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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7757706 | Backwater valve assembly with removable valve member A backwater valve assembly includes a valve housing, a valve member and a servicing tool. The valve housing has an internal ledge within its interior on which is positioned a retainer clip oriented in vertical alignment with a riser. The valve member has a first eng... | 07/20/2010 |
| 7353838 | Top mounted faucet assembly with air gap A faucet assembly includes a base having first and second ends, a sidewall extending between the ends, a mounting bore extending from the first end, a permeate water spout port extending from the second end, and a valve assembly bore extending from the sidewall and ... | 04/08/2008 |
| 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 |
| 7308905 | Self-extracting service module for piping infrastructures A self-extracting service module for piping infrastructures comprises a platform on which is mounted equipment for controlling and or monitoring the flow of liquid or gaseous media throughout the piping infrastructures. A first remote-controllable pipe coupling syst... | 12/18/2007 |
| 7306010 | Ball valve with snap-in stem A ball valve has a ball with resilient, opposed facing spaced-apart locking arms which engage a stem having outwardly projecting flanges to allow the stem to be inserted externally into the valve body and snap-locked to the resilient opposed locking arms of the ball... | 12/11/2007 |
| 7296587 | Self-extracting service module for piping infrastructures A self-extracting service module for piping infrastructures comprises a platform on which is mounted equipment for controlling and or monitoring the flow of liquid or gaseous media throughout the piping infrastructures. A first remote-controllable pipe coupling syst... | 11/20/2007 |
| 7261117 | Diverter valve assembly According to one embodiment of the present invention, a diverter valve is comprised of a valve body with multiple inlet and outlet ports. The diverter valve is further comprised of two ceramic valve sections that can be rotated with respect to each other to allow th... | 08/28/2007 |
| 7210500 | Methods and apparatus for mechanically adjusting a null offset in a torque motor of a servovalve A servovalve assembly includes a motor having a flapper shaft. A flapper couples to a first end of the flapper shaft such that the flapper shaft orients the flapper between a first nozzle and a second nozzle of the servovalve assembly. An adjustment assembly adjusts... | 05/01/2007 |
| 7175158 | Tub valve having versatile mounting structure A valve assembly for installation into deck-mounted tubs includes a valve body, a top plate that engages with the valve body, a bottom plate, and an adjustment member that bears against the valve body and engages with the bottom plate. The adjustment member is acces... | 02/13/2007 |
| 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 |
| 6973939 | Horizontal-flow trap and housing assembly with odor preventing closure mechanism An exit opening (78) in a cartridge (22) is alignable with an opening (48) in a housing (32) for communication to an external drain. The cartridge and the housing have positions of final secured and initial unsecured interconnections, whe... | 12/13/2005 |
| 6955183 | Pressure tank valve socket Embodiments of a pressure tank valve socket are disclosed which may be used to safely remove the valve from a propane or other pressure tank without damaging the valve. The pressure tank valve socket applies force only to the sturdiest part of the valve and, thus, p... | 10/18/2005 |
| 6929024 | Threaded device for removing a fractured cartridge from a valve body An improvement for use with a hand operated wrench primarily intended for removing a cartridge from an opening, with such wrench having a slotted aperture at one end. This improvement comprises an elongate threaded device having a mounting shaft at one end, and tape... | 08/16/2005 |
| 6901948 | Liquid fertilizer distribution system and method A removable flow restrictor 750 and a corresponding method for regulating flow through a fluid fertilizer distributor 700 are provided. A supply inlet port 712 is in fluid communication with a plurality of fluid outlet ports 716. The flow... | 06/07/2005 |
| 6901947 | Rapid evacuation and charging system, and apparatus and methods relating thereto A system for performing rapid charging and evacuation of systems that contain a fluid, such as cooling systems on refrigeration products. In addition, the invention relates to methods of accomplishing rapid charging and evacuation, as well as to tools that form part... | 06/07/2005 |
| 6899120 | Yard hydrant A yard hydrant has an elongated wet pipe with a plunger that seals against the inside of a well casing. Lifting a pivoting handle at the top of the wet pipe lowers the wet pipe which opens a normally closed supply valve. Pressurized water can then flow up the wet pi... | 05/31/2005 |
| 6889702 | Replaceable valve seat ring with enhanced flow design A replaceable valve seat ring for a valve assembly has an annular ring body and an open flow passage extending through the ring body. A seating surface is provided on the ring body adjacent one end of the flow passage. A tool accepting region of the flow passage is ... | 05/10/2005 |
| 6886584 | Method and assembly of replacing receptacle seal A method and assembly of replacing a receptacle seal is provided. A seal removal kit includes a poppet depressing member, retaining collar, seal removing tool, and a seal insertion sleeve that allows the seal to be replaced without removal of the receptacle or porti... | 05/03/2005 |
| 6840280 | Flow through ultrasonic processing system These and other objects of the present invention are achieved by provision of a flow through ultrasonic system for facilitating the flow of flow-resistant materials. The system includes a supply of material and an ultrasonic horn having at least one passage extendin... | 01/11/2005 |
| 6840282 | Mechanisms to set a hollow device into and to retrieve said hollow device from a flow pipe A method to set a hollow device into an undersea flow pipe uses a flexible pig driven by a flow flowing into said flow pipe to displace a hollow device to a point where a stop means halts a displacement of said hollow device, thereby setting said hollow device into ... | 01/11/2005 |
