Patents by Inventor David Hlavac
David Hlavac 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).
-
Publication number: 20200108451Abstract: A drill bit includes a body having a first end, a second end, and an axis of rotation extending centrally through the body from the first end to the second end. The drill bit also includes a shank adjacent the second end. The drill bit further includes a cutting head adjacent the first end. The cutting head includes a pilot tip and a cutting portion. The cutting portion has first tip surfaces and second tip surfaces on opposite sides of the pilot tip. Each first tip surface extends radially outward from the pilot tip to a corresponding second tip surface. The first tip surfaces define a first tip angle through the axis of rotation that is less than 180 degrees. The second tip surfaces define a second tip angle through the axis of rotation that is smaller than the first tip angle.Type: ApplicationFiled: October 7, 2019Publication date: April 9, 2020Inventors: Alexander R. GREENHILL, Brett A. PARENDO, David HLAVAC, WeiJie WU, Gang HUANG
-
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
-
Publication number: 20190232391Abstract: A drill bit includes a body having a first end, a second end opposite the first end, and an axis of rotation extending centrally through the body. The drill bit includes a cutting head with a cutting tip on the axis of rotation and a cutting portion. The cutting portion includes first tip surfaces on opposite sides of the axis of rotation and second tip surfaces on opposite sides of the axis of rotation. Each first tip surface extends radially outward from the cutting tip to a corresponding second tip surface. Each second tip surface extends from a corresponding first tip surface to an outer periphery of the body. The first tip surfaces define a first tip angle measured through the axis of rotation that is oblique. The second tip surfaces define a second tip angle measured through the axis of rotation that is smaller than the first tip angle.Type: ApplicationFiled: January 29, 2019Publication date: August 1, 2019Inventors: Brett A. Parendo, Alexander R. Greenhill, David Hlavac, Carter A. Gibson
-
Patent number: 8061251Abstract: A power tool includes a base, a table supported by the base for pivoting movement about an axis, a coarse adjustment assembly between the base and the table, and a fine adjustment assembly between the base and the table. The fine adjustment assembly includes a rotating member supported by one of the base and the table, and an engagement surface provided by the other of the base and the table. The rotating member is selectively engageable with and rotatable along the engagement surface to finely adjust the angular position of the table relative to the base. The angular position of the table relative to the base is coarsely adjustable using the coarse adjustment assembly when the rotating member is disengaged from the engagement surface. The fine adjustment assembly disengages the coarse adjustment assembly and maintains the coarse adjustment assembly disengaged when the rotating member is engaged with the engagement surface.Type: GrantFiled: March 6, 2009Date of Patent: November 22, 2011Assignee: Milwaukee Electric Tool CorporationInventors: Jason D. Hetcher, Mark D. Willer, William A. Elger, Harold L. Papenfuss, Daryl S. Richards, David R. Bauer, Michael E. Weber, Eric X. Fernandes, David Hlavac, Michael L. Welliver, Daniel H. Schneider
-
Patent number: 7802505Abstract: A power tool includes a housing assembly having a housing portion and an arm extending upwardly from the housing portion. The arm has an outer surface. The power tool also includes a drive unit supported by the arm. The drive unit is operable to drive a tool element to work on a work piece. The power tool further includes a collection assembly operable to collect debris generated by the tool element working on the work piece. The collection assembly includes a collection chute assembly having an inlet and an outlet. The collection chute assembly is positionable on the arm to define, between the inlet and the outlet, a first path for debris around one side of the outer surface of the arm and a second path for debris around the other side of the outer surface of the arm.Type: GrantFiled: April 15, 2005Date of Patent: September 28, 2010Assignee: Milwaukee Electric Tool CorporationInventors: Jason D. Hetcher, Mark D Willer, Dennis J. Cerney, William A. Elger, Harold L. Papenfuss, Daryl S. Richards, David R. Bauer, Edward T. Gisske, Edward A. Raleigh, Michael E. Weber, Eric Fernandes, David Hlavac, Troy C. Thorson, Michael L. Welliver
-
Patent number: 7798041Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: GrantFiled: April 15, 2005Date of Patent: September 21, 2010Assignee: Milwaukee Electric Tool CorporationInventors: Jason D. Hetcher, Mark D. Willer, Dennis J. Cerney, William A. Elger, Harold L. Papenfuss, Daryl S. Richards, David R. Bauer, Edward T. Gisske, Edward A. Raleigh, Michael E. Weber, Eric Fernandes, David Hlavac, Troy C. Thorson, Michael L. Welliver
-
Patent number: 7574950Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: GrantFiled: April 15, 2005Date of Patent: August 18, 2009Assignee: Milwaukee Electric Tool CorporationInventors: Jason D. Hetcher, Mark D. Willer, Dennis J. Cerney, William A. Elger, Harold L. Papenfuss, Daryl S. Richards, David R. Bauer, Edward T. Gisske, Edward A. Raleigh, Michael E. Weber, Eric Fernandes, David Hlavac, Troy C. Thorson, Michael L. Welliver
-
