Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7290586 | Bicontinuous composites A ceramic foam having pores in the range of 20 to 800 microns and 10 to 30 % of theoretical density is placed in a preheated mould and molten metal or plastics is drawn in to form a bicomposite structure. ... | 11/06/2007 |
| 7191519 | Method for the manufacture of a vaned diffuser An improved method for manufacturing a vaned diffuser (101) of a turbocharger, preferably from aluminum or an aluminum alloy, where the vaned diffuser possesses at least one axis (115) suitable for separating the vaned diffuser from its rigid mold by t... | 03/20/2007 |
| 7073559 | Method for producing metal fibers A method of producing metal fibers including melting a mixture of at least a fiber metal and a matrix metal, cooling the mixture to form a bulk matrix comprising at least a fiber phase and a matrix phase and removing at least a substantial portion of the matrix phas... | 07/11/2006 |
| 7011135 | Apparatus for producing a composite material including ceramic hollow particles and aluminum or aluminum alloy and method for producing the composite material the same An apparatus 1 for producing a composite material including ceramic hollow particles and one of aluminum and aluminum alloy pressurizes a gas feeding member 20, a molten stock vessel 30, a packing 50, a forming mold 60 and an air-r... | 03/14/2006 |
| 6953077 | Method and apparatus for producing mold A method and an apparatus for machining a mold material to produce a mold. By casting based on a cast mold model (15), a mold material (20) is produced in a form having a work margin. Thereafter, a shape of the mold material (20) is measured by ... | 10/11/2005 |
| 6932512 | Agricultural rockshaft bearing block structure and wear inserts therefor A bearing block structure for an implement rockshaft includes a two-piece ultra high molecular weight (UHMW) polyethylene wear insert located between a cast iron or welded steel bearing block and a rockshaft. In one embodiment, identical insert halves are supported ... | 08/23/2005 |
| 6517953 | Metal matrix composite body having a surface of increased machinability and decreased abrasiveness Often, metal matrix composites (MMC's) lack adequate machinability and possess excessive abrasiveness because hard ceramic materials, such as silicon carbide, are used as the reinforcement phase. To make a metal matrix composite body having a more machina... | 02/11/2003 |
| 6500283 | Method of improving environmental resistance of investment cast superalloy articles A method for promoting the environmental resistance of nickel, iron and cobalt-base superalloys of the type alloyed to develop a protective oxide scale. The method entails a technique for removing sulfur during or subsequent to the casting operation. The ... | 12/31/2002 |
| 6305461 | Drop leg booster for carburetors A booster equipped carburetor in which the venturi bores in the carburetor have an enhanced drop leg booster therein. The drop leg booster has a venturi orifice and a "bent" channel member. The channel member communicates fuel to the venturi orifice and p... | 10/23/2001 |
| 5980792 | Particulate field distributions in centrifugally cast composites Centrifugal casting is used to establish a gradient profile of reinforcement particulate densities in a carrier matrix of a polymer resin and in an aluminum alloy. Cast disks of silicon carbide (SiC) reinforced resin and Al-Si/SiC particulate reinforced M... | 11/09/1999 |
| 5980800 | Method for making a bracket of a brake lever A method uses a mold for making a bracket of a brake lever device. The mold includes a mold cavity and a stem and a block extended inward of the mold cavity for forming the aperture and the orifice of a band of the bracket. A material is then injected int... | 11/09/1999 |
| 5845383 | Method of manufacturing baitcasting reels A method of forming a baitcasting reel is disclosed, the baitcasting reel being formed by two end cases provided on either end of a spool and connected by an integral reel body. The reel body may form a portion of either of the end cases. Each of the case... | 12/08/1998 |
| 5350003 | Removing metal from composite bodies and resulting products The present invention relates to a novel process for removal of at least a portion of at least one metallic component of a metallic constituent from a multi-phase composite body. Particularly, by providing at least one of an infiltration enhancer or an in... | 09/27/1994 |
| 5284200 | Method of forming a bonded component The present invention relates to a method for bonding metal and ceramic parts to form a bonded component. The method of the present invention allows the metal part and the bond to be fabricated concurrently. The strength of the bond can be controlled thro... | 02/08/1994 |
| 5251682 | Cast disk and method of manufacturing the same An improved cast power transmission disk and method of forming the same, the disk including a peripheral rim having at least one power transmission unit spaced from a hub with an integral body portion therebetween, a major portion of the rim and hub and t... | 10/12/1993 |
| 5232040 | Method for reducing metal content of self-supporting composite bodies and articles formed thereby This invention relates generally to a novel method for removing metal from a formed self-supporting body. A self-supporting body is made by reactively infiltrating a molten parent metal into a bed or mass containing a boron source material and a carbon so... | 08/03/1993 |
| 5179994 | Method of eliminating porosity defects within aluminum cylinder blocks having cast-in-place metallurgically bonded cylinder liners A method for eliminating porosity defects in aluminum cylinder blocks (22) having cast-in-place metallurgically bonded cylinder liners (12) includes coating the liners (12) with a low melting point molten metal such as zinc and thereafter removing a virtu... | 01/19/1993 |
| 5137074 | Spherical bearing overlay casting process The invention is a method of forming a spherical bearing shell comprising an overlay casting process which utilizes a ceramic insert having a semi-spherical close-tolerance outer surface with a casting sprue opening therethrough and lubrication ribs on sa... | 08/11/1992 |
