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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 |
| 7337981 | Vibration damping system The invention relates to a vibration damping system, which comprises an anti-vibration plate in the form of a plate having a first and a second major surface, wherein the first major surface may preferably be covered with a layer of surfactant-free geotextile. The a... | 03/04/2008 |
| 7185407 | Side rack rail system apparatus and method A rail system for positioning a toolhead above a workpiece uses a rack cut into one edge of the rail and driven by a pinion gear whose shaft is approximately perpendicular to a workpiece to couple the rail to the toolhead. Multiple rollers placed on the toolhead all... | 03/06/2007 |
| 7147907 | Protective covering for landscape ties and timbers and other building materials Apparatus and methods for preventing splinters and minimizing the number of injuries attributable to falling onto pressure-treated wooden members, such as landscape ties or timbers used in play areas and landscape projects, through the use of a resilient cover. A co... | 12/12/2006 |
| 6880763 | Hitch assisting device and method A hitch assisting device and method includes a generally planar member having an upper surface and a bottom surface. The planar member has a front edge and a back edge. The upper surface has at least one depression positioned therein. The depression extends between ... | 04/19/2005 |
| 6323441 | Ultrasonic distance measuring system for monitoring railroad car loads An ultrasonic distance measuring system for monitoring railroad car loads. The system includes an ultrasonic transducer, a pulse generation and detection circuit and a measurement circuit. The transducer produces a transmitted ultrasonic pulse beam to be ... | 11/27/2001 |
| 6270017 | Polymer embedment of rails A method of making a polymer coated rail in which a rail to be coated (10) is positioned on a mould base (11) in an inverted manner, so that the head (12) of the rail is immediately adjacent the base plate (11). Then, mould side pieces (13, 14) are secure... | 08/07/2001 |
| 5740960 | Method and apparatus for handling railcar brake shoes A method and apparatus for handling new and used railway car brake shoes is provided. The apparatus comprises a rack assembly, having an end wall interconnected between a pair of side walls and a grid member perimetrically secured to bottom edges of the s... | 04/21/1998 |
| 5605281 | Rail support system A support system for a rail section which bridges the gap between foundations which are relatively movable auxiliary rails running parallel to the rail across the sleepers which are supported by the foundation, and underpinning supports providing a stiff ... | 02/25/1997 |
| 5531379 | Method and apparatus for handling railcar brake shoes A method and apparatus for handling new and used railway car brake shoes is provided. The apparatus comprises a rack assembly, having an end wall interconnected between a pair of side walls and a grid member perimetrically secured to bottom edges of the s... | 07/02/1996 |
| 5492158 | System for collecting organic material underneath rail vehicles Described is a system for collecting organic material, such as oil, etc., underneath rail vehicles, in particular railway locomotives, the systen having at least one absorption material in at least one pan.... | 02/20/1996 |
| 5238734 | Railroad ties made of recycled tire fragments This invention relates to the use of rubber fragments from discarded tires in railroad ties. Such ties are made using rubber fragments which contain steel, polyester, or other strands or fibers, and which therefor are less expensive to prepare than fragme... | 08/24/1993 |
| 5101734 | Flexible rail A flexible rail comprises rail pieces arranged in line, laterally opposed side plates, and laterally opposed connecting plates. Each rail piece includes a generally I-shaped member and a shelter member which is fixed to a top of the I-shaped member. The o... | 04/07/1992 |
| 4781875 | Manufacture of pre-stressed concrete railroad ties Prestressed concrete railroad ties are formed in molds which are supported by existing track near the area where they are to be installed. Each mold will form a number of ties. Reinforcing strands are located within a plurality of longitudinally spaced mo... | 11/01/1988 |
| 4630772 | Insulating plate for rail insulated joint An improved insulating plate for an insulated rail joint includes a main plate portion made of a thermo-plastic resin, thick portions formed on the main plate portion at its side face contacting a joint plate, and planar heater elements embedded in the th... | 12/23/1986 |
