Pipe repair assembly
OwnerDouglas B. Firestoneinventor
Life of this patent
Estimating the term…
Abstract
A weldless pipe repair assembly comprises a cylindrical hub member having a through bore, the hub member being formed in two separable, mating parts for slidable interfitting engagement, a first one of the parts having a longitudinal slot for fitting the part transversely over a pipe in the area of a leak or rupture, prior to sliding the second part into engagement with the first part so that the hub member surrounds the pipe. At least one sealing sleeve is designed to fit in the hub bore to seal the space between the pipe and hub member, the sleeve being slit to allow it to fit over the pipe, and a locking assembly is provided for urging the sleeve into the hub member and sealing the sleeve against the pipe.
Claims9
A pipe repair assembly, comprising:
- an elongate hub member having a through bore size to fit over a pipe and a substantially smooth outer cylindrical periphery;
- the hub member being formed in two separate, mating portions, a first one of the portions having a longitudinal slot for fitting the portion transversely over a pipe, and a pair of part-cylindrical, co-axial cut-outs extending from its inner to its outer surface, one on each side of the slot, and the second portion having a crescent-shaped cross-section for longitudinal sliding engagement with said first portion, the outer surface of the crescent shape comprising means for slidable mating engagement with said part-cylindrical cut-outs to cover the slot so that the hub member surrounds the pipe, the inner surface of the crescent shape comprising a part-cylindrical section of diameter corresponding to that of the inner surface of the first portion to form a continuous cylindrical bore surrounding the pipe;
- at least one sealing sleeve for fitting into the gap between the hub member through bore and the pipe, the sleeve having a slit for allowing it to be fitted over the pipe;
- and
- locking means for urging the sealing sleeve into the hub member through bore and into sealing engagement with the pipe.
Dependencies are inferred from the claim text.