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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 |
| 7490750 | Method and apparatus for locally clamping components that are to be joined by friction stir welding The apparatus (50) includes a friction stir welding tool (100), a local clamping means (200), and an interface (300) that joins the tool (100) and the local clamping means (200). The local clamping means (200) is in c... | 02/17/2009 |
| 7141754 | Method for repairing defects in a conductive substrate using welding A method for repairing defects in a substrate including the steps of placing a consumable filler slug in contact with the substrate in the vicinity of the defect; placing at least one electrically conductive cover sheet in contact with a portion of the consumable fi... | 11/28/2006 |
| 7126076 | Method for repairing defects in a metallic substrate using welding A method for repairing defects in a metallic substrate including the steps of placing a consumable filler slug in contact with the substrate in the vicinity of the defect; bringing a first electrode and a second electrode in contact with the consumable slug and appl... | 10/24/2006 |
| 7062887 | Intersecting structural member and a method for joining same An intersecting structural member, and a method for assembling the same, allowing continuous structural members to intersect while also allowing one edge of each of the structural members to be bonded to a skin panel. A first structural member is provided with at le... | 06/20/2006 |
| 6932879 | Method of weldbonding An improved method of weldbonding utilizing inclusion bodies, placed directly between materials to be bonded or included in a weldbonding adhesive. The inclusion bodies maintain a gap between the materials to be welded which provides a gas releasing egress route to ... | 08/23/2005 |
| 6909066 | Adaptive and synergic fill welding method and apparatus An adaptive and synergic fill welding method and apparatus enables automatic, or adaptive fill, and user directed, or synergic fill, modes to provide improved fusion quality, by ensuring that base metal dilution of a weld remains within a predetermined range. The ap... | 06/21/2005 |
| 6875949 | Method of welding titanium and titanium based alloys to ferrous metals A method of welding titanium, and titanium based alloys, to ferrous metals is described. Welding of titanium, and titanium based alloys, is plagued with poor quality and highly brittle welds, substantially due to formation of Ti—Fe intermetallics in the weld pool.... | 04/05/2005 |
| 6862944 | Non-destructive butt weld inspection method A non-destructive plastic butt weld inspection method in which the weld bead 42 is removed from an exterior surface of a weld zone region 44 of a butt weld and the weld zone region 44 is heated to a temperature sufficient to visualize the weld z... | 03/08/2005 |
| 6861617 | Method of reducing distortion by transient thermal tensioning A method to minimize the distortion, such as buckling, caused in the welding of thin plate by utilizing transient thermal tensioning to induce areas of residual tensile stress. Distortion of such welded plates after stiffeners are welded to the plates is due to larg... | 03/01/2005 |
| 6779709 | Portable inertia welder A portable inertia welder is mounted in a housing so as to afford both axial and rotational movement of a shaft with flywheel weights. Rotational motion is provided by a motor affixed to the drive shaft while axial motion is provided by means of a hydraulic housing ... | 08/24/2004 |
| 6764640 | Torch-based cutting tool A torch cutting tool has a clamp that is attached to a workpiece with the clamp having a rotating platform with an attached first latch member. A second latch member is attached to a track with a moveable carriage on which is mounted a positioning arm with a torch h... | 07/20/2004 |
| 6707005 | Penetration flux Deep penetration gas tungsten arc welds are achieved using weld penetration containing one or more compounds selected from the group of compounds consisting of a) a titanium oxide, b) nickel oxide, c) a metal silicide, and d) mixtures of these compounds a flux conta... | 03/16/2004 |
| 6676008 | Friction stir welding of corner configurations A radiused corner support plate is used to form a corner void when making L- and T-corner welds that are filled with plasticized work piece material during friction stir welding to form a filleted corner weld. An improved friction stir welding tool uses e... | 01/13/2004 |
| 6676004 | Tool for friction stir welding A friction stir welding tool for welding high-strength materials with one or more of the following features: 1) a curved transition geometry structure at the shoulder face and probe interface; 2) a tool material selected on the basis of an ultimate tensil... | 01/13/2004 |
