...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7806162 | Controlled pressure casting A method of forming metal castings includes positioning a first end of a structural member in a first mold cavity and a second end of the structural member in a second mold cavity. The first and second mold cavities are fluidly coupled to a reservoir of molten metal... | 10/05/2010 |
| 7258209 | Brake drum and method for producing the same A brake drum includes a ring-shaped drum body, and a friction member secured to the inner circumferential surface of the drum body. Because the drum body is formed of a lightweight Al alloy and the friction member is formed of an Al-base composite material, the brak... | 08/21/2007 |
| 7250221 | Method of producing clad metal products A method of producing a clad metal ingot suitable for rolling to form a clad metal sheet, and the clad metal ingot so produced. The method involves providing a solid core ingot having an upper side with a rolling face thereon having cavities extending inwardly into ... | 07/31/2007 |
| 7226667 | Cast-iron insert and method of manufacturing same A cylinder liner has an outer circumferential surface around which another metal is to be cast. The cylinder liner also has a plurality of protrusions disposed on the outer circumferential surface and having respective substantially conical undercuts or necks which ... | 06/05/2007 |
| 7097780 | Aluminum composite material and method of producing the same An aluminum composite material has a surface structure in which a part of lubricative granules projects by 2 μm to 25 μm from the surface of the aluminum alloy base material. The lubricative property of the lubricative granules is utilized sufficiently, and the ab... | 08/29/2006 |
| 7090120 | Sheet punching device and image forming apparatus having the same A sheet punching device that cuts holes in a sheet while punches are entering die holes, in which a plurality of punch trains along each of which a plurality of punches are aligned on a rotating shaft in parallel with the rotating shaft are disposed in the rotation ... | 08/15/2006 |
| 7086448 | Casting and method of making such casting A method of making a casting having a cast portion and a cap nut includes forming a hole with a stepped shape in the cap nut to have a large-diameter hole on an opening side and a threaded small-diameter hole on a bottom side, inserting a fixing member into the larg... | 08/08/2006 |
| 7066235 | Method for manufacturing clad components A method for manufacturing a clad component in which a cladding workpiece having a section comprising a first metal onto which a number of metal beads are rigidly bonded is inserted into a mold. A molten second metal is poured into the mold, where it flows about and... | 06/27/2006 |
| 7036550 | Infiltrated aluminum preforms A method for the manufacture of a three-dimensional object includes the steps of forming a mixture that contains a binder and a least one of aluminum or a first aluminum-base alloy into a green composite, removing the binder from said green composite, forming a poro... | 05/02/2006 |
| 7014924 | Metal member to be cast-wrapped A metal member to be cast-wrapped by a metal cast article, a manufacturing method thereof and a metal cast article including the metal member cast-wrapped are provided. A hollow cylindrical metal member having an outer surface with projections to be cast-wrapped by ... | 03/21/2006 |
| 6997232 | Infiltrated aluminum preforms A method for the manufacture of a three-dimensional object includes the steps of forming a mixture that contains a binder and a least one of aluminum or a first aluminum-base alloy into a green composite, removing the binder from said green composite, forming a poro... | 02/14/2006 |
| 6957489 | Method for producing a light-alloy bearing bush with a rough external surface The aim of the invention is to produce a light-alloy bearing bush with a rough external surface. To achieve this, particles, which are subsequently surrounded in part by the molten metal, are applied to the surface of the casting mould. When the bearing bush is rele... | 10/25/2005 |
| 6938670 | Method and apparatus for manufacturing supercharger rotor A method for manufacturing a supercharger rotor by casting a profile portion of a supercharger rotor and a shaft penetrating the same, having the steps of: first cutting a left and right helical cross portion on a surface of the shaft connected to the profile portio... | 09/06/2005 |
| 6865807 | Cylinder block production method A cylinder block production method is characterized by having, as a step prior to a cast-enclosing step of cast-enclosing a cast iron-made cylinder liner within a cylinder block body, an erosion-wash step of washing an outer peripheral wall surface of the cylinder l... | 03/15/2005 |
| 6837297 | Method for fabricating bottle molds The method allows fabricating a bottle mold having dissimilar metal inserts embedded in regions where the bottle mold is most subject to attack by hot glass, and has a glass contact surface with refined grain size. To fabricate the bottle mold, rough castings are ma... | 01/04/2005 |
| 6823928 | Infiltrated aluminum preforms A method for the manufacture of a three-dimensional object includes the steps of forming a mixture that contains a binder and a least one of aluminum or a first aluminum-base alloy into a green composite, removing the binder from said green composite forming a porou... | 11/30/2004 |
| 6758532 | Automobile spider wheel having a stainless steel face layer and a process for manufacturing the wheel An automobile spider wheel is made of aluminum alloys and has an outer face layer made of stainless steel. A process for manufacturing the automobile spider wheel includes working the stainless steel insert by a known press process based on side face shapes of an au... | 07/06/2004 |
| 6615900 | Connecting rod with ball joint and manufacturing method thereof An object of this invention is to provide a connecting rod in which a pair of ball-shanks are connected to a rod main body such that they are axially perpendicular to each other, having a sufficient strength and which can be produced easily and at low cos... | 09/09/2003 |
| 6571859 | Heat sink and process and molding tool for production of same A heat sink of metal material, in particular a light metal alloy, for semi-conductor elements or similar components, has plate-like cooling ribs projecting from a base plate at intervals (f) and approximately parallel to each other, protrude with a connec... | 06/03/2003 |
| 6468671 | Foamed metal preformed body In a foamed metal preformed body, including foamed metal foam material, at least one flow conduit (18) for communicating a thermal treatment fluid is guided through or into the foamed metal foam material.... | 10/22/2002 |
