Patents by Inventor Paul Edward Duggan

Paul Edward Duggan 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).

  • Blade
    Patent number: 8602016
    Abstract: A blade comprises a strip having a main body portion and an edge portion. Cutting medium in the form of a diamond grit is secured to the strip by braze material. The edge portion is thinner than the main body portion.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: December 10, 2013
    Assignee: C4 Carbides Limited
    Inventor: Paul Edward Duggan
  • Blade
    Publication number: 20100031947
    Abstract: A blade comprises a strip having a main body portion and an edge portion. Cutting medium in the form of a diamond grit is secured to the strip by braze material. The edge portion is thinner than the main body portion.
    Type: Application
    Filed: October 12, 2007
    Publication date: February 11, 2010
    Inventor: Paul Edward Duggan
  • Drill Bit
    Publication number: 20090304468
    Abstract: A drill bit has a cutting face for engaging a workpiece. The cutting face forms an annular cut. A mouth is bounded by the cutting face and receives material of the workpiece from within the annular cut, as cutting progresses. An internal passage has a mouth through which this material can leave the bit.
    Type: Application
    Filed: October 23, 2006
    Publication date: December 10, 2009
    Inventor: Paul Edward Duggan
  • Power Tool Attachments
    Publication number: 20090133890
    Abstract: An attachment is for a power tool having a chuck. The attachment has a connection portion in the form of a shaft for connecting the attachment with the tool, during use, by attachment in the chuck. The attachment further has a blade portion which, in use, is offered to a surface indicated at, and to which hammer blows are transmitted from the hammer tool, thereby causing the blade portion to cut into the surface.
    Type: Application
    Filed: October 12, 2006
    Publication date: May 28, 2009
    Inventor: Paul Edward Duggan
  • Blade
    Publication number: 20090056150
    Abstract: A blade 1 comprises a strip 2 having a main body portion 4 and an edge portion 6. Cutting medium 8 in the form of a grit is secured to the strip 2 by braze material. The grit may be diamond, tungsten carbide, cubic boron nitride, a ceramic material, a ceramic-based material or a cermet material. The edge portion 16 is thinner than the main body portion 14.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 5, 2009
    Inventor: Paul Edward Duggan
  • Saw blades
    Patent number: 7137316
    Abstract: A saw blade is formed from a blank which has an edge. Inserts, such as tungsten carbide are inserted in apertures in the blank and a finishing cut is then made along the line to produce a series of teeth, each having a point within the body of the insert, and thus formed by the relatively hard material of the insert. Fingers of the inserts provide a root which holds the insert in position during use.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: November 21, 2006
    Assignee: C4 Carbides Limited
    Inventors: Peter John Nicolson, Paul Edward Duggan
  • Saw blades
    Publication number: 20040035253
    Abstract: A saw blade is formed from a blank which has an edge (14). Inserts (22), such as tungsten carbide are inserted in apertures in the blank and a finishing cut is then made along then made along the lien (40) to produce a series of teeth at (44), each having a point (46) within the body of the insert (22), and thus formed by the relatively hard material of the insert (22). Fingers (26) of the inserts (22) provide a root which holds the insert in position during use.
    Type: Application
    Filed: December 4, 2002
    Publication date: February 26, 2004
    Inventors: Peter John Nicolson, Paul Edward Duggan
  • Hard tile drill bit
    Patent number: D570663
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: June 10, 2008
    Assignee: C4 Carbides Limited
    Inventor: Paul Edward Duggan