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 |
| 8151825 | Reverse flow wye connector A subsea fitting is disclosed. The subsea fitting includes a body. The fitting includes at least two passages through the body. The passages are in fluid communication within the body. A diverter is located in at least one of the passages. The diverter may be movabl... | 04/10/2012 |
| 8001994 | Gas channeling device for directing blasts of gas through alternative outlet passageways and method therefor A gas channeling device for selectively channeling blasts of gas from an air cannon to various locations comprises a stationary portion and a movable portion. The stationary portion comprises a fluid inlet passageway and at least first and second fluid outlet passag... | 08/23/2011 |
| 7900651 | Material feed container for a thick-matter pump The invention relates to a material feed receptacle for a thick matter pump comprising a receptacle lower part and a receptacle top that is detachably connected to the receptacle lower part, a two-part front wall, a rear wall, two two-part lateral walls, an upwardly... | 03/08/2011 |
| 7891377 | Reverse flow wye connector A subsea fitting is disclosed. The subsea fitting includes a body. The fitting includes at least two passages through the body. The passages are in fluid communication within the body. A diverter is located in at least one of the passages. The diverter may be movabl... | 02/22/2011 |
| 7886769 | Diverter valve having an improved transition and outlet port A diverter valve having an improved transition at the connecting branches, wherein one inlet and two outlet ports are formed and a cylindrical rotary valve incorporating a straight inner pipe is provided. In order to attain the smoothest possible transition between ... | 02/15/2011 |
| 7429027 | Self-flushing needle valve A needle valve with a hollow needle effective for permitting a portion of the fluid passing through the valve to flow throughout the valve and exit through any leaks in the valve, whereby any environmental fluid within the valve is displaced by the fluid passing thr... | 09/30/2008 |
| 7343933 | Multi-port flow selector manifold valve and manifold system A multi-port flow selector manifold valve includes a plurality of inlet ports adapted to be coupled to a fluid source, a test outlet adapted to communicate with at least one of the plurality of inlet ports, and a production outlet adapted to communicate with at leas... | 03/18/2008 |
| 7282043 | Trocar seal system A seal assembly for reception of an elongated surgical instrument is provided which includes a body having at least one opening configured and dimensioned to permit entry of an elongated surgical instrument and defining a central longitudinal axis; a seal member for... | 10/16/2007 |
| 7255129 | Valve with elbow joint diverter A multiport diverter valve comprising a valve housing defining a valving chamber therein. A plurality of ports open into the chamber. A flow diverter is pivotally mounted in the chamber and has a concave diverter surface forming a portion of a torus. First and secon... | 08/14/2007 |
| 7073985 | System for pneumatically conveying bulk particulate materials A system for pneumatically conveying a bulk particulate material generally consisting of means for holding such material, having an inlet and an outlet; a first material transport line segment including a first conduit formed of a gas permeable material having an in... | 07/11/2006 |
| 7052213 | Hydraulic food cutter with improved accelerator tube assembly A hydraulic accelerator tube is provided for an improved hydraulic food cutting assembly. The accelerator tube is formed of polyurethane having a durometer hardness within the range of 20–70. It is encased within a clamshell housing which, when installed in the fo... | 05/30/2006 |
| 7048006 | Material feeding container for two-cylinder thick matter pumps The invention relates to a material feeding container for two-cylinder thick matter pumps. The material feeding container (24) has a material supply opening (30) oriented upward, two feed cylinder openings (34) arranged in the front wall (36 | 05/23/2006 |
| 6837272 | Piggable valve especially for a piggable paint supply line A valve for a branching and/or connecting location of a piggable line for coating material such as paint includes a valve housing for a first throughgoing line, to which at least one second line is selectively connectable, as well as a valve closure body that is spr... | 01/04/2005 |
| 6675398 | Diverter for use with tank valves to direct flow to tank or rim A diverter valve for selectively passing water from a ballcock valve directly to a water storage tank or to the rim of a toilet. It includes a diverter plunger which places a deflector into the path of water from the ballcock, and a float which removes th... | 01/13/2004 |
| 6601610 | Changeover valve and gas transportation pipe system It is an object of the present invention to provide a changeover valve which is capable of preventing granular material from being crushed when the granular material is transported by gas through a pipe system, and more particularly a changeover valve whi... | 08/05/2003 |
| 6572078 | Changover valve A changeover valve comprises a first valve member and a second valve member. The first value member has an aperture. The second valve member has first and second apertures. The first valve member is movable relative to the second valve member for selectiv... | 06/03/2003 |
| 6482181 | Trocar seal system A seal assembly is provided for reception of an elongated surgical instrument, which comprises a body having at least one opening configured and dimensioned to permit entry of an elongated surgical instrument and defining a central longitudinal axis; a se... | 11/19/2002 |
| 6311727 | Diverter valve A valve having a port defining a first internal passageway and a body portion defining a second internal passageway. Also provided is a first aperture and an opposingly located second aperture which are in communication with the second passageway. The fir... | 11/06/2001 |
| 6058974 | Valve for changing the direction of flow in pipes leading to/from a heat-exchanger The invention relates to a valve for changing the flow direction of a fluid in conduits, which conduct the fluid to and from, respectively, a heat exchanger. Heat exchangers used in systems where the cooling water is taken from natural streams, river wate... | 05/09/2000 |
