Patents by Inventor John R. Curtsinger

John R. Curtsinger 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: 7117863
    Abstract: An improved circular saw blade designed for cutting fiber cement workpieces, which are becoming more and more prevalent on the construction site, includes a PCD/carbide tip (16) mounted in the rim (31) of the saw blade (10) at six, rather than the usual for locations, equally spaced around the blade. The tips are mounted adjacent a relatively large-diameter, semi-circular gullet (20), which itself is preceded by a chip and dust minimizer (18). The minimizer includes several alternating hills (52) and valleys (54) formed in the rim of the saw blade, each hill and valley having the same radius, producing a sinuous array essentially centered on the rim of the blade. It has been discovered that such a dust and chip minimizer reduces the level of dust and chips produced by the blade and clears the same from the kerf generated in the blade-workpiece interface.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: October 10, 2006
    Assignee: Black & Decker Inc.
    Inventors: Stephen C. Dassoulas, John R. Curtsinger, Stefan Nock, Dean Edwards, Laura Lindberg, legal representative, Steve McClaskey, Michael Lindberg, deceased
  • Patent number: 6065370
    Abstract: A saw blade is stamped with a circumferential edge. At least one gullet and shoulder are formed in the circumferential edge. Likewise, a tooth pocket is formed in the circumferential edge. The tooth pocket is defined by a wall, generally radial to circle, on the shoulder, and a shelf substantially perpendicular to the wall. A tooth is secured, ordinarily by brazing, in the pocket such that a portion of the shelf extends beyond the front face of the tooth towards the gullet so that the tooth can be brazed along its entire lateral edge such that resultant forces in the tooth are transmitted to the body of the blade. After the tooth is positioned into the tooth pocket, the tooth, as well as a projection of the blade shoulder, are ground off so that the tooth and shoulder are flush with one another. Thus, the tooth longitudinal edge is in complete contact with the shoulder wall maximizing its strength.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: May 23, 2000
    Assignee: Black & Decker Inc.
    Inventors: John R. Curtsinger, Nicholas E. Achterberg
  • Patent number: 5896800
    Abstract: A saw blade is stamped with a circumferential edge. At least one deep gullet and shoulder are formed in the circumferential edge. Likewise, a tooth pocket is formed in the circumferential edge. The tooth pocket is defined by a wall, generally radial to circle, on the shoulder, and a shelf substantially perpendicular to the wall. A tooth is secured, ordinarily by brazing, in the pocket such that the thickness of the tooth is substantially equal to the depth of the shelf and the face of the tooth is continuous with the gullet. The tooth may be brazed along its entire lateral edge such that resultant forces in the tooth are transmitted to the body of the blade. After the tooth is positioned into the tooth pocket, the tooth, as well as a projection of the blade shoulder, are ground off so that the tooth and shoulder are flush with one another. Thus, the tooth longitudinal edge is in complete contact with the shoulder wall maximizing its strength.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: April 27, 1999
    Assignee: Black & Decker Inc.
    Inventors: John R. Curtsinger, Nicholas E. Achterberg
  • Patent number: 5758561
    Abstract: A saw blade is stamped with a circumferential edge. At least one gullet and shoulder are formed in the circumferential edge. Likewise, a tooth pocket is formed in the circumferential edge. The tooth pocket is defined by a wall, generally radial to circle, on the shoulder, and a shelf substantially perpendicular to the wall. A tooth is secured, ordinarily by brazing, in the pocket such that a portion of the shelf extends beyond the front face of the tooth towards the gullet so that the tooth can be brazed along its entire lateral edge such that resultant forces in the tooth are transmitted to the body of the blade. After the tooth is positioned into the tooth pocket, the tooth, as well as a projection of the blade shoulder, are ground off so that the tooth and shoulder are flush with one another. Thus, the tooth longitudinal edge is in complete contact with the shoulder wall maximizing its strength.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: June 2, 1998
    Assignee: Black & Decker Inc.
    Inventors: John R. Curtsinger, Nicholas E. Achterberg
  • Patent number: D449769
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: October 30, 2001
    Assignee: Black & Decker Inc.
    Inventor: John R. Curtsinger
  • Patent number: D383368
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: September 9, 1997
    Assignee: Black & Decker Inc.
    Inventors: Nicholas E. Achterberg, David A. Williams, John R. Curtsinger