Publication number: 20090199689Abstract: A power tool includes a base, a table supported by the base for pivoting movement about an axis, a coarse adjustment assembly between the base and the table, and a fine adjustment assembly between the base and the table. The fine adjustment assembly includes a rotating member supported by one of the base and the table, and an engagement surface provided by the other of the base and the table. The rotating member is selectively engageable with and rotatable along the engagement surface to finely adjust the angular position of the table relative to the base. The angular position of the table relative to the base is coarsely adjustable using the coarse adjustment assembly when the rotating member is disengaged from the engagement surface. The fine adjustment assembly disengages the coarse adjustment assembly and maintains the coarse adjustment assembly disengaged when the rotating member is engaged with the engagement surface.Type: ApplicationFiled: March 6, 2009Publication date: August 13, 2009Inventors: Jason D. Hetcher, Mark D. Willer, William A. Elger, Harold L. Papenfuss, Daryl S. Richards, David R. Bauer, Michael E. Weber, Eric X. Fernandes, David Hlavac, Michael L. Welliver, Daniel H. Schneider
-
Publication number: 20060266184Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: ApplicationFiled: August 3, 2006Publication date: November 30, 2006Inventors: Jason Hetcher, Mark Willer, Dennis Cerney, William Elger, Harold Papenfuss, Daryl Richards, David Bauer, Edward Gisske, Edward Raleigh, Michael Weber, Eric Fernandes, David Hlavac, Troy Thorson, Michael Welliver
-
Publication number: 20060162523Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: ApplicationFiled: December 16, 2005Publication date: July 27, 2006Inventors: Jason Hetcher, Mark Willer, Dennis Cerney, William Elger, Harold Papenfuss, Daryl Richards, David Bauer, Edward Gisske, Edward Raleigh, Michael Weber, Eric Fernandes, David Hlavac, Troy Thorson, Michael Welliver
-
Publication number: 20050262978Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: ApplicationFiled: April 15, 2005Publication date: December 1, 2005Inventors: Jason Hetcher, Mark Willer, Dennis Cerney, William Elger, Harold Papenfuss, Daryl Richards, David Bauer, Edward Gisske, Edward Raleigh, Michael Weber, Eric Fernandes, David Hlavac, Troy Thorson, Michael Welliver
-
Publication number: 20050262983Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: ApplicationFiled: April 15, 2005Publication date: December 1, 2005Inventors: Jason Hetcher, Mark Willer, Dennis Cerney, William Elger, Harold Papenfuss, Daryl Richards, David Bauer, Edward Gisske, Edward Raleigh, Michael Weber, Eric Fernandes, David Hlavac, Troy Thorson, Michael Welliver
-
Publication number: 20050262984Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: ApplicationFiled: April 15, 2005Publication date: December 1, 2005Inventors: Jason Hetcher, Mark Willer, Dennis Cerney, William Elger, Harold Papenfuss, Daryl Richards, David Bauer, Edward Gisske, Edward Raleigh, Michael Weber, Eric Fernandes, David Hlavac, Troy Thorson, Michael Welliver
-
Publication number: 20050247177Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: ApplicationFiled: April 15, 2005Publication date: November 10, 2005Inventors: Jason Hetcher, Mark Willer, Dennis Cerney, William Elger, Harold Papenfuss, Daryl Richards, David Bauer, Edward Gisske, Edward Raleigh, Michael Weber, Eric Fernandes, David Hlavac, Troy Thorson, Michael Welliver
-
Publication number: 20050247178Abstract: A saw, such as a chop saw, a miter saw, a sliding saw, a compound miter saw, etc. In some constructions, the saw may include a miter adjustment assembly including a coarse adjustment assembly and a fine adjustment assembly. In some constructions, the saw may include a bevel adjustment assembly including a brake mechanism and a bevel detent assembly. In some constructions, the saw may include a dust collection assembly including a dust chute defining a dust both around the bevel arm. In some constructions, the saw may include a table having a top wall with a peripheral rim and a side wall depending from the top wall, and a base defining an opening in which the side wall is received and a ledge above which the rim is positioned. In some constructions, the saw may include elastomeric material covering a portion of the base, such as a bottom surface, a lateral surface, a grip surface, etc.Type: ApplicationFiled: April 15, 2005Publication date: November 10, 2005Inventors: Jason Hetcher, Mark Willer, Dennis Cerney, William Elger, Harold Papenfuss, Daryl Richards, David Bauer, Edward Gisske, Edward Raleigh, Michael Weber, Eric Fernandes, David Hlavac, Troy Thorson, Michael Welliver
-
Patent number: D556224Type: GrantFiled: April 15, 2005Date of Patent: November 27, 2007Assignee: Milwaukee Electric Tool CorporationInventors: Jason D. Hetcher, Mark D. Willer, Dennis J. Cerney, William A. Elger, Harold L. Papenfuss, Daryl S. Richards, David R. Bauer, Edward T. Gisske, Edward A. Raleigh, Michael E. Weber, Eric Fernandes, David Hlavac, Troy C. Thorson, Michael L. Welliver
-
Patent number: D602964Type: GrantFiled: October 14, 2005Date of Patent: October 27, 2009Assignee: Milwaukee Electric Tool CorporationInventors: Jason D. Hetcher, Mark D. Willer, Dennis J. Cerney, William A. Elger, Harold L. Papenfuss, Daryl S. Richards, David R. Bauer, Edward T. Gisske, Edward R. Raleigh, Michael E. Weber, Eric Fernandes, David Hlavac, Troy C. Thorson, Michael L. Welliver
-
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