Matches 1 - 15 out of 15
Match Document Document Title
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
3473555 FLUID FLOW PRECLUDING TOOL  
3275023 Temporary sealing means for conduit under pressure  
3198206 Piercing valve  
3160169 Check valve unit for a diaphragm type pressure regulator  
Matches 1 - 15 out of 15