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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 |
| 8186383 | Two eductor/four-way selector valve assembly A selector valve assembly for use in conjunction with an eductor dispensing system which reduces the incidence of product carry-over when the valve is moved from one position to another. The selector valve assembly also reduces the incidence of improper dispensing. ... | 05/29/2012 |
| 8127793 | Rotary valve apparatus A rotary valve apparatus includes a casing having a fluid passageway, a rotor rotatably mounted in the casing and configured to control, by rotation thereof, a flow state of fluid flowing in the fluid passageway, a drive mechanism for rotating the rotor, and a lock ... | 03/06/2012 |
| 8082951 | Diverter valve apparatus and method Embodiments of the invention provide a diverter valve and a method of providing debris resistance in a diverter valve. The diverter valve can include a valve housing defining a valve chamber and at least an inlet port and an outlet port. The diverter valve can inclu... | 12/27/2011 |
| 8051877 | Diverter valve and assembly A diverter valve assembly is used in a material handling system and may include a diverter valve, an actuator, a chute, and a material handling line. The diverter valve has a body that defines an inlet bore and a pair of outlet bores. A rotor is located within the b... | 11/08/2011 |
| 7954513 | Spray application rate regulating valve A regulator valve includes an inlet coupled for receiving a spray solution delivered by a fixed displacement pump coupled to a solution tank. Located in the valve body so as to divide the solution received at the inlet between a bypass or tank port of the regulator ... | 06/07/2011 |
| 7942164 | Dual-purpose gas stove switch A dual-purpose gas stove switch includes a valve body and a valve seat. The valve body includes an inlet passageway, an interior passageway, a nozzle having a mouth, a compensation nozzle, and a compensation passageway in communication with the compensation nozzle. ... | 05/17/2011 |
| 7870870 | Multiport vertical axial valve with sealing rotor This invention discloses an axial multiport rotary valve capable of accomplishing the simultaneous interconnection of a plurality of conduits in accordance with a previously determined cycle, where any conduit communicates with no more than one other conduit at any ... | 01/18/2011 |
| 7857002 | Method for isolating an appliance in a plumbing system A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the va... | 12/28/2010 |
| 7849879 | Powder paint recirculation block assembly A powder paint recirculation block assembly for use in a powder paint transfer assembly, and a method of operation, is disclosed. The recirculation block assembly includes a powder paint recirculation block body having an intake flow passage directing flow to an app... | 12/14/2010 |
| 7836914 | Switching device and apparatus for controlling flow of a fluid A switching device for a fluid distribution set presenting a deformable portion having a first port, a second port, a third port and a fourth port, is disclosed. The switching device comprises an active portion adapted, in use, for clamping the deformable portion of... | 11/23/2010 |
| 7789106 | Hot water fluid isolation valve A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the va... | 09/07/2010 |
| 7762280 | Valve for tankless water heater A valve assembly is provided having two valve sections, each having a tubular passageway portion and when joined together, defining a ball cavity in communication with the tubular passageways. One of the body sections is provided with an inlet/outlet in communicatio... | 07/27/2010 |
| 7699076 | Valve assembly A valve assembly for plumbing installations. The valve assembly has a unitary valve body with three interconnected ports and a fluid control mechanism. Connector portions are formed about each port of the unitary valve body to thereby enable connection of the valve ... | 04/20/2010 |
| 7690397 | Digital rotary control valve A valve includes a body having an interior and defining at least one inlet passageway and discharge passageway. The valve also includes a flow diverter disposed within the body between the inlet and discharge passageways to receive a fluid from the inlet passageway ... | 04/06/2010 |
| 7665483 | Motorized shower diverter system A motorized shower water diverter valve for a handheld shower is connected to a shower water inlet pipe in lieu of a conventional showerhead. A conventional showerhead is then connected to one of two valve outlets and a hose for the handheld shower is connected to t... | 02/23/2010 |
| 7644730 | Method for isolating an appliance in a plumbing system A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the va... | 01/12/2010 |
| 7631662 | Hot/cold fluid isolation valve A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the va... | 12/15/2009 |
| 7621295 | System for controlling fluid flow to an appliance A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the va... | 11/24/2009 |
| 7584767 | Connector A connector has a connection port closed by a sealing member. The connection port is attached to a first body portion which in turn is connected to a second body portion by an elastic bellows. When a Luer connector is withdrawn from the port, the bellows first exten... | 09/08/2009 |
| 7581561 | Connector A connector, for example a Luer connector, has a sealing element such that when a connection is made to the connector, the sealing element is displaced into the connector, opening a fluid flow channel through the connector. The sealing member may include a slit on a... | 09/01/2009 |
| 7546851 | Change valve for an air compressor A change valve for an air compressor is combined with the vent tube of an air compressor, including a connector, a valve base, a valve body, an anti-leak gasket, a sleeve and a button. The valve base has at least two connect tubes, with a guide tube connected to eac... | 06/16/2009 |
| 7543605 | Dual recycling/transfer furnace flow management valve for low melting temperature metals A furnace flow control valve for use within a bath of molten metal. The flow control valve includes a vertically-disposed elongated tubular stator, which is configured to receive flow from a molten metal pump. The valve has a rotor which is sealing rotatable within ... | 06/09/2009 |
