Patents by Inventor Alan Plumtree

Alan Plumtree 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).

  • Publication number: 20080279622
    Abstract: A wedge anchor comprising a barrel having a wedge receiving face opposite a rod receiving face, a passage extending therethrough between the wedge receiving face and the rod receiving face, the passage narrowing toward the rod receiving face and having an axial cross-sectional profile defining a convex arc; and, a plurality of wedges insertable into the passage, each of the wedges having a respective inner wedge face for defining a rod receiving passage for receiving a rod and an outer wedge face, opposite the inner wedge face, in axial cross-section having a profile complementary to the convex arc.
    Type: Application
    Filed: October 3, 2003
    Publication date: November 13, 2008
    Applicant: UNIVERSITY OF WATERLOO
    Inventors: Adil Al-Mayah, Khaled Soudki, Alan Plumtree
  • Publication number: 20070007405
    Abstract: A wedge anchor for holding a rod under a load is provided. The wedge anchor comprises a barrel comprising a wedge receiving face opposite a rod receiving face. A barrel passage extends therethrough between the wedge receiving face and the rod receiving face. The passage narrows toward the rod receiving face and has an axial cross-sectional profile defining a convex arc having a barrel centre of radius of curvature. The wedge anchor also comprises a plurality of wedges that are insertable into the passage. Each of the wedges comprises an inner wedge face for defining a rod receiving passage for receiving the rod and an outer wedge face, opposite the inner wedge face, in axial cross section having a profile complementary to the convex arc. The outer wedge face has a wedge-face centre of radius of curvature, which is offset relative to the barrel centre of radius of curvature.
    Type: Application
    Filed: June 16, 2006
    Publication date: January 11, 2007
    Inventors: Adil Al-Mayah, Khal Soudki, Alan Plumtree