| 4609144 | Railroad tie cover A universal railroad tie cover of a substantially rectangular configuration is provided which is composed of an elastomer material having one or more openings for receiving one or more elastomer pads for increasing the resiliency of rail fastening systems... | 09/02/1986 |
| 4489884 | Railroad tie cover A railroad tie cover of a substantially rectangular configuration composed of an elastomer material with or without an optional pad is provided for increasing the resiliency of rail fastening track systems in railroad track beds with and without ballast t... | 12/25/1984 |
| 4469277 | Back-up guide for trucks or trailers A back-up guide for trucks or trailers is made of two elongated members attached perpendicularly to each other, with spikes on their underside to hold the device in a stationary position. The longer of the two members provides a guide for the side of a ve... | 09/04/1984 |
| 4466569 | Anchoring a railway rail-fastening clip to a foundation for a railway rail An anchoring device for use in anchoring a railway rail-fastening clip to a foundation for a railway rail has a head part, which anchors the clip and is to lie above the foundation, and a tail part which is to lie in the foundation and is in the form of a... | 08/21/1984 |
| 4388357 | Sheet useful as a reservoir liner A containment reservoir for a liquid, such as petroleum oil, comprising, a walled ground containment space or pit, opening upwardly, with the space containing a liquid impervious flexible liner generally following the contour of the space, and with the li... | 06/14/1983 |
| 4356968 | Railroad tie cover A railroad timber tie cover of a substantially rectangular configuration composed of an elastomer material is provided for increasing the resiliency of rail fastening track systems in railroad track beds with and without ballast to prolong the service lif... | 11/02/1982 |
| 4311273 | Variable thickness fabric mat for railway track structure and method A variable thickness fabric mat for use with railroad track right of way beneath the track structure. The mat has a central portion of predetermined thickness, and lateral shoulder portions of a reduced thickness as compared to said cental portion, with t... | 01/19/1982 |
| 4299697 | Liquid containment and storage system for railroad track A containment and storage system for liquids, such as petroleum based liquids, for use for instance in a railroad track environment, comprising a walled containment reservoir formed in the ground and opening upwardly, with the containment reservoir includ... | 11/10/1981 |
| 4265398 | Variable thickness mat for stress transition zones of railroad track crossings, switches, and the like, and method of use A variable thickness fabric mat for use in railroad track structures, and particularly at stress transition zones in the railroad track; the mat is preferably formed of non-woven, multi-layered fabric, with the layers connected together, as for instance b... | 05/05/1981 |
| 4250812 | Undertrack fabric applicator A pair of spaced apart arms disposed on the side of a railway maintenance machine, the arms extending outwardly and carrying vertically positioned sleeves at their outer ends. Bars are slidably held in the sleeves for mounting of a fabric roll on their up... | 02/17/1981 |
| 4241664 | Formable drive rails An elongate formable drive rail for carrying a working apparatus having a toothed drive gear and support elements is provided in the form of a narrow elongate strip of metal having a regular series of corrugations extending lengthwise of the strip interme... | 12/30/1980 |
| 4203546 | Oscillation dampening system for a railway track An oscillation dampening system composed of masses, in which a spring and dampeners are clamped together and coupled to a railroad track to prevent the formation of ripples on the track. The system is tuned to the characteristic frequency of the railroad ... | 05/20/1980 |
| 4128166 | Endless belt conveyor system An endless belt conveyor for heavy materials handling is provided in which shock forces generated by the loading of heavy objects onto the conveyor are absorbed in the vertical, longitudinal and lateral directions with respect to the conveyor by resilient... | 12/05/1978 |
| 4051466 | Arrangement for detecting the presence of snow, ice and other freezing precipitation, particularly on railway track structures, and the like The arrangement includes at least one first and at least one second electrode positioned one above the other and spaced from each other in the vertical direction by at least one respective interelectrode gap which can be bridged over by snow, ice and othe... | 09/27/1977 |
