Air inversion and steam cure of cured in place liners apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 27, 2016
Grant Date -
Oct 10, 2013
app pub date -
Dec 4, 2012
filing date -
Apr 25, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An air inversion and steam cure apparatus for installing a flexible resin impregnated cured in place liner in an existing conduit is provided. The apparatus has a low friction seal between a moving liner and the stationary apparatus gland. The gland is operated and adjusted by displaceable members that move substantially perpendicular to the liner being inverted to engage the moving liner as it passes through the gland. No part of the gland extends into the chamber so that once a pre-shaped gland is adjusted, the pressure on the moving liner is not increased. As the liner reaches the distal end, it enters a sample and porting pipe with an exhaust pipe gland and exhaust pipe and is pierced by a rigid porting tool. Steam is then introduced into the liner to cure the resin and is exhausted through an exhaust hose connected to the porting tool. After cure, steam is replaced with air to cool the liner and the ends are cut to restore service through the existing conduit.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- F16L Class
- 1403 Applications Filed
- 1109 Patents Issued To-Date
- 79.05 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 8 Citation Count
- F16L Class
- 18.70 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 27, 2028 |
