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US 7,438,324 B2Granted
Method and components for repairing broken conduit extending from concrete foundations
OwnerMichael C. Keiperinventor
Life of this patent
Estimating the term…
Abstract
A broken conduit end portion is repaired by reducing its radial wall thickness and attaching thereto a repair coupling that is configured to provide an internal passage therethrough that is not smaller than the internal passages in the broken conduit end portion and in a second conduit that is attached to the repair coupling.
Claims17
An apparatus comprising:
- a conduit embedded in concrete, the embedded conduit having an open end at a surface of the concrete, an outer diameter at the open end, an inner diameter defining a socket extending inward from the open end, and a lesser inner diameter inward of the socket;
- a tubular repair coupling having a male section with an outer diameter equal to the inner diameter in the socket so as to take an installed position fitted closely within the socket, and having a female section with an outer diameter greater than the outer diameter at the open end of the embedded conduit and an inner diameter equal to the outer diameter at the open end of the embedded conduit;
- and
- a new section of conduit having an outer diameter equal to the outer diameter at the open end of the embedded conduit so as to take an installed position fitted closely within the female section of the repair coupling and thereby to serve as an extension of the embedded conduit.
1 more element
An apparatus comprising:
- a conduit embedded in concrete, the embedded conduit having an open end at a surface of the concrete, an outer diameter at the open end, an inner diameter defining a socket extending inward from the open end, and a lesser inner diameter inward of the socket;
- a repair sleeve having a first end portion with an outer diameter equal to the inner diameter in the socket so as to take an installed position fitted closely within the socket, and having a second end portion with an outer diameter equal to the outer diameter at the open end of the embedded conduit;
- and
- a repair collar having a first end portion with an inner diameter equal to the outer diameter at the open end of the embedded conduit so as to take an installed position received closely over the second end portion of the repair sleeve, and having a second end portion with an inner diameter equal to the outer diameter at the open end of the embedded conduit for receiving a new section of conduit that serves as an extension of the embedded conduit.
1 more element
Dependencies are inferred from the claim text.