Patents by Inventor Richard Hohnl, Jr.
Richard Hohnl, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240083066Abstract: A drill bit includes a shank defining a longitudinal axis and a cutting edge extending radially outward relative to the longitudinal axis. The cutting edge is configured to remove material from a workpiece along a cutting path during a cutting operation. The drill bit further includes a plurality of scoring elements positioned within the cutting path and configured to contact the workpiece before the cutting edge during the cutting operation.Type: ApplicationFiled: September 11, 2023Publication date: March 14, 2024Inventors: Douglas W. Allen, Richard A. Hohnl, JR., Zachary M. McMahon, Jacob A. Krabbe, James J. Van Essen, Praneeth Gandi
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Publication number: 20230302550Abstract: A step drill bit includes a shank and a body that defines a plurality of axially stacked, progressively sized steps including a first step, a terminal step, and a plurality of intermediate steps having incrementally increasing diameters disposed between the first and terminal steps. The step drill bit includes a flute in the body extending from the distal end to the proximal end and a plurality of cutting edges formed in the body. Each cutting edge is disposed along one of the plurality of steps. Each cutting edge defines a helix angle and a radial rake angle. The helix angle of the cutting edge at a first intermediate step of the plurality of intermediate steps is greater than the helix angle at the first step. The radial rake angle of the cutting edge at the first intermediate step is greater than the radial rake angle at the first step.Type: ApplicationFiled: June 2, 2023Publication date: September 28, 2023Inventors: Brett A. Parendo, Richard Hohnl, JR., David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson, Max R. Sawa, James E. Pangerc
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Patent number: 11691203Abstract: A step drill bit includes a shank and a body having a proximal end adjacent the shank and a distal end opposite the proximal end. The body defines a plurality of axially stacked, progressively sized steps including a first step at the distal end, a terminal step at the proximal end, and a plurality of intermediate steps having incrementally increasing diameters disposed between the first and terminal steps. The step drill bit also includes a plurality of cutting edges each disposed along one of the plurality of steps. Each edge defines a helix angle and a radial rake angle. The radial rake angle and the helix angle of the cutting edge at the terminal step is greater than the radial rake angle and the helix angle of the cutting edge at the first step.Type: GrantFiled: June 23, 2021Date of Patent: July 4, 2023Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson, Max R. Sawa, James E. Pangerc
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Patent number: 11273501Abstract: A drill bit includes a shank extending along a bit axis and a body with a proximal end adjacent the shank and a distal end opposite the proximal end. The body defines a plurality of axially stacked, progressively sized steps including a first step at the distal end and a terminal step at the proximal end. The drill bit also includes a flute in the body. The flute defines an elongated groove that extends from the distal end to the proximal end. The drill bit further includes a plurality of cutting edges formed in the body. Each cutting edge is disposed along one of the plurality of steps and defines a helix angle and a rake angle. The helix angle of the cutting edge at the terminal step is greater than the helix angle of the cutting edge at the first step. A ratio of the helix angle to the rake angle of the cutting edge at the first step is in a range from 0.5 to 2.4, and a ratio of the helix angle to the rake angle of the cutting edge at the terminal step is in a range of 0.9 to 1.7.Type: GrantFiled: April 18, 2019Date of Patent: March 15, 2022Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson, Max R. Sawa, James E. Pangerc
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Publication number: 20210316375Abstract: A step drill bit includes a shank and a body having a proximal end adjacent the shank and a distal end opposite the proximal end. The body defines a plurality of axially stacked, progressively sized steps including a first step at the distal end, a terminal step at the proximal end, and a plurality of intermediate steps having incrementally increasing diameters disposed between the first and terminal steps. The step drill bit also includes a plurality of cutting edges each disposed along one of the plurality of steps. Each edge defines a helix angle and a radial rake angle. The radial rake angle and the helix angle of the cutting edge at the terminal step is greater than the radial rake angle and the helix angle of the cutting edge at the first step.Type: ApplicationFiled: June 23, 2021Publication date: October 14, 2021Inventors: Brett A. Parendo, Richard Hohnl, JR., David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson, Max R. Sawa, James E. Pangerc
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Publication number: 20200222994Abstract: A drill bit includes a shank and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending through the steps. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.Type: ApplicationFiled: March 27, 2020Publication date: July 16, 2020Inventors: Douglas W. Allen, Courtney D. McCool, Smith C. Theiler, Richard Hohnl, JR.
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Patent number: 10695845Abstract: A drill bit includes a shank and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending through the steps. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.Type: GrantFiled: January 17, 2019Date of Patent: June 30, 2020Assignee: Milwaukee Electric Tool CorporationInventors: Douglas W. Allen, Courtney D. McCool, Smith C. Theiler, Richard Hohnl, Jr.