| 6664508 | Penetration flux Deep penetration gas tungsten arc welds are achieved using titanates such as Na2 Ti3 O7 or K2 TiO3. A small amount of the titanate is applied to the weld zone in a carrier fluid paste or as part of a ... | 12/16/2003 |
| 6659329 | Soldering alloy A new soldering technique and solder alloy for wetting and joining hard-to-wet materials including titanium alloys such as nitinol uses a solder alloy containing tin and an active wetting promoting element such as aluminum in the presence of ultrasound. A... | 12/09/2003 |
| 6608278 | Coated material welding with multiple energy beams To overcome 1) the high levels of porosity due to coating material vaporization and entrapment into the weld, 2) spewing of molten base metal from the weld leaving holes and pits in the weld, and 3) humping effects when oblong beam configurations are used... | 08/19/2003 |
| 6596122 | Simultaneous butt and lap joints A method for production of simultaneous lap and butt joints directs electromagnetic radiation (12) through a radiation transmitting material (40) to an absorbing material (44a, 44b, and 44c) that absorbs radiation (12) with the generation of heat. The hea... | 07/22/2003 |
| 6545244 | Conductive heat seam welding A welding arrangement comprises first and second parts to be welded with an edge portion of the first part and an edge portion of the second part juxtaposed to form a weld zone. An electrically-conductive sheet(s) with a higher melting temperature than a ... | 04/08/2003 |
| 6524426 | Plastic lumber pallets A plastic pallet assembly is formed from plastic lumber by melting sections of runners and cross members and contacting them to join said runners and said cross members to form a pallet. A machine having an assembly table, cross members for supporting and... | 02/25/2003 |
| 6281467 | Conductive heat resistance seam welding A welding arrangement (10) consists of first and second parts to be welded (4a, 4b) with a portion of the first part and a portion of the second part juxtaposed to form a weld zone (8a, 8b). An electrically-conductive sheet (2) with a higher melting tempe... | 08/28/2001 |
| 5843265 | Joining method A joining method directs polychromate, non-coherent electromagnetic radiation (14) through a radiation transmitting material (16) to an absorbing material (18) that absorbs the radiation with the generation of heat. The heat is used to heat a bond line (2... | 12/01/1998 |
| 5840147 | Plastic joining method A plastic joining method directs polychromate, non-coherent electromagnetic radiation through a transmitting plastic to an absorbing material that absorbs the radiation with the generation of heat. The heat is used to heat a bond line formed from the tran... | 11/24/1998 |
| 5804792 | Gas tungsten arc welding flux An easy to apply flux for increasing the penetration of gas tungsten arc welding of stainless steel substantially independent of flux thickness and variations in composition from heat to heat of stainless steel includes a flux consisting of reagent or lab... | 09/08/1998 |
| 5740314 | IR heating lamp array with reflectors modified by removal of segments thereof Conventional infrared, spot reflector lamps are modified by removing portions of the reflector to form reflector edges and then placing the reflector edges next to each other to form an array of lamps with a wide variety of configurations. The combined la... | 04/14/1998 |
| 5481091 | Thermoplastic welding A process for obtaining long, continuous, thermoplastic welds on large structures. A series of tabs are used in pairs and especially in alternating, overlapping pairs to obtain resistance heating of a strip material placed in the bond line. The resistance... | 01/02/1996 |
| 5362962 | Method and apparatus for measuring pipeline corrosion An automatic corrosion measurement system and method enables rapid measurement and evaluation of corrosion on significant portions of straight and curved pipe sections and other surfaces from several square inches to several square feet, using a laser ins... | 11/08/1994 |
| 5313034 | Thermoplastic welding A process for obtaining long, continuous, thermoplastic welds on large structures. A series of tabs are used in pairs and especially in alternating, overlapping pairs to obtain resistance heating of a strip material placed in the bond line. The resistance... | 05/17/1994 |
| 5305183 | Portable personal computer with passive backplane having a doublesided staggered connector array A portable personal computer that utilizes a combination of an open ended card cage and a passive backplane with a double-sided staggered array of connectors that allows for the horizontal placement of a large number of computer circuit boards in a low pr... | 04/19/1994 |
