Patents by Inventor Charles L. Purdy

Charles L. Purdy 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: 8534132
    Abstract: The present invention may be used for measuring the tension in an elongated rod like body that may be fastened at an anchor end to an anchor element and that may be disposed at an accessible end relative to a securing element. A representative bolt may be secured at a first end to an accessible end of the rod like body. A housing may be positioned over the representative bolt to abut the securing element at an open first end and to allow the representative bolt to extend outwardly through a hole in a walled second end. A nut may be threaded on the representative bolt and tightened against the walled second end. A transducer may be attached to a second end of the representative bolt. The transducer may be activated to measure the length of the representative bolt. A data base of bolt length and bolt stress measurements may be used to correlate the stress level of the elongated rod like body.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: September 17, 2013
    Inventor: Charles L. Purdy
  • Patent number: 8220214
    Abstract: The present invention may be used for support of a structure attached to a foundation by a structure base flange. A weight distribution element may have a cross-section form that may be generally a trapezoid with an upper surface a lower surface, an outer side surface and an inner side surface. The outer side surface, and inner side surface may be inclined toward a centerline of the cross-section form transitioning from the bottom surface to the top surface. The weight distribution element may be formed of a material that may be moldable to a solid form having multiple bolt through-holes positioned for the weight distribution element to be disposed on bolts to be positioned adjacent a bolt support plate. The material may have a compression and strength composition sufficient to support a structure.
    Type: Grant
    Filed: May 2, 2009
    Date of Patent: July 17, 2012
    Inventor: Charles L. Purdy