Replacement fitting for rigid, plastic pipes
AssigneeDuane D. Robertson
InventorDuane D. Robertson
Life of this patent
Estimating the term…
Abstract
Replacement fittings for substantially rigid pipes. Each fitting preferably includes a main body with telescoping, sleeve members mounted on it. The sleeve members can be individually slid along the main body but cannot be removed from it. In this manner, the preferred fittings of the present invention can be handled as a single unit and all of the linked pieces will stay together and cannot be inadvertently left behind. They also cannot be accidentally lost or dropped on the way to the job site or during the repair operation. The various pieces of the fittings employ tapering surfaces that not only ensure the pieces will stay together while the fittings are being manipulated into position but also aid in creating the strongest bonds and seals with the pipes.
Claims29
A pipe fitting (2) for a substantially cylindrical pipe (5), the pipe extending along and about a first axis (23) and having inner and outer cylindrical, substantially smooth, non-tapered, non-threaded surfaces with respective inner and outer, constant diameters, the pipe further having at least one open end (3′),
- said pipe fitting (2) having a main body (4) extending at least in part along a second axis (8) and a sleeve member (6) extending about said part of said main body and mounted for sliding movement relative to said main body between at least first and second positions spaced from each other along said second axis (8), said main body having means for preventing said sleeve member from being slid along said second axis beyond said first and second positions to thereby maintain said slidable sleeve member on said main body and wherein said part of said main body extends for a first distance along said second axis between two locations and said sleeve member extends between two ends (14, 38) along said second axis for a second distance less than said first distance, said sleeve member being positionable about said part with the ends (14, 38) of said sleeve member between said two locations,
- said main body (4) being positionable adjacent the open end (3′) of said pipe (5) with said first (23) and second (8) axes substantially co-linear, said sleeve member (6) having two open ends (14, 38) spaced from each other along the second axis, said sleeve member further including a substantially smooth, non-threaded inner surface (34) tapering inwardly substantially from one (38) of the open ends of said sleeve member toward the other open end (14) thereof, said inner surface of said sleeve member having an inner diameter (42) adjacent the one open end (38) thereof greater than the outer diameter (13) of the outer cylindrical surface of said pipe, said inner surface (34) tapering down to a diameter (44) less than the outer diameter of the outer cylindrical surface of said pipe, said sleeve member in said second position having at least a section of said tapering inner surface (34) of said sleeve member extending about the open end (3′) of said pipe and about at least a portion (21) of the outer surface of said pipe (5) adjacent the open end (3′) thereof.
A pipe fitting (2) for a substantially cylindrical pipe (5), the pipe extending along and about a first axis (23) and having inner and outer cylindrical, substantially smooth, non-tapered, non-threaded surfaces with respective inner and outer, constant diameters, the pipe further having at least one open end (3′),
- said pipe fitting (2) having a main body (4) with at least a part thereof extending along and about a second axis (8) and having at least first (4′) and second (4″) portions, said first portion (4′) having a substantially cylindrical outer surface, said second portion (4″) being integral with said first portion and extending along said second axis (8) away from said first portion (4′) toward the open end (3′) of the pipe with said first (23) and second (8) axes substantially co-linear, said second portion (4″) having at least one open end (12) and an outer surface (30) tapering outwardly along said second axis from said first portion (4′) substantially to the open end (12) of said second portion (4″), said tapering outer surface (30) of the second portion having a maximum outer diameter (48) adjacent the open end (12) of the second portion (4″) no greater than the outer diameter (13) of the outer cylindrical surface of the pipe (5),
- said pipe fitting further including a sleeve member (6) extending about said part of said main body (4) and mounted for sliding movement relative to said main body between at least first and second positions spaced from each other along said second axis (8), said sleeve member having first (14) and second (38) open ends spaced from each other along said second axis (8) and having a substantially smooth, non-threaded inner surface (34) extending along and about said second axis (8) substantially between the open ends (14, 38) of the sleeve member (6),
- said main body (4) being positionable adjacent the open end (3′) of said pipe (5) with said first (23) and second (8) axes substantially co-linear, said sleeve member (6) in said second position having at least a section of the inner surface (34) of the sleeve member extending about the open end (3′) of said pipe and about at least a portion (21) of the outer surface of the pipe (5) adjacent the open end (3′) thereof.
Dependencies are inferred from the claim text.