| 5106700 | Casting with polished raised logo and method of manufacture Disclosed hereis is a casting having a cast exterior surface and a gate portion extending adjacently and integrally from the cast exterior surface and including a polished outer face located in adjacently raised relation to the cast exterior surface and h... | 04/21/1992 |
| 4955126 | Process for fusing steel slabs in longitudinal direction thereof A process for fusing a steel slab in a longitudinal direction thereof is disclosed, wherein when the steel slab is fused in the longitudinal direction at more than 500° C. and at a speed of more than 300 mm/min., a surface portion of the slab including a... | 09/11/1990 |
| 4909300 | Fluid-permeable article producing method A fluid-permeable article which permits fluid to pass therethrough includes a porous ceramic structure having a multiplicity of hollow members made of ceramic material which are concatenated with each other to form a framework having a continuous capillar... | 03/20/1990 |
| 4874031 | Cantilevered integral airfoil method A method for producing an outer stabilizing band or bands at the unsupported end portion of the air foils changes the configuration from an unsupported cantilevered airfoil to a baband supported airfoil during the forming of the mold and casting of the pr... | 10/17/1989 |
| 4794685 | Process for forming metallic articles A process for forming a metallic article such as a fluid actuated ram assembly and particularly a hydraulically actuated ram assembly which includes as an initial step production of a raw casting from a mold. Subsequently one or more transverse parting op... | 01/03/1989 |
| 4678720 | Silver-copper-titanium brazing alloy A silver-copper-titanium brazing alloy foil was produced by a rapid solidification processing method(s). The composition ranged from 10 to 50 weight percent copper, 0.1 to 9.5 weight percent titanium and the balance silver. Since the method provides high ... | 07/07/1987 |
| 4573518 | Casting method and apparatus Castings are produced by sandwiching a central mould part 10 between two outer mould parts 36, 38 during the casting process. The central mould part 10 is then transfered sequentially from between the outer mould parts 36, 38 and subsequently re-located b... | 03/04/1986 |
| 4535517 | Method for producing a connecting rod for a radial piston motor A connecting rod for a radial piston motor including a spherical surface portion, a rod portion and a pad portion having a sliding surface. The spherical surface portion, rod portion and pad portion are formed integrally, and the sliding surface has a bea... | 08/20/1985 |
| 4494297 | Method of producing castings with means to facilitate burr removal A method is described for producing castings and removing burrs produced during the casting at the parting line of the casting mold and in regions where cores are supported in core-supporting holes formed in the mold. The casting mold is so shaped that a ... | 01/22/1985 |
| 4419801 | Method for manufacturing a cast iron cylinder block Method for manufacturing a cast iron cylinder block including steps of moulding the cylinder block with a cylinder wall formed with one or more protuberances in areas that will be subjected to piston side thrust forces so that the cylinder wall possesses ... | 12/13/1983 |
| 4318214 | Method and apparatus for manufacturing and forming engine induction passage venturi A carburetor is disclosed as being formed by die casting and in the process employing two opposed juxtaposed casting cores to form the induction passage and main venturi therein with the result that a flashing of die case metal occurs as between the oppos... | 03/09/1982 |
| 4310381 | Method for improving magnetic properties of metallic glass ribbon The soft magnetic properties of metallic glass ribbon are improved by removing at least a part of the surface before annealing. The magnetic alloy ribbon is prepared by chill block casting, after which the regions of the ribbon surface that adjoined but d... | 01/12/1982 |
| 4172155 | Surfacing circular-section metal members A method of surfacing mill guide rolls 1 in which a metallic powder (6) is deposited on to the surface of the rotatable roll by flame, arc or plasma spraying, fusion welded and then shaped and compacted while in a plastic condition by a roll former 7 rota... | 10/23/1979 |
| 4170055 | Method and apparatus for manufacturing a heat exchanger A method and apparatus for manufacturing a heat exchanger. A plurality of parallel pipes are advanced from a magazine to an axially slotted open ended shell blank which is radially compressed against the pipes. The contacting surfaces of the pipe openings... | 10/09/1979 |
| 4067379 | Method for the manufacture of multilayered contacts for medium-voltage vacuum power circuit breakers A method for producing multilayered contacts for medium-voltage vacuum power circuit breakers is provided comprising impregnating under vacuum with oxygen-free, liquid copper, a composite body of metal powders consisting of at least 35% by volume of a met... | 01/10/1978 |
| 4023611 | Method of welding pipes onto pressure conveying elements, especially pipe plates, pressure containers and collectors A method of connecting a pipe to a pressure conveying element, especially a pipe plate, a pressure container, and a collector, according to which the pressure conveying element is within the region of its intended connection with the pipe provided with li... | 05/17/1977 |
| 4004343 | Method of making core tubes for solenoids A method of forming the core tube of an electro-magnetic solenoid comprises forming and positioning the end portions of the core tube and centrifugally casting the non-magnetic intermediate portion of the core tube.... | 01/25/1977 |
| 4003424 | Method of making ductile iron treating agents A method of making a more economical and reliable treating agent for use in late metal treatment when pouring metal castings. The treating agent is defined as an essentially homogeneous solid cast block preferably containing alloying ingredients to noduli... | 01/18/1977 |
| 3949804 | Method of manufacturing a metal-impregnated body The present invention relates to a method of manufacturing a metal-impregnated body in which a porous body is immersed under sub-atmospheric pressure in a molten alloy for impregnation with said alloy or a porous body is immersed under elevated pressures ... | 04/13/1976 |
