Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 6905752 | Polishing tape used in production of magnetic recording medium Disclosed is a tape for polishing the surface of a substrate of a magnetic recording medium, and a thin-fineness filament obtained by dissolving a dissolving component of a dissolution-decomposition type composite yarn consisting of a nylon component and the dissolv... | 06/14/2005 |
| 6861161 | Composite tool A composite tool comprising a supporting part of a metallic material having a first composition and a working part of a metallic material having a second composition which is different from the first composition, a process for the manufacture thereof and a method of... | 03/01/2005 |
| 6541124 | Drill resistant hard plate A drill resistant plate, which presents a rough surface of hardened particles to drilling attack, and which tends to snap or destroy drill bits before they can began drilling. The plate is made by brazing hard particles into a matrix of brazing material a... | 04/01/2003 |
| 6180266 | Cutting tool A cutting tool having cutting edges made of a high speed tool steel exhibiting very high wear and anti-chipping resistances, and sufficient toughness is provided. The high speed tool steel consists essentially of by weight C:0.6 to 1.8%, Si:1.2% max, Mn:0... | 01/30/2001 |
| 6140388 | Thermosetting binder prepared with mono(hydroxyalkyl)urea and oxazolidone crosslinking agents Abrasive articles comprising a cured thermosetting binder and abrasive grains. The binder is prepared with a poly-functional molecule comprising at least two functional groups selected from the group consisting of carboxyl and anhydride, and a crosslinkin... | 10/31/2000 |
| 5639546 | Coated article having improved adhesion to organic coatings A coated product comprises a thermoplastic sheet support bearing on at least one surface an adhesion promoting cured layer comprising a composition of: 1) 30-80% by weight individually dispersed colloidal metal oxide particles, preferably silica, alumina ... | 06/17/1997 |
| 5518794 | Abrasive article incorporating composite abrasive filament A composite abrasive filament, including at least one preformed core at least partially coated with a hardened, abrasive-filled thermoplastic elastomer, exhibits increased abrading life over previously known abrasive filaments. Also disclosed are methods ... | 05/21/1996 |
| 5453312 | Abrasive article, a process for its manufacture, and a method of using it to reduce a workpiece surface An abrasive article having a sheet-like structure having at least one major surface having deployed thereon a plurality of individual abrasive composites, each abrasive composite comprising a plasticizer and a plurality of abrasive particles dispersed in ... | 09/26/1995 |
| 5387457 | Abrasive tape and method for polishing magnetic heads An abrasive tape comprises a flexible substrate and an abrasive layer which is overlaid on the flexible substrate and which contains abrasive grains and a binder. The abrasive grains comprise first abrasive grains, which have a mean grain diameter falling... | 02/07/1995 |
| 5123972 | Hardened insert and brake shoe for backstopping clutch An improved hardened insert and brake shoe adapted for use in bi-directional backstopping clutches is disclosed. The inserts are formed from a base material of high speed alloy tool steel, which is relatively inexpensive and easy to machine. The base mate... | 06/23/1992 |
| 5104461 | Hardened insert for backstopping clutch An improved hardened insert adapted for use in bi-directional backstopping clutches is disclosed. The inserts are formed from a base material of high speed alloy tool steel, which is relatively inexpensive and easy to machine. The base material is formed ... | 04/14/1992 |
| 5064728 | Article with internal wear resistant surfaces A method is described for improving the erosion and abrasion wear resistance and hardness of the internal wear surfaces of structures such as nozzles, jets, ducts, chutes, powder handling tubes, valve housings, conveyors, drill bushings and the like. A su... | 11/12/1991 |
| 5002828 | Composite diamond abrasive, process for preparation, and drilling or machining which are equipped with it An abrasive is provided having an active phase comprising a sintered product comprising diamond grains, each grain being linked directly to its neighbors by bridging to exhibit a polycrystalline structure, and a support consisting essentially of tungsten ... | 03/26/1991 |
| 4746563 | Multilayer coated cemented carbides Multilayer coated cemented carbides excellent in wear resistance and toughness are provided comprising a substrate of cemented carbide, an inner layer contacted with the surface of the substrate, and an outer layer contacted with the inner layer, the inne... | 05/24/1988 |
| 4686080 | Composite compact having a base of a hard-centered alloy in which the base is joined to a substrate through a joint layer and process for producing the same A composite compact component made of a composite compact consisting of a diamond or BN powder bonded to a hard sintered alloy base during a sintering operation, and a substrate composed of steel or a hard sintered alloy bonded to the base of the composit... | 08/11/1987 |