| 6810903 | Conduit flow controller The invention is an improved conduit flow controller for selectively controlling the flow of fluid through an elongated conduit. The conduit has an aperture defined by a continuous peripheral edge in the sidewall of the conduit. An elongated housing surrounds the ap... | 11/02/2004 |
| 6698449 | Replaceable valve seat ring with enhanced flow design A replaceable valve seat ring for a valve assembly has an annular ring body and an open flow passage extending through the ring body. A seating surface is provided on the ring body adjacent one end of the flow passage. A tool accepting region of the flow ... | 03/02/2004 |
| 6688326 | Locking fire hydrant A locking fire hydrant includes a fire hydrant body having an outlet port, a valve access hole, and an outer surface with a recess defined therein. The recess is configured to receive a locking cap for closing off the outlet port and the valve access hole... | 02/10/2004 |
| 6679283 | Valve inspection chamber A valve inspection chamber includes a housing having a vertical inspection and valve retrieval opening. A valve cassette is provided which includes a frame and a valve member movable relative to the frame between an open position and a closed position. A ... | 01/20/2004 |
| 6648009 | Tamper-proof ball valve A tamper-resistant by-pass valve prevents an unauthorized user from tampering with the valve when it is in the closed position to block gas flow to a meter being replaced or repaired.... | 11/18/2003 |
| 6644339 | Horizontal-flow trap and housing assembly with odor preventing closure mechanism An odor trap apparatus (20) includes a housing (32) having an interior and an opening (48) extending from the interior to the external drain, and a cartridge (22). The cartridge has an exit opening (78) disposed to communicate with the housing opening. Th... | 11/11/2003 |
| 6640826 | Systems and methods for servicing ball valves A temporary ball valve support structure is utilized to apply pressure to the ball in a ball valve so that a seal is maintained between the ball and the upstream seal member in the ball valve to prevent fluid from leaking from the valve while the valve is... | 11/04/2003 |
| 6588447 | Break-away water meter register retaining ring A break-away ring manufactured from a frangible material and removably received by a water meter of the type used to measure the volume of water consumed by a residence or a commercial facility. The break-away ring applies a holding pressure for retaining... | 07/08/2003 |
| 6571819 | Method of installing valve seals and a two-piece tool therefor A method of installing a valve seal at the base of a valve stem of an automotive internal combustion engine is disclosed. A two-piece tool consisting of first and second tool parts is employed for carrying out the method. The first tool part is used to pu... | 06/03/2003 |
| 6553969 | Device for assembling and dismantling a fuel injection valve An assembling device for assembling and disassembling of a fuel injector (3) in a mounting hole (3) of a cylinder head in an internal combustion engine has at least two contact surfaces engaging in the fuel injector. A hold-down surface is formed on each ... | 04/29/2003 |
| 6470907 | Existing pipe cut-off method, existing pipe slitting method, piping structure, and valve insertion method for inserting a valve in a line without stopping passage of water or fluid The invention relates to an existing pipe cut-off method and slitting method, by which an existing pipe made of cast iron and steel can be cut off. With a cut-off method according to the invention, first, a part of an existing pipe 1 is enclosed and seale... | 10/29/2002 |
| 6378550 | Ball valve extractor An apparatus and process for removing a ball valve is provided. The ball valve removal tool provides a handle sliding along the length of a shaft. One end of the shaft is secured within an interior cavity of a ball valve while the opposite end of the shaf... | 04/30/2002 |
| 6360770 | Modular lavatory faucet spout mounting A faucet spout fixture provides for spout mounting and removal from above a supporting surface such as a sink deck, without disconnection of the water supply conduits beneath the sink deck. The fixture includes a faucet spout which has a water passage and... | 03/26/2002 |
| 6237168 | Sink drain assembly including sink seal cap removal tool A sink drain assembly includes a waste plug, a drain cap and a sink seal cap. The sink seal cap is formed and adapted to be attached to a sink drain conduit and to be mounted thereon in a sink drain opening. The waste plug and drain cap are detachably sec... | 05/29/2001 |
| 6227225 | Method for pulling a valve seat An apparatus for pulling a valve member from a pump. The apparatus comprises a puller stem containing external threads and a bushing having an inner surface, and wherein the puller stem is disposed through the bushing. Also included is a first halve nut c... | 05/08/2001 |
| 6186164 | Rotary valve comprising a drawing device A rotary valve includes a housing having a housing bore which can be laterally closed by bearing covers. Inside the housing, a cellular wheel is rotatably supported. A guiding device extends in an axial direction of the cellular wheel and serves for drawi... | 02/13/2001 |
| 6164317 | Sewer pipe cover assembly A cover assembly for a sewer vent pipe having a dome-shaped cap member with a plurality of brackets affixed to the inner surface thereof and extending to surfaces in a common plane for supporting the cap upon the open, upper end of the sewer pipe. A circu... | 12/26/2000 |
| 6152165 | Valve core mounting and dismounting tool A tire air valve (core) mounting and dismounting tool 20 includes a tool head portion 21, a shank portion 22 and a grip portion 23. The tool head portion 21 has a slot 32 for seizing and holding a valve core head portion 16, an axial bore 33 for accepting... | 11/28/2000 |
| 6152195 | Filling machine removable valve (BARB-LOC) A container filling machine and removable valve assembly having a liquid retention bowl and at least one filler valve assembly depending therefrom, the bowl having at least one bottom opening, a periphery around the opening, and a shoulder at the peripher... | 11/28/2000 |
| 6142166 | Method and tool for plugging a service connection in a gas main A tool and method for plugging a service connection to a gas main in preparation for removal of the service tee removes the perforator, mills the hole in the main to provide a smooth seat for a sealing plug, and inserts a gas-tight sealing plug into the h... | 11/07/2000 |
