Patents by Inventor Daniel F. Nace

Daniel F. Nace 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: 10404136
    Abstract: A handheld grinder includes an elongated housing, an electric motor, an output shaft, a wall, a planar circuit board, and a motor drive circuit. The elongated housing defines a cavity therein and includes a motor case disposed at a front end and a handle portion to a rear end. The electric motor has a drive shaft that is mounted within the motor case. The output shaft is drivably coupled to the drive shaft of the electric motor. The wall separates the cavity between the motor case and the handle portion of the housing. The planar circuit board disposed in the handle portion of the housing. The motor drive circuit is accommodated entirely within the handle portion of the housing on the planar circuit board.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: September 3, 2019
    Assignee: Black & Decker Inc.
    Inventors: Craig A. Oktavec, David J. Smith, Colin C. Crosby, Matthew J. Velderman, Zollie W. Privett, Jr., Pradeep Pant, Kyle J. Christophersen, Daniel F. Nace, James H. Stiles, III, Floyd E. Moreland, IV
  • Publication number: 20190152014
    Abstract: A power tool is provided including a motor case and a handle portion. An electric motor having a drive shaft is mounted within the motor case. A circuit board is disposed in the handle portion to accommodate a motor drive circuit. The motor drive circuit includes a rectifier configured to receive an alternating current from an alternating current (AC) power source and convert it to a direct current supplied to a DC power bus, and a bridge circuit having motor switches connected between the rectifier and the electric motor. A bus capacitor is mounted on the circuit board and coupled across the DC power bus. An auxiliary capacitor having higher capacitance than the bus capacitor is switchably coupled across the DC power bus. The handle portion includes a support member protruding radially outwardly to accommodate the auxiliary capacitor.
    Type: Application
    Filed: January 24, 2019
    Publication date: May 23, 2019
    Inventors: Zollie W. PRIVETT, Craig A. OKTAVEC, David J. SMITH, Matthew J. VELDERMAN, Colin C. CROSBY, Pradeep PANT, Kyle J. CHRISTOPHERSEN, Daniel F. NACE, James H. STILES, III, Floyd E. MORELAND, IV
  • Patent number: 10272558
    Abstract: A power tool is provided including an elongated housing. The housing includes a motor case disposed at a front end thereof and a handle portion extending along a longitudinal axis of the housing from the motor case to a rear end of the housing. The handle portion includes two elongated walls extending from the motor case along the longitudinal axis of the housing to form a planar opening within the handle portion. A partition wall is arranged along an axis substantially perpendicular to the longitudinal axis of the housing, separating the handle portion from the motor case. An electric motor having a drive shaft is mounted within the motor case, and a module casing supporting a planar circuit board is received within the planar opening and supported by the elongated walls within the handle portion of the housing axially along the longitudinal axis of the housing.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: April 30, 2019
    Assignee: Black & Decker Inc.
    Inventors: Kyle J. Christophersen, Daniel F. Nace, James H. Stiles, III, Floyd E. Moreland, IV, Craig A. Oktavec, David J. Smith, Zollie W. Privett, Jr., Matthew J. Velderman, Colin M. Crosby, Pradeep M. Pant
  • Patent number: 10226849
    Abstract: A handheld grinder includes an elongated housing, an electric motor, an output shaft, a wall, a planar circuit board, and a motor drive circuit. The elongated housing defines a cavity therein and includes a motor case disposed at a front end and a handle portion to a rear end. The electric motor has a drive shaft that is mounted within the motor case. The output shaft is drivably coupled to the drive shaft of the electric motor. The wall separates the cavity between the motor case and the handle portion of the housing. The planar circuit board is disposed in the handle portion of the housing. The motor drive circuit is accommodated entirely within the handle portion of the housing on the planar circuit board.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: March 12, 2019
    Assignee: BLACK & DECKER INC.
