [cited by applicant]
FR 2421022A1 · 1979 [cited by applicant]
GB 191517961A · 1915 [cited by applicant]
GB 550306A · 1943 [cited by applicant]
GB 2201910A · 1988 [cited by applicant]
JP H0966411A · 1973 [cited by applicant]
JP 2004268166A · 2004 [cited by applicant]
SU 1433650A1 · 1988 [cited by applicant]
WO WO9706338A1 · 1997 [cited by applicant]
WO WO2007118718A1 · 2007 [cited by applicant]
WO WO2012159881A2 · 2012 [cited by applicant]
WO WO2012159947A2 · 2012 [cited by applicant]
WO WO2014180925A1 · 2014 [cited by applicant]
WO WO2016102261A1 · 2016 [cited by applicant]
WO WO2016102539A1 · 2016 [cited by applicant]
European Patent Office Search Report for Application No. 17192777.5 dated Mar. 13, 2018, 7 pages. [cited by applicant]
European Patent Office Search Report for Application No. 18150515.7 dated Jun. 20, 2018, 18 pages. [cited by applicant]
European Patent Office Search Report for Application No. 18150515.7 dated Sep. 18, 2018, 18 pages. [cited by applicant]
European Patent Office Extended Search Report for Application No. 20175783.8 dated Aug. 24, 2020 (16 pages). [cited by applicant]