Patents Represented by Attorney Dennis A. Dearing
  • Patent number: 6104155
    Abstract: An electric motor (10,110,210) comprises a TRIAC (16, 116, 216) for controlling the application power to the motor and a switch (18,118,215a) for controlled cut-off of the power supply. Upon operation of a switch (15b, 115B, 215B) for short-circuiting of motor from a power supply (13, 14; 113,114; 213,214) armature the power is supported to the field windings (12,112,212) with at least one predetermined braking voltage. Upon exhaustion of a braking period, the switch mechanism operates to cut off power completely from the motor.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: August 15, 2000
    Assignee: Black & Decker Inc.
    Inventor: Carlo Rosa
  • Patent number: 6094025
    Abstract: An electric motor (10, 110, 210) is coupled to a TRIAC (16, 116, 216) for controlling the application of power to the motor from a power supply (13, 14; 113, 114; 213, 214) and a switch (18, 118, 215a) for controlled cut-off of the power supply. Upon operation of a switch (15b, 115b, 215b) for short-circuiting an armature (11, 111, 211) of the motor, power is supplied to field windings (12, 112, 212,) of the motor with at least one predetermined braking voltage. A braking period can be established following short-circuiting of the motor by (1) a prescribed delay, (2) comparing the changing voltage level across the TRIAC (16, 116) and cutting the power off when the voltage level rises to a prescribed level, or (3) monitoring the decreasing speed of the motor to cut off the power when the speed decreases below a prescribed level.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: July 25, 2000
    Assignee: Black & Decker Inc.
    Inventor: Carlo Rosa
  • Patent number: 6050759
    Abstract: A hand held router (2) includes a rotatable member (22) having screwthread engagement with the housing (4) of the router (2). Rotation of the rotatable member (22) causes adjustment of the depth of cut of the router bit (18) protruding through the rotatable member (22). A releasable detent means (30) engages with latching members (28) in the rotatable member (22) thereby to enable locking of the depth of cut mechanism.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: April 18, 2000
    Assignee: Black & Decker Inc.
    Inventor: Daniel Bone
  • Patent number: 6045887
    Abstract: An abrasive sheet 1 for a sanding or polishing machine, comprising a body portion 3 and a tip portion 5 providing a working point 11, the tip portion 5 being defined by a weakened region 7 between the body portion 3 and the tip portion 5, wherein the tip portion 5 can be separated from the body portion 3, turned through an angle (FIG. 2) and re-positioned adjacent the body portion 3 to change the working point 11. As a result, an iron-shaped abrasive sheet, for example, can be provided with a plurality of working points 11. The sheet can, therefore, be used for longer periods before it is worn out.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: April 4, 2000
    Assignee: Black & Decker Inc.
    Inventors: Michael Martin, Colin Pugh, Eric Cockburn
  • Patent number: 6045236
    Abstract: The present invention is directed to an on/off switch for a flashlight having a reflector secured against axial motion. The reflector has a central opening. The flashlight includes a bulb with a base having an outer cylindrical electrical terminal. The bulb extends through the central opening of the reflector. The switch includes a bulb holder, with the bulb secured in and moving with the bulb holder. The switch also includes an electrical contact disposed in the flashlight so as to be adjacent and biased away from the cylindrical electrical terminal of the bulb. The switch also includes a ring rotatably disposed in the flashlight. The ring is mechanically linked to the bulb holder and includes an element disposed adjacent the electrical contact.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: April 4, 2000
    Assignee: Black & Decker Inc.
    Inventors: Leo K. F. Cheng, Eddie Y. H. Lo, Victer Au-Yeung Tin Shun, Roger Q. Smith
  • Patent number: 6021857
    Abstract: A masonry drill bit having an active diameter of D, comprising a shaft and a tip 1 for engaging a workpiece, wherein the tip 1 is formed with a plurality of stepped portions shaped to cut a workpiece as the drill bit rotates. By virtue of the drill bit tip 5 configuration as described and claimed herein, a masonry drill bit 1 having improved performance is provided.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: February 8, 2000
    Assignees: Black & Decker Inc., Plansee Tizit
    Inventors: Rudi Birk, Werner Ferstl, Ronald Huber, Walter Lempach
  • Patent number: D420577
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: February 15, 2000
    Assignee: Black & Decker Inc.
    Inventors: Chris Steel, Gordon Nicol
  • Patent number: D421566
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: March 14, 2000
    Assignee: Black & Decker Inc.
    Inventor: Nicholas E. Achterberg
  • Patent number: D421615
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: March 14, 2000
    Assignee: Black & Decker Inc.
    Inventors: Stephen Argo, Donald W. Zurwelle
  • Patent number: D422730
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: April 11, 2000
    Assignee: Black & Decker Inc.
    Inventors: Shane Byler, Vincent P. Cooper, Roger Q. Smith
  • Patent number: D423314
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: April 25, 2000
    Assignee: Black & Decker Inc.
    Inventor: Nigel Robson
  • Patent number: D423315
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: April 25, 2000
    Assignee: Black & Decker Inc.
    Inventor: Nigel Robson
  • Patent number: D423897
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: May 2, 2000
    Assignee: Black & Decker Inc.
    Inventor: Vincent Paul Cooper
  • Patent number: D424075
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: May 2, 2000
    Assignee: Black & Decker Inc.
    Inventor: John P. Streich
  • Patent number: D424902
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: May 16, 2000
    Assignee: Black & Decker Inc.
    Inventors: Paul Gildersleeve, Donald W. Zurwelle
  • Patent number: D427872
    Type: Grant
    Filed: January 18, 1999
    Date of Patent: July 11, 2000
    Assignee: Black & Decker Inc.
    Inventor: Gregory Scott Snider
  • Patent number: D429262
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: August 8, 2000
    Assignee: Black & Decker Inc.
    Inventor: John P. Streich
  • Patent number: D429884
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: August 29, 2000
    Assignee: Black & Decker Inc.
    Inventors: Donald W. Zurwelle, Meyric K. Rogers, Bruce M. Waters, Bradford Hollinger, Max Kessler
  • Patent number: D431438
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: October 3, 2000
    Assignee: Black & Decker Inc.
    Inventors: Gregg Flender, Sean W. Flickinger, George H. F. Schnakenberg, III, Donald W. Zurwelle
  • Patent number: D434627
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: December 5, 2000
    Assignee: Black & Decker Inc.
    Inventor: John E. Buck