Patents by Inventor William A. Parkyn, Sr.

William A. Parkyn, Sr. 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).

  • Repair in holes and cracks in clay sewer pipe
    Patent number: 4602659
    Abstract: The repair of a sewer line having a fracture, and employing a liner sleeve and an elastomer sleeve extending about the line sleeve, and a filler slurry, includes:(a) installing the liner sleeve and the elastomer sleeve endwise in the sewer line to locate the two sleeves in bridging relation with the fracture, and(b) displacing slurry into a space formed between the two sleeves to cause the elastomeric sleeve to expand and seal against the sewer line in bridging relation with the fracture.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: July 29, 1986
    Assignees: William A. Parkyn, Sr., Kathleen C. Parkyn
    Inventor: William A. Parkyn, Sr.
  • Repair of holes and cracks in clay sewer pipe
    Patent number: 4601312
    Abstract: The repair of a sewer line having a fracture, and employing a liner sleeve and an elastomer sleeve extending about the line sleeve, and a filler slurry, includes:(a) installing the liner sleeve and the elastomer sleeve endwise in the sewer line to locate the two sleeves in bridging relation with the fracture, and(b) displacing slurry into a space formed between the two sleeves to cause the elastomeric sleeve to expand and seal against the sewer line in bridging relation with the fracture.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: July 22, 1986
    Assignees: William A. Parkyn, Sr., Kathleen C. Parkyn
    Inventor: William A. Parkyn, Sr.