Patents Assigned to Kathleen C. Parkyn
  • 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.