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 |
| 7621694 | Curb and gutter forming method A curb forming machine for use by a single operator to form curved curbing includes a single rotatable curb-forming roller, a handle assembly for pulling and maneuvering the roller, and a motor for rotating the roller. The roller includes a generally cylindrical bod... | 11/24/2009 |
| 7441987 | Curbing machine and method A method and apparatus for laying a curb is disclosed. The apparatus features a preferably tracked vehicle (tractor) that connects to a frame having a hopper. A hydraulic lifting arrangement enables hydraulic controls on the vehicle to elevate/lower the frame. The f... | 10/28/2008 |
| 7377719 | Curb and gutter sled with pivoting mold assembly A slipform sled for paving street curbs and gutters has a hopper and a curb and gutter mold. A pivoting mold assembly having a standard curb elevation mold and a driveway curb elevation mold is mounted on the slipform sled. The pivoting mold assembly pivots on a sha... | 05/27/2008 |
| 7198429 | Segmented concrete screed A segmented concrete screed for screeding concrete on a concrete casting bed includes a plurality of individual screed units each of which may be raised and lowered independently of the others such that screeding operations may selectively bypass obstructions in the... | 04/03/2007 |
| 7182549 | Method and device for leveling of a surface The invention relates to a method for smoothing or leveling a ground surface, wherein a smoothing or leveling material is laid on a ground surface in that a box-like device filled with material is moved forwards, the material being allowed to exit a plate-adjustable... | 02/27/2007 |
| 7178615 | Transport system for portable auger A transport system is provided for a portable auger. The transport system comprises a dedicated powered drive unit to provide powered-assisted, wheel movement of the auger by an individual. Means are provided for allowing the wheel, or wheels, driven by the dedicate... | 02/20/2007 |
| 7174681 | Concrete from stake system with self-sealing plug Method and apparatus for securing a building foundation form disposed on a moisture barrier membrane. The method includes the steps of positioning one end of a concrete form stake in a mating structure of a plug, penetrating the moisture barrier membrane with a tip ... | 02/13/2007 |
| 7172364 | Dropped curb finisher The dropped curb finisher is for use with a slip form paving machines for forming continuous curbs and gutters. The dropped curb finisher has a vertical mounting plate, a finishing plate, an end plate and a vibrator for imparting vibration to the end plate and the f... | 02/06/2007 |
| 7029072 | Modified rumble strip cutter A rumble strip cutting machine having a drum that can be shifted from one side of the machine to the other. The machine includes a piston wheel that imparts an up and down motion to the frame so that rumble strips can be cut at desired intervals as the machine is dr... | 04/18/2006 |
| 7017331 | Jet nozzle mixer A second stage external jet nozzle mixer (20) includes identically formed lobes which equal in number the lobes of the first stage internal mixer. The external mixer works with the internal mixer, and furthers the mixing of the jet engine internal bypass flow... | 03/28/2006 |
| 6988850 | Pavement ramp edge making A pavement ramp edge maker, paving machine and related method are provided for generating a pavement edge ramp that is equal to or less than approximately 45° relative to a surface upon which the ramp is formed. The edge maker generates a ramp that is partially com... | 01/24/2006 |
| 6979145 | Driveway gutter having flexible filler mat An improved driveway gutter having a flexible gutter mat bridging the trough in the gutter for improving driving over driveway gutters. The mat is made of flexible material such as heavy rubber. The mat is placed with its flat bottom bridging the gutter, and fastene... | 12/27/2005 |
| 6962490 | Concrete extruder attachment for a vehicle A concrete extruder attachment for a vehicle includes a hopper adapted to hold flowable concrete. The hopper has an upper concrete inlet and a lower concrete outlet. A slip form is connected to the lower concrete outlet. An internal vibrator causes concrete to flow ... | 11/08/2005 |
| 6923630 | Apparatus and method for impressing patterns in a slip-formed concrete wall An apparatus and a method for impressing three-dimensional patterns in a slip-formed concrete wall. At least one impression roller is provided at the discharge end of a slip form. The impression roller includes an outer periphery, provided with a layer or coating of... | 08/02/2005 |
| 6923594 | Pavement ramp edge making A pavement ramp edge maker, paving machine and related method are provided for generating a pavement edge ramp that is equal to or less than approximately 45° relative to a surface upon which the ramp is formed. The edge maker generates a ramp that is partially com... | 08/02/2005 |
| 6913717 | Method of constructing a rail track in which a concrete track slab is produced and rail track anchor members are inserted into the track slab A method of constructing a rail track in which a concrete track slab is produced and rail track anchor members are inserted in the track slab by an inserter system mobile along the route of the rail track includes the following steps: using a machine for continuousl... | 07/05/2005 |
| 6890123 | Device for forming tight radius curbs and gutters with a paving machine A system and method to allow a paving machine to form tight radii in continuous extrusions such as curbs and gutters is disclosed. A shift cylinder is used with the steering mechanism of a typical paving machine to allow sharp radius turns. The steering cylinder is ... | 05/10/2005 |
| 6866239 | Concrete form assembly A form assembly for forming a concrete structure during drying of the concrete. The form assembly is formed of an elongated plastic form having a front wall for engaging the concrete and a rear wall. The front wall is spaced apart from the back wall to define a pock... | 03/15/2005 |
| 6863470 | Curb forming apparatus and methods A device for receiving and pushing hardenable material through a channel defined by a mold of the device to form a curb having an outer surface, and an attached steering assembly consisting of a steering arm coupling wheel supports attached to the device, and adjust... | 03/08/2005 |
| 6817849 | System for forming a curb and other structures A curb or other structure is formed by a moving slip form mold receiving material used to form the structure from a hopper. The slip form mold includes two portions pivotally connected to each other. In one configuration, the slip form mold portions form a straight ... | 11/16/2004 |