    Inventors: Zollie W. Privett, Jr., Craig A. Oktavec, David J. Smith, Matthew J. Velderman, Colin C. Crosby, Pradeep M. Pant, Kyle Christophersen, Daniel F. Nace, James H. Stiles, III, Floyd E. Moreland, IV
  • Publication number: 20180366286
    Abstract: A power tool is provided including a housing, a motor disposed within the housing, an on/off switch having a contact tip disposed within the housing for activating the motor, a paddle switch coupled to the housing via a pivot member and having a paddle trigger engageable by a user, a switch contact lever disposed in selectable engagement with the contact tip of the on/off switch to activate or deactivate the on/off switch, and a biasing member disposed between the switch contact lever and the paddle switch to absorb a travel distance of the paddle trigger with respect to the switch contact lever.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 20, 2018
    Inventors: Floyd E. Moreland, IV, Earnest N. Copeland, JR., James H. Stiles, III, Daniel F. Nace, Kyle J. Christophersen
  • Publication number: 20170274520
    Abstract: A power tool is provided including an elongated housing. The housing includes a motor case disposed at a front end thereof and a handle portion extending along a longitudinal axis of the housing from the motor case to a rear end of the housing. The handle portion includes two elongated walls extending from motor along the longitudinal axis of the housing to form a planar opening within the handle portion. A partition wall is arranged along an axis substantially perpendicular to the longitudinal axis of the housing, separating the handle portion from the motor case. An electric motor having a drive shaft is mounted within the motor case, and a module casing supporting a planar circuit board is received within the planar opening and supported by the elongated walls within the handle portion of the housing axially along the longitudinal axis of the housing.
    Type: Application
    Filed: June 14, 2017
    Publication date: September 28, 2017
    Inventors: Kyle J. Christophersen, Daniel F. Nace, James H. Stiles, III, Floyd E. Moreland, IV, Craig A. Oktavec, David J. Smith, Zollie W. Privett, JR., Matthew J. Velderman, Colin M. Crosby, Pradeep M. Pant
  • Publication number: 20170234484
    Abstract: A power tool is provided including a housing, a brushless direct-current (BLDC) electric motor disposed inside the housing, power switches disposed between a power supply and the electric motor and including high-side switches and low-side switches, and a control unit configured to control a switching operation of the power switches to operate the electric motor and electronically brake the motor by simultaneously activating the high-side switches or the low-side switches to stop the rotation of the motor upon detection of a condition prompting the braking of the motor. The control unit is configured to detect the condition that prompts the braking of the electric motor, set a braking profile for braking the electric motor based on the detected condition, and execute braking of the electric motor using the braking profile.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 17, 2017
    Applicant: Black & Decker Inc.
    Inventors: John C. Vanko, Marcell E. Coates, Daniel F. Nace, Matthew J. Velderman, Sean M. Kelly, James E. Goble
  • Publication number: 20170110935
    Abstract: A handheld grinder includes an elongated housing, an electric motor, an output shaft, a wall, a planar circuit board, and a motor drive circuit. The elongated housing defines a cavity therein and includes a motor case disposed at a front end and a handle portion to a rear end. The electric motor has a drive shaft that is mounted within the motor case. The output shaft is drivably coupled to the drive shaft of the electric motor. The wall separates the cavity between the motor case and the handle portion of the housing. The planar circuit board disposed in the handle portion of the housing. The motor drive circuit is accommodated entirely within the handle portion of the housing on the planar circuit board.
    Type: Application
    Filed: September 12, 2016
    Publication date: April 20, 2017
    Inventors: Craig A. OKTAVEC, David J. SMITH, Colin C. CROSBY, Matthew J. VELDERMAN, Zollie W. PRIVETT, Jr., Pradeep PANT, Kyle J. CHRISTOPHERSEN, Daniel F. NACE, James H. STILES, III, Floyd E. MORELAND, IV
  • Publication number: 20170106490
    Abstract: A handheld grinder includes an elongated housing, an electric motor, an output shaft, a wall, a planar circuit board, and a motor drive circuit. The elongated housing defines a cavity therein and includes a motor case disposed at a front end and a handle portion to a rear end. The electric motor has a drive shaft that is mounted within the motor case. The output shaft is drivably coupled to the drive shaft of the electric motor. The wall separates the cavity between the motor case and the handle portion of the housing. The planar circuit board disposed in the handle portion of the housing. The motor drive circuit is accommodated entirely within the handle portion of the housing on the planar circuit board.