| 6465111 | Metal foam jointing method In a metal foam jointing method for joining preformed bodies, a first preformed body (1) and a second preformed body (1, 2) are located in fixed positions relative to each other. By means of a jointing clamp (10), an encasement of a space (9) is formed in... | 10/15/2002 |
| 6357557 | Vehicle wheel hub and brake rotor and method for producing same This invention relates to a vehicle wheel hub and brake rotor including a wheel hub portion formed from a first material and a brake rotor portion formed from a second material and joined to the wheel hub flange during an in situ casting process. The meth... | 03/19/2002 |
| 6328092 | Process and a system for connecting at least two components A process for connecting at least two components, particularly body components of motor vehicles, wherein the first component has an undercut on a side facing the second component. In the area of the undercut, a connection piece is cast to the first compo... | 12/11/2001 |
| 6216763 | Cast node and method for casting nodes A method of connecting elements in a vehicle frame includes fixing the elements in a desired orientation, positioning dies to surround a portion of each element, and introducing material into the die cavity thereby casting a node around the elements.... | 04/17/2001 |
| 6134781 | Method for making a throat insert for rocket thrusters A thruster rocket engine throat insert (12) has a thin walled shell (54) made from a high strength, oxidation resistant material. The shell (54) having a throat (48) of reduced cross-section and a radially extending annular stiffening ring (60) located at... | 10/24/2000 |
| 6116328 | Fabrication of tile reinforced composite armor casting Alumina tiles within aluminum framing jigs are fixedly positioned by lock ns within an internally coated mold for centrifugal casting within a block of an aluminum alloy material. Such jigs and the tiles framed therein are coated with silver before castin... | 09/12/2000 |
| 6074763 | Light metal part activation for casting with another light metal part A cylinder-liner blank which preferably consists of a hypereutectic aluminum/silicon alloy and is cast into a crankcase. A special surface treatment achieves better material bonding of the liner in the crankcase. The blank has a roughness of 30 to 60 μm ... | 06/13/2000 |
| 6050323 | Diecasting structural components for automobile bodies The castings are cast in several casting slices. The casting slices of a casting are cast, staggered timewise in succession using the same method and from the same alloy but in different casting molds or different parts of a casting mold. At the seams, th... | 04/18/2000 |
| 5855700 | Bimetallic casting serving as a wear piece in vertical crushing mills and its method of manufacture The invention relates to a bimetallic casting serving as a wear piece in vertical mills and its method of manufacture. It includes a core (13) made of a ductile cast iron and provided with mechanical bonding elements in the form of pins (15) which are ren... | 01/05/1999 |
| 5758709 | Method of fabricating a rotor for an electric motor An electric motor includes a stator having a stator core, a start winding and first and second main windings. The first main winding and the start winding are configured to form a lower number of poles than the second main winding. The stator core forms a... | 06/02/1998 |
| 5660156 | Cast piston having reinforced combustion bowl edge A cast piston which includes a metal insert and a combustion bowl, with the metal insert defining a sharp undercut structure at an upper portion of the combustion bowl. The sharp undercut structure of the insert contains combustible gases and helps improv... | 08/26/1997 |
| 5620042 | Method of casting a composite disc brake rotor A generally annular rotor insert is formed by casting a metal matrix composite. The rotor insert includes a pair of brake friction plates which are disposed in mutually spaced apart relationship. The brake friction plates include inner surfaces and genera... | 04/15/1997 |
| 5398746 | Golf club head with integrally cast sole plate and fabrication method for same A metal wood golf club head with a hollow body shell of a first lightweight material and a sole plate of a second material having a higher specific weight density than the first material. The sole plate is attached to the shell without welding, fasteners ... | 03/21/1995 |
| 5392840 | Method of casting fail-safe composite metal structure A method for manufacturing a structural component includes forming a groove in an outer surface of a fiber reinforced body. Molten metal is introduced to an exposed surface of the groove and to a predetermined portion of the outer surface of the body. The... | 02/28/1995 |
| 5385421 | Fail-safe composite-cast metal structure A method for manufacturing a structural component includes forming a groove in an outer surface of a fiber reinforced body. Molten metal is introduced to an exposed surface of the groove and to a predetermined portion of the outer surface of the body. The... | 01/31/1995 |
| 5383513 | Hard facing casting surfaces with wear-resistant sheets A method for impregnating a metal product with a hard wear-resistant surface area comprises providing a wear-resistant layer in the form of a sintered sheet having a pattern which facilitates metallurgical bonding with a metal melt and optionally, at leas... | 01/24/1995 |
| 5299620 | Metal casting surface modification by powder impregnation A method for impregnating a metal product with a hard wear-resistant surface layer comprises providing a wear-resistant layer in the form of a partially sintered sheet having at least one peg formed therein; attaching the wear-resistant layer to a mold su... | 04/05/1994 |
| 5267600 | Hard facing casting surfaces with wear-resistant sheets A method for impregnating a metal product with a hard wear-resistant surface area comprises providing a wear-resistant layer in the form of a sintered sheet having at least one "pin" integrally attached onto a surface of the sheet. This wear-resistant lay... | 12/07/1993 |
| 5226469 | Composite structures and methods of manufacturing the same A composite structure is manufactured by joining a first material, preferably made of a magnetically permeable material and having a first joining surface in which a recess having an overhang surface is formed, to a second material preferably made of an e... | 07/13/1993 |
| 5188023 | Cast formed bi-metallic worm assembly and method A cast-formed bi-metallic worm assembly of a mechanical screw press for expressing liquids from fibrous materials and a method of manufacture therefor and the product produced by the method. The worm assembly is rotatably driven by the press drive shaft a... | 02/23/1993 |