Patents by Inventor Wojciech T. Pierga

Wojciech T. Pierga 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).

  • Patent number: 10265787
    Abstract: A power saw includes a bevel member and a cutting assembly pivotably connected to the bevel member. The cutting assembly includes a blade, a blade guard at least partially covering the blade, and at least one machined cutting assembly surface. A laser alignment device is connected to the cutting assembly. The laser alignment device includes a laser body fixed to a slideable carriage having a machined carriage surface that directly engages the machined cutting assembly surface. The slideable carriage is configured to move relative to the machined cutting assembly surface with substantially only one degree of freedom defined by an axis of translation.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: April 23, 2019
    Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbH
    Inventors: Michael J. Lawlor, Srinath Srinivas, Matthew D. Cox, Zhao Rui, Pan Huaping, Brian H. Chung, Wojciech T. Pierga
  • Patent number: 9702504
    Abstract: A detection system for detecting a dangerous condition for an operator using a power tool of the type which has an exposed blade relative to a work surface and a protection system for minimizing, if not eliminating the possibility of a user being injured by contacting the blade. In one preferred embodiment of the present invention, a proximity detection system is capable of detecting the presence of a user near the blade of a table saw and a protection system that can either retract the blade below the work surface of the table saw or terminate the drive torque to the blade which can result in rapid stopping of the saw blade by a work piece that is being cut.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: July 11, 2017
    Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbH
    Inventors: Wojciech T. Pierga, Thomas R. Siwek, Ahmad R. Shishegar
  • Publication number: 20140150615
    Abstract: A detection system for detecting a dangerous condition for an operator using a power tool of the type which has an exposed blade relative to a work surface and a protection system for minimizing, if not eliminating the possibility of a user being injured by contacting the blade. In one preferred embodiment of the present invention, a proximity detection system is capable of detecting the presence of a user near the blade of a table saw and a protection system that can either retract the blade below the work surface of the table saw or terminate the drive torque to the blade which can result in rapid stopping of the saw blade by a work piece that is being cut.
    Type: Application
    Filed: February 4, 2014
    Publication date: June 5, 2014
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventors: Wojciech T. Pierga, Thomas R. Siwek, Ahmad R. Shishegar
  • Patent number: 8640583
    Abstract: A detection system for detecting a dangerous condition for an operator using a power tool of the type which has an exposed blade relative to a work surface and a protection system for minimizing, if not eliminating the possibility of a user being injured by contacting the blade. In one preferred embodiment of the present invention, a proximity detection system is capable of detecting the presence of a user near the blade of a table saw and a protection system that can either retract the blade below the work surface of the table saw or terminate the drive torque to the blade which can result in rapid stopping of the saw blade by a work piece that is being cut.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: February 4, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Wojciech T. Pierga, Thomas R. Siwek, Ahmad R. Shishegar
  • Publication number: 20130269494
    Abstract: A miter saw with a cutting alignment device includes a base with a work surface provided thereon. A bevel support is pivotable with respect to the base and a cutting blade is supported by the bevel support. A dust chute is adjustably secured to the bevel support and pivots with respect to the base when the bevel support pivots. The dust chute includes mounts that allow lateral adjustment of the dust chute with respect to the bevel support. A laser alignment device is positioned on the dust chute and configured to emit a beam of light toward the work surface. The dust chute includes a receptacle designed and dimensioned to releasably hold the laser alignment device. Because the laser alignment device is retained on the dust chute, adjustment of the dust chute also results in adjustment of a beam of light emitted from the laser alignment device.
    Type: Application
    Filed: June 11, 2013
    Publication date: October 17, 2013
    Inventors: Wojciech T. Pierga, Michael J. Lawlor
  • Patent number: 8459158
    Abstract: A miter saw with a cutting alignment device includes a base with a work surface provided thereon. A bevel support is pivotable with respect to the base and a cutting blade is supported by the bevel support. A dust chute is adjustably secured to the bevel support and pivots with respect to the base when the bevel support pivots. The dust chute includes mounts that allow lateral adjustment of the dust chute with respect to the bevel support. A laser alignment device is positioned on the dust chute and configured to emit a beam of light toward the work surface. The dust chute includes a receptacle designed and dimensioned to releasably hold the laser alignment device. Because the laser alignment device is retained on the dust chute, adjustment of the dust chute also results in adjustment of a beam of light emitted from the laser alignment device.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: June 11, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Wojciech T. Pierga, Michael J. Lawlor
  • Publication number: 20130019730
    Abstract: A miter saw with a cutting alignment device includes a base with a work surface provided thereon. A bevel support is pivotable with respect to the base and a cutting blade is supported by the bevel support. A dust chute is adjustably secured to the bevel support and pivots with respect to the base when the bevel support pivots. The dust chute includes mounts that allow lateral adjustment of the dust chute with respect to the bevel support. A laser alignment device is positioned on the dust chute and configured to emit a beam of light toward the work surface. The dust chute includes a receptacle designed and dimensioned to releasably hold the laser alignment device. Because the laser alignment device is retained on the dust chute, adjustment of the dust chute also results in adjustment of a beam of light emitted from the laser alignment device.
