Patents by Inventor Geoffrey A. Boundy

Geoffrey A. Boundy 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).

  • Gradient measuring devices
    Patent number: 4543731
    Abstract: A gradient measuring device incorporating a conventional level such as a spirit level and having an end gauge member which is rotatable providing a lowermost reference by which when the level is horizontal there is a gauge reference to a slope position between the lowermost point on the gauge and the further lowermost end of the level.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: October 1, 1985
    Inventor: Geoffrey A. Boundy
  • Pipe sealing apparatus
    Patent number: 4040450
    Abstract: A drain pipe sealing device wherein a sealing head is supported at the end of a support arm whereby the sealing head can be orientated so as to facilitate entry of the sealing head by way of a vertical riser and then re-orientated to assist in sealing.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: August 9, 1977
    Assignee: Glenys Irene Boundy
    Inventor: Geoffrey A. Boundy