    Type: Application
    Filed: September 12, 2016
    Publication date: April 20, 2017
    Inventors: Zollie W. PRIVETT, JR., Craig A. OKTAVEC, David J. SMITH, Mathew J. VELDERMAN, Colin C. CROSBY, Pradeep PANT, Kyle J. CHRISTOPHERSEN, Daniel F. NACE, James H. STILES, III, Floyd E. MORELAND, IV
  • Patent number: 9438079
    Abstract: An electric motor is provided including a stator and an armature received within the stator for rotational movement within the stator. The armature includes an armature shaft on which a commutator is mounted, and a lamination stack also mounted on the armature shaft and having radially extending teeth. The armature includes an end insulator arranged at an end of the lamination stack, the end insulator having a base portion fitted around the armature shaft and insulating teeth corresponding to the radially extending teeth of the lamination stack. A set of coils are wound in the lamination stack slots and the end insulator slots. At least a portion of the insulating teeth has a greater thickness than at least a portion of the base portion. Alternatively, at least one of the insulating teeth has a greater thickness than at least another of the insulating teeth.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: September 6, 2016
    Assignee: BLACK & DECKER INC.
    Inventors: Daniel F. Nace, Michael Marjomaa
  • Patent number: 9143015
    Abstract: A power tool is provided including a tool housing in which an electric motor is disposed. The electric motor includes a stator and an armature rotatably received within the stator. The armature has an armature shaft on which a commutator is mounted. The power tool further includes at least one brush assembly disposed around the commutator, the brush assembly including: a brush having two grooves on opposites surfaces therein; a brush holder comprising two support plates arranged defining guiderails that extend into the grooves of the brush to facilitate movement of the brush along a single axis; and a spring contacting the brush that urges the brush radially inwardly along the axis.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 22, 2015
    Assignee: Black & Decker Inc.
    Inventors: Daniel F. Nace, Marco A. Mattucci, Michael R. Marjomaa, Craig A. Oktavec
  • Publication number: 20150042183
    Abstract: A power tool is provided including a housing and an electric motor disposed in the housing. The motor includes a stator having a lamination stack having separately-formed pole pieces and field coils disposed on the pole pieces, and an armature disposed in the stator. An end ring is disposed at an end of the lamination stack, the end ring including at least two ring pieces mated together around a portion of the field coils extending beyond pole tips of the pole pieces.
    Type: Application
    Filed: August 19, 2013
    Publication date: February 12, 2015
    Applicant: Black & Decker Inc.
    Inventors: Craig A. Oktavec, Robert G. Kusmierski, David J. Smith, Daniel F. Nace
  • Publication number: 20130313924
    Abstract: A power tool is provided including a tool housing in which an electric motor is disposed. The electric motor includes a stator and an armature rotatably received within the stator. The armature has an armature shaft on which a commutator is mounted. The power tool further includes at least one brush assembly disposed around the commutator, the brush assembly including: a brush having two grooves on opposites surfaces therein; a brush holder comprising two support plates arranged defining guiderails that extend into the grooves of the brush to facilitate movement of the brush along a single axis; and a spring contacting the brush that urges the brush radially inwardly along the axis.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 28, 2013
    Inventors: Daniel F. Nace, Marco A. Mattucci
  • Publication number: 20130313940
    Abstract: An electric motor is provided including a stator and an armature received within the stator for rotational movement within the stator. The armature includes an armature shaft on which a commutator is mounted, and a lamination stack also mounted on the armature shaft and having radially extending teeth that form slots therebetween. The armature further includes end insulator arranged at an end of the lamination stack, the end insulator having a base portion fitted around the armature shaft and insulating teeth corresponding to the radially extending teeth of the lamination stack. A set of coils are wound in the lamination stack slots and the end insulator slots. In an embodiment, at least a portion of the insulating teeth has a greater thickness than at least a portion of the base portion. In another embodiment, at least one of said insulating teeth has a greater thickness than at least another of said insulating teeth. In yet another embodiment, the end insulator has a uniform thickness of at least 5 mm.
    Type: Application
    Filed: May 22, 2013
    Publication date: November 28, 2013
    Applicant: Black & Decker Inc.
    Inventors: Daniel F. Nace, Michael Marjomaa