    Type: Application
    Filed: September 21, 2012
    Publication date: January 24, 2013
    Applicants: Robert Bosch GmbH, Credo Technology Corporation
    Inventors: Wojciech T. Pierga, Michael J. Lawlor
  • Patent number: 8272303
    Abstract: A miter saw with a cutting alignment device includes a base with a work surface provided thereon. A bevel support is pivotable with respect to the base and a cutting blade is supported by the bevel support. A dust chute is adjustably secured to the bevel support and pivots with respect to the base when the bevel support pivots. The dust chute includes mounts that allow lateral adjustment of the dust chute with respect to the bevel support. A laser alignment device is positioned on the dust chute and configured to emit a beam of light toward the work surface. The dust chute includes a receptacle designed and dimensioned to releasably hold the laser alignment device. Because the laser alignment device is retained on the dust chute, adjustment of the dust chute also results in adjustment of a beam of light emitted from the laser alignment device.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: September 25, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Wojciech T. Pierga, Michael J. Lawlor
  • Patent number: 8272304
    Abstract: An improved dust collection system for a miter saw comprising a hollow dust chute attached to a bevel post of a miter saw. The bevel post includes a top portion and a bottom portion and is pivotably attached to a miter saw table. The dust chute comprises an input port positioned to receive saw dust resulting from a cutting operation, an exit port and a funnel body extending from the input port to the exit port. At least a portion of the funnel body extends toward an opening located in a guard of a cutting arm assembly. The cutting arm assembly is pivotably connected to the top portion of the bevel post; wherein, the dust chute remains substantially stationary, as the cutting arm assembly is moved during the cutting operation.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: September 25, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Michael J. Lawlor, Matthew D. Cox, Wojciech T. Pierga
  • Patent number: 8250956
    Abstract: A miter saw with work surface extensions comprises a base with a rotatable table positioned on the base. The miter saw further comprises a bevel support is that is pivotable with respect to a table surface. A cutting blade is supported by the bevel support. A work surface extension is moveably connected to the base between a retracted position and an extended position. The work surface extension provides a work surface that is substantially planar with the table surface. At least one elongated member is fixed to the work surface extension and moveably engages the base. A substantial portion of the at least one elongated member is positioned within or under the base when the work surface extension is in the retracted position. The substantial portion of the at least one elongated member is positioned between the base and the work surface extension when the at least one elongated member is in the extended position.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: August 28, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Matthew Cox, Michael J. Lawlor, Wojciech T. Pierga
  • Publication number: 20110265625
    Abstract: A power saw comprises a bevel member and a cutting assembly pivotably connected to the bevel member. The cutting assembly includes a blade, a blade guard at least partially covering the blade, and at least one machined cutting assembly surface. A laser alignment device is connected to the cutting assembly. The laser alignment device includes a laser body fixed to a slideable carriage having a machined carriage surface that directly engages the machined cutting assembly surface. The slideable carriage is configured to move relative to the machined cutting assembly surface with substantially only one degree of freedom defined by an axis of translation.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 3, 2011
    Applicants: ROBERT BOSCH GMBH, ROBERT BOSCH TOOL CORPORATION
    Inventors: Michael J. Lawlor, Srinath Srinivas, Matthew D. Cox, Zhao Rui, Pan Huaping, Brian H. Chung, Wojciech T. Pierga
  • Publication number: 20110011229
    Abstract: An improved dust collection system for a miter saw comprising a hollow dust chute attached to a bevel post of a miter saw. The bevel post includes a top portion and a bottom portion and is pivotably attached to a miter saw table. The dust chute comprises an input port positioned to receive saw dust resulting from a cutting operation, an exit port and a funnel body extending from the input port to the exit port. At least a portion of the funnel body extends toward an opening located in a guard of a cutting arm assembly. The cutting arm assembly is pivotably connected to the top portion of the bevel post; wherein, the dust chute remains substantially stationary, as the cutting arm assembly is moved during the cutting operation.
    Type: Application
    Filed: January 8, 2010
    Publication date: January 20, 2011
    Applicants: CREDO TECHNOLOGY CORPORATION, ROBERT BOSCH GMBH
    Inventors: Michael J. Lawlor, Matthew D. Cox, Wojciech T. Pierga
  • Publication number: 20100269655
    Abstract: A miter saw with a cutting alignment device includes a base with a work surface provided thereon. A bevel support is pivotable with respect to the base and a cutting blade is supported by the bevel support. A dust chute is adjustably secured to the bevel support and pivots with respect to the base when the bevel support pivots. The dust chute includes mounts that allow lateral adjustment of the dust chute with respect to the bevel support. A laser alignment device is positioned on the dust chute and configured to emit a beam of light toward the work surface. The dust chute includes a receptacle designed and dimensioned to releasably hold the laser alignment device. Because the laser alignment device is retained on the dust chute, adjustment of the dust chute also results in adjustment of a beam of light emitted from the laser alignment device.