| 4490191 | Coated product and process Improved adherence of oxide wear layers on hard metal or cemented carbide substrates is obtained by providing a thin surface-oxidized bonding layer comprising a carbide or oxycarbide of at least one of tantalum, niobium or vanadium, optionally adding alum... | 12/25/1984 |
| 4456500 | Method of manufacturing a polisher In a method of making a polishing element a photoresist film 2 is first deposited on a surface of metal stock 1. A photomask 3 is then used to selectively cover portions of the deposited photoresist film 2. Thereafter, portions of the photoresist film 2 w... | 06/26/1984 |
| 4435480 | Pressed and sintered composite body comprising a thin tape cast layer and a thick base layer A composite body has a pressed mix base or layer and a thin facing layer formed by casting and bonded to the base and having desired physical properities different from those of the base. This body has utility as a semiconductor substrate with the cast la... | 03/06/1984 |
| 4273159 | Earth boring apparatus with multiple welds A box tool joint member of generally tubular configuration is adapted for securement by welding to one end of a steel tube to form a drill pipe. The box tool joint member comprises a body having a cylindrical outer periphery, an internally threaded socket... | 06/16/1981 |
| 4268582 | Boride coated cemented carbide A coated cemented carbide article comprises a cemented carbide substrate, the surface regions thereof having diffused therein an element such as boron, silicon or aluminum. The article further comprises a coating disposed on the diffused substrate, the co... | 05/19/1981 |
| 4240806 | Abrading material A metal abrading material formed from acid etching with a resist pattern comprising a plurality of polygonal shapes with accentuated corners dispersed in a pattern chosen to intermix cutting points with planing edges.... | 12/23/1980 |
| 4232094 | Sprayed coatings on metal surfaces Process of improving a sprayed layer on a bearing or tool component subjected to relatively high stresses, characterized in that the layer is remelted by a heat-source in a vacuum chamber, the heating being arranged such that only the layer itself is reme... | 11/04/1980 |
| 4232096 | Composite steel material and composite steel tool made from this material A composite steel material consisting of two metallically joined steel components having different chemical compositions is disclosed. The first component is a high-speed tool steel or other high alloy tool steel having a carbon activity and a hardness an... | 11/04/1980 |
| 4177324 | Hard facing of metal substrates using material containing V, W, Mo, C Hard-facing of iron and iron base alloy substrates is disclosed using a hard facing material in the form of granules consisting essentially of grains of chemically combined vanadium, tungsten, molybdenum, and carbon bonded by a binder metal of nickel-moly... | 12/04/1979 |
| 4136230 | Wear resistant alloy coating containing tungsten carbide A method and coating material are provided for improving the wear and abrasion resistance of a composite nickel-base hard facing alloy applied to metal substrates comprising the system Ni-Cr-Si-B having dispersed therein particles comprising tungsten carb... | 01/23/1979 |
| 4110514 | Weld metal deposit coated tool steel A weld metal deposit which is not subject to solidification cracks and which is highly wear-resistant, also to the hot wear to which hot forming tools are subjected is disclosed. The weld metal deposit consists essentially of an air-hardening alloy steel ... | 08/29/1978 |
| 4052530 | Co-deposited coating of aluminum oxide and titanium oxide and method of making same Disclosed is a method of forming dense protective coatings of co-deposited aluminum oxide and titanium oxide on wear surfaces. The coating is formed by simultaneously reacting an aluminum halide gas and a titanium halide gas with water vapor on a surface ... | 10/04/1977 |
| 4049876 | Cemented carbonitride alloys This invention relates to a cemented carbonitride alloy in which the hard phase consists of wherein A, B, C, X and Y are respectively mole fractions, Z is a mole ratio of the metalloid components to the metal components and there are among A, B, C, X, Y a... | 09/20/1977 |
| 4023985 | Steel abrasives and method for producing same Disclosed is a method of producing a versatile as-cast steel shot having a substantially fully martensitic structure and corresponding full hardness which permits eliminating intermediate steps of heat treating to harden and subsequent drying in producing... | 05/17/1977 |
| 3930426 | Method of making a saw blade In the manufacture of saw blades a metal block is first produced, having a central portion consisting of cutting tool steel. The block is now flattened to form a sheet in which the cutting tool steel forms a central strip. The sheet is now divided to form... | 01/06/1976 |