| 5967420 | Nozzle assembly for spraying A rotatably operable nozzle assembly for spraying provided to an operating member for spraying which has a valve stem engaging hole into which a valve stem of a mounting cap of an upper end of a canister is engaged, wherein a spray port of the spray port ... | 10/19/1999 |
| 5966847 | Pneumatic excavator A portable excavator having a tube to point a supersonic gas stream at a buried object. The excavator includes a movable member disposed within the conduit to pulse gas passing through the conduit and a supersonic gas nozzle at the exit of the conduit. Co... | 10/19/1999 |
| 5950677 | Pressure equalization valve A pressure equalization valve for alternatingly equalizing pressures between a first fluid source and at least two second fluid sources is disclosed. The pressure equalization valve includes a valve body, which includes a first port in fluid communication... | 09/14/1999 |
| 5857490 | Structure of a pump valve for concrete mixture pumping trucks A pump valve assembly includes a pair of pistons containing cylinder bores opening to a front wall for conveying a concrete mixture from a feed chamber to a delivery tube. A pivotal S-bend tube establishes fluid communication between two valve body wear r... | 01/12/1999 |
| 5803118 | Metered feed valve A valve device adapted to meter the amount of any specific type of particulate matter--particularly livestock feed--being introduced into a mixture. The device uses a pair of compartments in a cylinder, the compartments being defined by pistons and using ... | 09/08/1998 |
| 5746247 | Slide valve for a twin-cylinder pump for viscous fluids The invention concerns a slide valve for a two-cylinder pump, in particular a truck-mounted concrete pump. The slide valve has an essentially C-shaped swing pipe which is connected at the upper end by a rotating joint to a discharge line and is mounted so... | 05/05/1998 |
| 5678265 | Inflatable cushion An inflatable seating cushion provides intermeshed cell structures so that air pressure changes from one of the cell structures to the next provides for improved comfort during long sitting periods. A manual selection switch allows an inflation means to b... | 10/21/1997 |
| 5433250 | Hydraulic line switches Hydraulic line switcher (10) for use with a hydraulic food cutting system having flexible tube (50) supported in cradle (52). Flexible tube (50) is conically tapered from a larger inlet to a smaller outlet and attached to slide plate (78). Air cylinder (9... | 07/18/1995 |
| 5329968 | Shuttle valve A shuttle valve is described which comprises a valve housing having an inlet and a plurality of outlets. An inner valve assembly is located within an internal cavity which is actuated by a shaft which extends from the internal cavity to a point external f... | 07/19/1994 |
| 5251670 | Flush valve Flush valves for alternately supplying freshwater or seawater coolant to marine engines. Such valves, used in combination with a marine engine cooling system, facilitate flushing of contaminants. In one embodiment, the valve includes a first portion havin... | 10/12/1993 |
| 5205490 | Body spray nozzle A body spray nozzle is disclosed wherein the spray pattern can be easily adjusted and the nozzle can be oscillated in a support in a shower fixture. A movable valve element which is cup-shaped is positioned in a valve body and with the base thereof to the... | 04/27/1993 |
| 5188151 | Flow diverter valve This invention is directed to a flow diverter valve for directing a flow of high pressure transport gas with carbon dioxide pellets entrained therein from a single inlet to a selected one of a plurality of outlets. The flow diverter valve includes a syste... | 02/23/1993 |
| 5140759 | Pneumatic device for excavating and removing material A high velocity pneumatic device for excavating and removing material such as soil. The device includes a pressure tube having an inlet connected to a source of gas, such as air, under pressure and an outlet end connected to the distal end of a removal co... | 08/25/1992 |
| 5133424 | Variable assist power steering control valve A variable assist power steering system for an automotive vehicle, the system having a source of hydraulic fluid (10), a power steering assembly (30) having a low speed inlet (32) and a high speed inlet (34), and a control valve (50) for continuously deli... | 07/28/1992 |
| 5129459 | Subsea flowline selector A flowline selector device has a housing with a single passage at the upper end and two or more passages at the lower end. A tube connects to the upper end and has a lower end that is offset from the axis of the housing. Reciprocating the tube up and down... | 07/14/1992 |
| 5127429 | Method and device for distributing pumpable thick matter into several delivery pipes An apparatus for delivering sludge-type matter from a supply line has a manifold conduit rotatably coupled on one end to the supply line and adapted to receive matter flowing therefrom. A distributor plate includes a plurality of ports extending therethro... | 07/07/1992 |
| 5114594 | Rainwater diverter Described is a preferred fluid flow diverter, such as a rainwater diverter, having an outer duct, and an inner duct within said outer duct and defining a reservoir to collect fluid. The diverter also includes a drainage duct extending from the reservoir t... | 05/19/1992 |
| 5069583 | Device for changing flow paths in a pneumatic conveying system The present invention is an apparatus for directing a fluid stream from a source tube to a selected one of a plurality of outlet tubes in fluid flow communication with the source tube. Disposed within the source tube is an elongated sleeve, the sleeve hav... | 12/03/1991 |
| 5029608 | Diverter valve There is disclosed a diverter valve having a gate for closing one or the other side-by-side seats aligned with outlets from a valve body wherein the body is made of carbon steel or other relatively low heat resistant but inexpensive metal, and the seats a... | 07/09/1991 |
| 5014716 | Sphygmomanometer air connector An air connector for use in association with a sphygmomanometer body, comprising an air socket having an air plug acceptor and a pressure measuring air line and an exhaust air line each communicating with the air plug acceptor, an air supply plug removabl... | 05/14/1991 |
| 4979884 | Multi-cylinder pump for heavy flowable materials A two-cylinder pump for heavy flowable material comprising a pump body with a deck surface, a pair of cylinder bores opening at the deck surface, and a piston reciprocating in each cylinder bore in charging and discharging strokes. The pump further includ... | 12/25/1990 |