Patents by Inventor Angus J. Clarke

Angus J. Clarke 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).

  • Maintaining the shape of holes
    Patent number: 4188159
    Abstract: In order to maintain the shape of a hole, such as a grave, dug in the ground, an inflatable bag is lowered into the hole and then inflated to a low pressure so as substantially to fill the hole, thus maintaining the sides of the hole against subsidence and also largely preventing water seeping into the hole. A protective cover is then placed over the hole and means are provided for anchoring this cover to the bag itself, which is wedged against the sides of the hole.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: February 12, 1980
    Inventors: Stanley W. Clarke, Angus J. Clarke