| 7503345 | Flow control apparatus The invention is a flow controller attachable to a water supply. The controller has a body with inlet and outlet connections and a control element positioned between the inlet and outlet. The controller has an actuator extending from the control element that permits... | 03/17/2009 |
| 7448410 | High differential pressure, low torque precision temperature control valve A high differential pressure, low torque precision temperature control valve is disclosed herein. This valve is trunnionated with stem components that are separable from the plug for ease of maintenance and manufacturability and thus reducing the need to remove the ... | 11/11/2008 |
| 7428813 | Internal combustion engine comprising an exhaust gas turbocharger In an internal combustion engine having an exhaust gas turbocharger with an exhaust gas inlet structure including two exhaust gas flow passages in communication with two exhaust ducts via a rotary cylinder valve for controlling the exhaust gas flow, the valve includ... | 09/30/2008 |
| 7426939 | Rotatable valve A rotatable valve allows the flow of a fluid to be switched between at least two different paths by rotating an element within the valve. Advantageously, both the housing of the valve and the rotatable element within the housing are formed of glass, making the valve... | 09/23/2008 |
| 7409966 | Ball valve A ball valve includes a valve seat having a chamber therein and bores communicated with the chamber, a ball, which has a plurality of channels, received in the chamber, a shaft connected to the ball, and a plurality of lids connected to the valve seat to close the b... | 08/12/2008 |
| 7373953 | Valve assembly A valve assembly for plumbing installations. The valve assembly has a unitary valve body with three interconnected ports and a fluid control mechanism. Connector portions are formed about each port of the unitary valve body to thereby enable connection of the valve ... | 05/20/2008 |
| 7373954 | Multi-ways water distributing device A water distributing device has one input pipe and two output pipes; a casing, and a turning rod located in the casing and turnable in the casing so as to provide a discharge of water in a first direction, a discharge of water in a second direction, a discharge of w... | 05/20/2008 |
| 7370672 | Diverter valve A diverter valve is disclosed and may comprise an actively cooled valve actuation section, an actuator, and a valve section comprising a rotationally actuated valve plate that is structured to be rotationally actuated by the actuator to direct flow wherein the actua... | 05/13/2008 |
| 7360595 | Method and system for underground treatment of materials A method for underground treatment of subsurface materials comprises providing an injection pattern and a recovery pattern, the injection pattern and the recovery pattern located proximate to a subsurface treatment zone and at least one of the injection pattern and ... | 04/22/2008 |
| 7360554 | Integrated gas meter bar device and locking shut-off valve A control valve assembly and for a gas delivery system is disclosed comprising a valve housing and piping combination adapted to mate with a gas meter outlet, the valve including a main inlet and an auxiliary inlet for bypassing the main inlet, and a poppet disposed... | 04/22/2008 |
| 7357370 | Detent apparatus for water temperature regulation of induction faucets A detent apparatus for water temperature regulation of induction faucets includes a mixer located in a faucet and a swiveling mechanism located in the mixer. The swiveling mechanism has a rotary valve and a handle located outside the mixer and the faucet. The handle... | 04/15/2008 |
| 7350765 | Double-stop floating ball valve Valve assemblies and methods of designing valve assemblies having a valve ball, an upper seat, and a lower seat. When fluid pressure is applied to the valve ball, the valve ball will float in the axial direction between an upper position, a neutral position, and a l... | 04/01/2008 |
| 7347048 | Internal combustion engine comprising an engine braking arrangement In an internal combustion engine comprising an engine braking arrangement including a constant throttle valve, an exhaust gas turbocharger with a variable turbine guide vane structure and a power turbine connected to an exhaust tract and a compressor connected to an... | 03/25/2008 |
| 7347219 | Meter bar and metering system A meter bar and meter bar system are provided for directing a fluid. The meter bar includes a first portion, a second portion and a bypass path extending between the first and second portions. The first portion includes a first service port, a first meter port and a... | 03/25/2008 |
| 7341662 | Distribution and collection headers for a filter bed A filtration vessel has an inlet for inflow into the filtration vessel of liquid media to be filtered, a body of filter media in the filtration vessel, and a drain to receive filtered liquid media for take off from the filtration vessel. The inlet is configured to i... | 03/11/2008 |
| 7328688 | Fluid pumping apparatus, system, and method A fluid pumping apparatus, system, and method are disclosed in which an apparatus according to one embodiment of the invention comprises a housing, an inlet through which the fluid enters the housing, an outlet through which the fluid leaves the housing, a valve com... | 02/12/2008 |
| 7314452 | Self flushing luer activated blood sampling devices A blood sampling device for allowing a fluid pressure measurement and a fluid sample to be taken from a patient, having an inlet port configured to receive blood from the patient, an outlet port configured to be coupled to a monitoring channel having an infusion flu... | 01/01/2008 |
| 7278449 | Switch, especially for branching off bulk material flows The invention relates to a switch for branching off bulk material flows, the switch includes a rotary plug (1) which is arranged in a fixed housing having preferably three connection openings. In a first position the plug establishes a connection between a fi... | 10/09/2007 |
