| Patent Number |
Title Of Patent |
Date Issued |
| 6435566 |
Internal conduit sealing member and band |
August 20, 2002 |
| The present invention provides an internal conduit seal for conduits and pipes having an elongated elastomeric seal with first and second seal segments adjacent to the edges of the seal. The sealing segments are made up of a plurality of sealing ribs and restraining members placed ex |
| 6126206 |
Internal conduit sealing member and band |
October 3, 2000 |
| The present invention provides an internal conduit seal for conduits and pipes having an elongated elastomeric seal with first and second seal segments adjacent to the edges of the seal. The sealing segments are made up of a plurality of sealing ribs and restraining members placed ex |
| 5549334 |
Retaining band assembly for internal pipe seals |
August 27, 1996 |
| A retaining band assembly is provided for use in retaining a seal inside a pipe. The retaining band assembly includes a retaining band having a first end portion and a second end portion. The first end portion of the retaining band has a flat surface and a first edge and the second end |
| 5536457 |
Joint sealing method |
July 16, 1996 |
| A method for installing a mold apparatus in a manhole assembly and filling the mold apparatus with a sealing material to establish a solid bond that blocks inflow of fluids at the joint between abutting components of the manhole assembly includes providing an open ring, a retaining band |
| 5431553 |
Manhole seal molding apparatus |
July 11, 1995 |
| An apparatus is provided for installation in a manhole assembly. The mold apparatus is filled with a sealing material to establish a solid bond that blocks inflow of fluids at the joint between abutting components of the manhole assembly. The apparatus includes an open ring, a retaining |
| 5385431 |
Flow conduit for traversing a traffic way |
January 31, 1995 |
| An apparatus is provided for conveying flow across a traffic way between a first flow conduit and a second flow conduit. The apparatus includes a ramp member defining an interior region, a first coupling attachment coupling to the first flow conduit for delivering flow to the interior |
| 5201600 |
Manhole sealing apparatus and method |
April 13, 1993 |
| An apparatus and method is provided for providing a mold that can be filled with sealing material to establish a barrier seal on top of a manhole to block unwanted inflow of groundwater into the manhole through a space or gap between either the manhole and manhole frame or a pair of adja |
| 5048793 |
Pipe jack |
September 17, 1991 |
| An apparatus is provided for handling a pipe to be used in a pipeline replacement operation or the like. The apparatus includes upper and lower semicircular pipe-gripping sections slidably received on a base and drive pistons connected to the lower pipe-gripping section for moving the |