| 6789980 | Ditch forming apparatus and method A ditch forming apparatus makes the finishing touches on the ground work whereat the ditch is to be formed, pours the concrete, screeds the concrete, and finishes the surface of the concrete. The apparatus uses a hopper with and open top and an open bottom to receiv... | 09/14/2004 |
| 6722816 | Berm forming apparatus A chassis having a main member carries adjustable side members defining an area for the reception of berm forming particulate material conveyed by an air flow from a remote source. The discharged material forms a continuous berm of constant size and shape. Wheel ass... | 04/20/2004 |
| 6709195 | Moveable tailpiece for attachment to a curb forming machine for producing low curb profiles A moveable tailpiece for use in association with a slip form on a curb forming machine. The tailpiece is selectively rotatable from a parked position, away from the slip form, to an engaged position at the end of the slip form. The tailpiece has the profile correspo... | 03/23/2004 |
| 6705582 | Concrete form & stake assembly and method of making same An assembly of concrete forms for use in the placement of concrete, the assembly having a pair of longitudinal form members and a ground engaging member that is in contact with at least one of the longitudinal form members. A first longitudinal form member slidably ... | 03/16/2004 |
| 6629681 | Flexible form assembly A flexible form assembly for forming concrete structures during setting of the concrete is provided. The flexible form assembly includes an elongated form having a front side for engaging the concrete and a rear side. The rear side includes a back wall di... | 10/07/2003 |
| 6554080 | Motor grader having material distribution attachment A motor grader can be adapted for laying down a layer of granular material such as base rock or cold mix asphalt by mounting a dispensing hopper attachment onto the front of the motor grader and a spreading and leveling screed onto the moldboard. As the m... | 04/29/2003 |
| 6540435 | Curb mold and extruding system A molding device for placement of formed cementitious material such as concrete on a mounting surface. The device is used in combination with a supply of pressurized cementitious material communicated through a hose from a conventional cement pump or the ... | 04/01/2003 |
| 6508606 | Curb forming apparatus An apparatus for continuously shaping and extruding a longitudinally extending curb of moldable material. The device provides a self-contained and self-powered platform for modular curb forming inserts of multiple disciplines including auger extrusion and... | 01/21/2003 |
| 6450730 | Curb forming machine and related methods The curb forming and extruding machine forms continuous concrete edging while reducing and/or substantially eliminating voids, flat spots or weak areas caused by smoothed sections in the packed concrete. Also, concrete bridging in the hopper, and the asso... | 09/17/2002 |
| 6322287 | Aggregate grading machine A grading machine includes a forwardly projecting frame partially supported by a small tractor. A blade assembly on the frame disperses and strikes off aggregate for subsequent paving along a course. The blade assembly of the apparatus is indirectly suppo... | 11/27/2001 |
| 6293728 | Curb forming apparatus and method Curb forming apparatus comprising a device for pushing hardenable material through a channel defined by a mold and a feed extending into the channel for forming a groove into the hardenable material and for supplying elongate stock to the groove.... | 09/25/2001 |
| 6293780 | Vibrating device for processing a floor layer A vibrating device for processing a floor layer. The device includes a vibrating board, a vibrating mechanism and a handle. The handle is attached to the vibration board with at least one clamping coupling. The clamping coupling includes at least two conn... | 09/25/2001 |
| 6171019 | Methods of, and apparatus for, mixing and preparing a base on which turf is to be laid An apparatus, and related method, for laying sand and/or a sand reinforcement matrix onto a pre-prepared surface, includes an apparatus having a hopper for providing a matrix to be laid, a plunger at the forward end, in the sense of direction of movement ... | 01/09/2001 |
| 6139223 | Trench filler A trench filler having a generally synclinal front section having a solid top and generally downwardly extending sidewalls, a rear section of unitary construction with the front section, the rear section having a solid top and generally downwardly extendi... | 10/31/2000 |
| 5997270 | Automated trowel A flexible automated trowel for sliding formwork machine allowing the finishing of a continuous trapezoidal wall of the type having one rectangular side and one side inclined towards the top or with two angular sides. A mold supporting the trowel comprise... | 12/07/1999 |
| 5662431 | Self-propelled slip-form paving apparatus The present invention provides a novel arrangement for selective mounting and demounting of a mold to a self-propelled slip-form paving machine. The paving machine basically comprises a frame, a drive engine, a hopper for concrete or another suitably flow... | 09/02/1997 |
| 5527129 | Elliptical orbit compaction curb forming and extruding apparatus A manually operable and steerable curb extrusion device for extruding curb, barrier, wall, gutter or the like from concrete, cement or some other moldable building material. The curb extrusion device has a hopper into which building materials are placed t... | 06/18/1996 |
| 5354189 | Curb forming and extruding apparatus A manually operable and steerable curb extrusion device for extruding curb, barrier, wall, gutter or the like from concrete, cement or some other moldable building material. The curb extrusion device has a segmented vibrating hopper into which building ma... | 10/11/1994 |
| 5173005 | Prime mover actuated concrete curb extruder A continuous concrete curb forming apparatus is formed by a vertical open end sleeve-like hopper having a channel-like member connected with its depending opening forming the shape of a conventional concrete curb as wet concrete poured in the hopper is re... | 12/22/1992 |
| 5062737 | Powered height changer for improved power curber In accordance with this invention I provide a curb laying machine designed to extrude curbing of molten asphalt or concrete in a parking lot or the like. This machine utilizes a wheeled chassis, and a curb mold removably carried on a lower portion of the ... | 11/05/1991 |