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Patent number: 10618119Abstract: A cutting tool including a body, a blade, a feed shaft, and a locking member. The body defines an axis and is adapted to be received by a spindle of a power tool. The blade is removably supportable on the body and rotatable about the axis for cutting a workpiece. A feed shaft is removably supportable in the body and rotatable about the axis for engaging a workpiece, the feed shaft being mountable in the cutting tool to engage and at least partially restrain the blade. The feed shaft further includes an opening transverse to the axis. The locking member is engageable with the body and with the opening in the feed shaft. Advancement of the locking member into the opening tightens both the blade and the feed shaft to the body.Type: GrantFiled: March 20, 2018Date of Patent: April 14, 2020Assignee: Milwaukee Electric Tool CorporationInventors: Douglas Allen, Richard Hohnl, Jr., Jeffrey M. Zeiler, David B. Griep, Mark D. Willer
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Publication number: 20190329331Abstract: A drill bit includes a shank extending along a bit axis and a body with a proximal end adjacent the shank and a distal end opposite the proximal end. The body defines a plurality of axially stacked, progressively sized steps including a first step at the distal end and a terminal step at the proximal end. The drill bit also includes a flute in the body. The flute defines an elongated groove that extends from the distal end to the proximal end. The drill bit further includes a plurality of cutting edges formed in the body. Each cutting edge is disposed along one of the plurality of steps and defines a helix angle and a rake angle. The helix angle of the cutting edge at the terminal step is greater than the helix angle of the cutting edge at the first step. A ratio of the helix angle to the rake angle of the cutting edge at the first step is in a range from 0.5 to 2.4, and a ratio of the helix angle to the rake angle of the cutting edge at the terminal step is in a range of 0.9 to 1.7.Type: ApplicationFiled: April 18, 2019Publication date: October 31, 2019Inventors: Brett A. Parendo, Richard Hohnl, JR., David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson
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Publication number: 20190143422Abstract: A drill bit includes a shank and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending through the steps. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.Type: ApplicationFiled: January 17, 2019Publication date: May 16, 2019Inventors: Douglas W. Allen, Courtney D. McCool, Smith C. Theiler, Richard Hohnl, JR.
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Patent number: 10252351Abstract: A drill bit includes a shank, a transition portion, and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step coupled to the transition portion. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending from the first step to the transition portion. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.Type: GrantFiled: August 4, 2017Date of Patent: April 9, 2019Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Douglas W. Allen, Courtney D. McCool, Smith C. Theiler, Richard Hohnl, Jr.
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Publication number: 20180311749Abstract: A cutting tool including a body, a blade, a feed shaft, and a locking member. The body defines an axis and is adapted to be received by a spindle of a power tool. The blade is removably supportable on the body and rotatable about the axis for cutting a workpiece. A feed shaft is removably supportable in the body and rotatable about the axis for engaging a workpiece, the feed shaft being mountable in the cutting tool to engage and at least partially restrain the blade. The feed shaft further includes an opening transverse to the axis. The locking member is engageable with the body and with the opening in the feed shaft. Advancement of the locking member into the opening tightens both the blade and the feed shaft to the body.Type: ApplicationFiled: March 20, 2018Publication date: November 1, 2018Inventors: Douglas Allen, Richard Hohnl, JR., Jeffrey M. Zeiler, David B. Griep, Mark D. Willer
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Patent number: 9919364Abstract: A cutting tool including a body, a blade, a feed shaft, and a locking member. The body defines an axis and is adapted to be received by a spindle of a power tool. The blade is removably supportable on the body and rotatable about the axis for cutting a workpiece. A feed shaft is removably supportable in the body and rotatable about the axis for engaging a workpiece, the feed shaft being mountable in the cutting tool to engage and at least partially restrain the blade. The feed shaft further includes an opening transverse to the axis. The locking member is engageable with the body and with the opening in the feed shaft. Advancement of the locking member into the opening tightens both the blade and the feed shaft to the body.Type: GrantFiled: May 16, 2016Date of Patent: March 20, 2018Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Douglas Allen, Richard Hohnl, Jr., Jeffrey M. Zeiler, David B. Griep, Mark D. Willer
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Publication number: 20170326651Abstract: A drill bit includes a shank, a transition portion, and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step coupled to the transition portion. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending from the first step to the transition portion. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.Type: ApplicationFiled: August 4, 2017Publication date: November 16, 2017Inventors: Douglas W. Allen, Courtney D. McCool, Smith C. Theiler, Richard Hohnl, JR.
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Patent number: 9731358Abstract: A drill bit includes a shank, a transition portion, and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step coupled to the transition portion. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines two body flutes each extending from the first step to the transition portion and disposed at a body flute angle different from the tip flute angle. The drill bit includes a bit tip disposed at the distal end of the body portion and having a chisel edge, a first chisel surface on one side of the chisel edge, and a second chisel surface on an opposite side of the chisel edge. The first chisel surface defines a first relief angle. The second chisel surface defines a second relief angle different from the first relief angle.Type: GrantFiled: June 6, 2014Date of Patent: August 15, 2017Assignee: Milwaukee Electric Tool CorporationInventors: Douglas W. Allen, Courtney D. McCool, Smith C. Theiler, Richard Hohnl, Jr.
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Publication number: 20160256938Abstract: A cutting tool including a body, a blade, a feed shaft, and a locking member. The body defines an axis and is adapted to be received by a spindle of a power tool. The blade is removably supportable on the body and rotatable about the axis for cutting a workpiece. A feed shaft is removably supportable in the body and rotatable about the axis for engaging a workpiece, the feed shaft being mountable in the cutting tool to engage and at least partially restrain the blade. The feed shaft further includes an opening transverse to the axis. The locking member is engageable with the body and with the opening in the feed shaft. Advancement of the locking member into the opening tightens both the blade and the feed shaft to the body.Type: ApplicationFiled: May 16, 2016Publication date: September 8, 2016Inventors: Douglas Allen, Richard Hohnl, JR., Jeffrey M. Zeiler, David B. Griep, Mark D. Willer
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Patent number: D872783Type: GrantFiled: April 27, 2018Date of Patent: January 14, 2020Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson
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Patent number: D881241Type: GrantFiled: December 3, 2019Date of Patent: April 14, 2020Assignee: Milwaukee Electric Tool CorporationInventors: Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson
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Patent number: D892183Type: GrantFiled: March 4, 2020Date of Patent: August 4, 2020Assignee: MILWAUKEE ELECTRIC TOOL CORPORATIONInventors: Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson
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Patent number: D936117Type: GrantFiled: November 20, 2019Date of Patent: November 16, 2021Assignee: Milwaukee Electric Tool CorporationInventors: Douglas W. Allen, Courtney D. McCool, Smith C. Theiler, Richard Hohnl, Jr.