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| Number | Title | Issue Date |
| 7347218 | Roof cap removal tool The present invention provides a method and apparatus for removing a test plug from a vent when positioned at a remote location with respect to the vent. The apparatus includes a cover having a handle section and base, the cover being visible from a remote location ... | 03/25/2008 |
| 6983759 | Valve and method for repairing a valve under pressure A valve includes a valve body with a hollow valve body interior and an opening-defining portion that defines an access opening. The opening-defining portion is arranged as a connection-facilitating structure for facilitating the fluid-tight connection of a separate ... | 01/10/2006 |
| 6851446 | Adaptor especially for use in connection with swimming pool return lines Adaptor assemblies are detailed. Preferably for connecting automatic pool cleaning apparatus to return lines of swimming pool water-circulation systems, the assemblies utilize spurs that may affirmatively grip, or cut or gouge into, the return lines to retain the ad... | 02/08/2005 |
| 5893686 | Pipe tapping drill attachment This invention relates to a housing having a shaft with a drill bit for tapping a pressurized fluid pipe. A saddle having a valve is attached to a pipe. A housing having a shaft passing therethrough is threaded to the valve. A drill bit is attached to one... | 04/13/1999 |
| 5511578 | Tool for installing a stopper in a gas conduit wall The tool of the invention is used to insert and secure a stopper plug to close a hole in the wall of a pipe carrying fluid under pressure. This permits removal of a defective pipe fitting such as a tee or a valve. The stopper plug includes a toggle or anc... | 04/30/1996 |
| 5490537 | Prosthesis air valve assembly and tool therefor An improved air valve assembly for mounting in a prosthesis, such as an artificial leg, and a spanner-type tool for mounting and removing the valve assembly. The valve assembly includes a housing to be mounted in the prosthesis with gaskets located on eac... | 02/13/1996 |
| 5464036 | Orifice fitting with venting passage and injection seal An orifice fitting for measuring the flow of gas through a pipeline in which the orifice fitting has a body including a pair of opposing body plates that define a body chamber. Passing through both body plates is an aligned flow passage for attachment to ... | 11/07/1995 |
| 4901752 | Apparatus for maintenance of ball valve Apparatus for maintenance of the moveable pipe sleeves (52), bearing surface and seals of a ball valve. The apparatus has a bonnet (7) designed to be secured to and form a tight connection with a valve flange (53) and fastened to the underside of the bonn... | 02/20/1990 |
| 4883085 | Method of installing a stopper in a fitting and apparatus therefor A method and apparatus for installing a plastic fitting and a line stopping mechanism to a main includes a stopper shaft which is used to remove a completion plug in the fitting during installation, and to control the line stopper mechanism once it is ins... | 11/28/1989 |
| 4507841 | Removal and reinstallation of bottom entering agitator seals An improved method of removing a seal unit from a process vessel bottom entering agitator assembly and reinstalling a seal unit therein wherein a selectively elevatable table which is movably mounted on a pair of horizontal rails is utilized in lowering a... | 04/02/1985 |
| 4239055 | Pressure plug This invention relates to a pressure plug for sealing a service valve fitting aperture in a fully pressurized fluid transmission pipeline to enable service valve fittings to be replaced without interrupting the flow of fluid in the transmission pipeline. ... | 12/16/1980 |