    Type: Application
    Filed: April 28, 2009
    Publication date: October 28, 2010
    Applicants: CREDO TECHNOLOGY CORPORATION, ROBERT BOSCH GMBH
    Inventors: Wojciech T. Pierga, Michael J. Lawlor
  • Publication number: 20100269661
    Abstract: A miter saw with work surface extensions comprises a base with a rotatable table positioned on the base. The miter saw further comprises a bevel support is that is pivotable with respect to a table surface. A cutting blade is supported by the bevel support. A work surface extension is moveably connected to the base between a retracted position and an extended position. The work surface extension provides a work surface that is substantially planar with the table surface. At least one elongated member is fixed to the work surface extension and moveably engages the base. A substantial portion of the at least one elongated member is positioned within or under the base when the work surface extension is in the retracted position. The substantial portion of the at least one elongated member is positioned between the base and the work surface extension when the at least one elongated member is in the extended position.
    Type: Application
    Filed: April 28, 2009
    Publication date: October 28, 2010
    Applicants: CREDO TECHNOLOGY CORPORATION, Robert Bosch GmbH
    Inventors: Matthew Cox, Michael J. Lawlor, Wojciech T. Pierga
  • Patent number: 6922153
    Abstract: A detection system for detecting a dangerous condition for an operator using a power tool of the type which has an exposed blade relative to a work surface and a protection system for minimizing, if not eliminating the possibility of a user being injured by contacting the blade. In one preferred embodiment of the present invention, a proximity detection system is capable of detecting the presence of a user near the blade of a table saw and a protection system that can either retract the blade below the work surface of the table saw or terminate the drive torque to the blade which can result in rapid stopping of the saw blade by a work piece that is being cut.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: July 26, 2005
    Assignee: Credo Technology Corporation
    Inventors: Wojciech T. Pierga, Thomas R. Siwek, Ahmad R. Shishegar
  • Publication number: 20040226800
    Abstract: A detection system for detecting a dangerous condition for an operator using a power tool of the type which has an exposed blade relative to a work surface and a protection system for minimizing, if not eliminating the possibility of a user being injured by contacting the blade. In one preferred embodiment of the present invention, a proximity detection system is capable of detecting the presence of a user near the blade of a table saw and a protection system that can either retract the blade below the work surface of the table saw or terminate the drive torque to the blade which can result in rapid stopping of the saw blade by a work piece that is being cut.
    Type: Application
    Filed: May 13, 2003
    Publication date: November 18, 2004
    Applicant: Credo Technology Corporation.
    Inventors: Wojciech T. Pierga, Thomas R. Siwek, Ahmad R. Shishegar
  • Patent number: 6712035
    Abstract: Ignition delay in a diesel engine is reduced or eliminated by a fuel injector or igniter nozzle which includes energy supplying fuel conditioning means at the point of fuel injection into a cylinder. A preferred embodiment includes an electrically-conductive injection valve reciprocable in a conductive nozzle body and seatable on a valve seat to stop fuel flow through nozzle orifices. The injection valve is electrically insulated from the body except at its contact with the valve seat and is connected to an electrical charge, at least during opening of the valve. An electrical spark discharge is thus generated between the injection valve and the valve seat upon opening of the valve. Initially injected fuel passes through the arc and is conditioned by the spark energy to ignite almost immediately by compression ignition upon entering the engine cylinder and thus essentially eliminate diesel ignition delay.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: March 30, 2004
    Assignee: General Motors Corporation
    Inventors: Paul Gottemoller, Richard Wayne Tupek, Michael Barry Goetzke, Jerry Van Polen, David Corba, Wojciech T. Pierga, Donald E. Meyer, Richard J. Lill, Hassan Z. Hannon
  • Publication number: 20030183216
    Abstract: Ignition delay in a diesel engine is reduced or eliminated by a fuel injector or igniter nozzle which includes energy supplying fuel conditioning means at the point of fuel injection into a cylinder. A preferred embodiment includes an electrically-conductive injection valve reciprocable in a conductive nozzle body and seatable on a valve seat to stop fuel flow through nozzle orifices. The injection valve is electrically insulated from the body except at its contact with the valve seat and is connected to an electrical charge, at least during opening of the valve. An electrical spark discharge is thus generated between the injection valve and the valve seat upon opening of the valve. Initially injected fuel passes through the arc and is conditioned by the spark energy to ignite almost immediately by compression ignition upon entering the engine cylinder and thus essentially eliminate diesel ignition delay.
    Type: Application
    Filed: March 26, 2002
    Publication date: October 2, 2003
    Inventors: Paul Gottemoller, Richard Wayne Tupek, Michael Barry Goetzke, Jerry Van Polen, David Corba, Wojciech T. Pierga, Donald E. Meyer, Richard J. Lill, Hassan Z. Hannon