Patent ID: 6663319
Filing Date: 2003-12-16
Classification: F16L

Abstract:
A sewer lining system for allowing a user to safely and efficiently line an existing sewer structures with a degradation resistant material comprising, in combination:a plurality of longitudinal liner supports with each support being fabricated of a rigid material with a generally rectilinear configuration and having an outer side and an inner side with the outer side being of a first width of between about 1 Â½ inches and 3 Â½ inches and two lateral sides disposed between the inner side and the outer side with each lateral side being of a second width of between about 3 Â½ inches and 6 Â½ inches with each outer side having a smooth flat surface of a first length and each inner side having the same first length along with an inner side third width being slightly less than the width of the outer side to allow the supports to be aligned side by side to form an arcuate shape, and with each inner side having a plurality of tabs protruding inwardly there from with each tab aligned along the long axis of the liner support with an upper edge with a notch and a lower edge with a notch, with each tab having a bolt hole there through, each liner support having a plurality of spacer holes through the center of the inner side along the length of the liner support; a plurality of arcuate inner supports, each fabricated of a rigid material with each having a convex outer side and a concave inner side and two side edges disposed there between and each having a thickness to fit securely within the notch of the tab, with each arcuate inner support having a plurality of threaded bolt holes running the thickness of the support from inner side to outer side; a plurality of arcuate support locks with each lock fabricated of a rigid material and having a inner surface and an outer surface with a parallel upper edge and a parallel lower edge there between, each support lock being generally arcuate shaped with a convex outer surface and a concave inner surface approximating the curved surfaces of the arcuate inner supports, with each arcuate support lock having a plurality of smooth bolt holes there through; a plurality of bolts sized to be threadedly received into the threaded bolt holes of the arcuate inner supports with the bolts coupling the arcuate inner supports to the arcuate support locks; a plurality of spacer pin subassemblies with each subassembly having a spacer pin and a pin locking collar and a plurality of locking bolts, the spacer pin fabricated of rigid material and having a outer diameter sized to fit securely within the spacer hole of the liner support, with the pin locking collar fabricated of a rigid material having a central aperture there through sized to securely receive a spacer pin, with the outer diameter sized to be between about 100 and 300 percent larger than the outer diameter of the spacer pin with the collar having a plurality of radially oriented threaded locking bolt holes, with locking bolts sized to be threadedly received and securely held within the threads of the locking bolt holes of the collar; a plurality of pipe spacers with each pipe spacer having a flange end and a pipe end; and, a sewer liner fabricated of a flexible degradation resistant material having an outer surface and an inner surface with the outer surface having a plurality of outwardly extending binding projections by which the liner may be coupled with a fresh pour of concrete, with the liner being formed from a sheet of said material with the liner being coupled to itself to form a liner tube having a constant cross sectional diameter with the liner tube having an open lower end and an open upper end.