Underground pipe repair device with radial stepped annular spacer and related systems and methods
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United States of America Patent
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Apr 3, 2018
Issued Date -
N/A
app pub date -
Apr 12, 2017
filing date -
Apr 12, 2017
priority date (Note) -
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Abstract
An underground pipe repair device is for a joint between a service pipe and a branch pipe. The underground pipe repair device may include a first T-shaped joint liner having a base portion extending laterally in the service pipe, and an arm portion extending vertically into the branch pipe, and a second ring-shaped liner under the first T-shaped joint liner and aligned with an opening in the branch pipe. The underground pipe repair device may include an annular spacer aligned with the opening in the branch pipe and being between the first T-shaped joint liner and the second ring-shaped liner. The annular spacer may include a radial step, and the second ring-shaped liner may be coupled to the base portion of the first T-shaped joint liner to retain the annular spacer.
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