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| Number | Title | Issue Date |
| 7464575 | Shearing method for thin plate A shearing method for a thin plate including forming a protruded product part having a first sagging part when the thin plate with a thickness of up to approximately 5 mm is performed with a half die cutting by pressing the half die cutting punch slightly larger tha... | 12/16/2008 |
| 7346975 | Method of manufacturing a stator for an inner type of rotor A method of manufacturing a stator core for an inner rotor type of motor. The core back of the stator core in the motor has an arc shaped inner circumferential surface therein that is offset from the center thereof. The stator core is produced from a laminated body ... | 03/25/2008 |
| 7343770 | Stamping system for manufacturing high tolerance parts A system and process for stamping parts having tolerances below 1000 nanometers. The inventive system and process is particularly suited for producing optoelectronic parts. The system includes a stamping press and one or a progression of stamping stations for suppor... | 03/18/2008 |
| 7305861 | Single action press for manufacturing shells for can ends A single action press for forming a shell used to make a can end includes a first tool and an opposed second tool. The first tool includes a die center insert that performs a forming operation on disc cut from a sheet of end material. The first tool is configured an... | 12/11/2007 |
| 7260970 | Hot forge forming facility A hot forge forming facility includes at least a material supply device, a heating device, a guiding device and a punching device. The material supply device carries a continuous supply of metal material in rolls. The heating device heats and softens the metal mater... | 08/28/2007 |
| 7237664 | Power transmitting apparatus A power transmitting apparatus, which can simultaneously achieve radial size reduction and improve strength of the driving clutch plate, has a clutch housing (2) and a plurality of driving clutch plates (6) each having projections (6a) pr... | 07/03/2007 |
| 7162906 | Method and apparatus for removing a carrier part from a carrier A method for removing from a carrier a carrier part with a housing arranged thereon, wherein prior to performing the separating operation a notched line is arranged in the carrier on at least one side of the carrier along at least a part of the length of a separatin... | 01/16/2007 |
| 7127929 | Forging work method A metallic plate member is provided. A first punch is operable to perform a first forging work to mold a first member in the plate member. The first member has a first function. A second punch is operable to perform a second forging work to mold a second member in t... | 10/31/2006 |
| 7107808 | Shearing method for thin plate A shearing method for a thin plate including forming a protruded product part having a first sagging part when the thin plate with a thickness of not more than approximately 0.3 mm is performed with a half die cutting by pressing the half die cutting punch slightly ... | 09/19/2006 |
| 7100789 | Metallic beverage can end with improved chuck wall and countersink The present invention describes a beverage can end which utilizes less material and has an improved internal buckle strength based on the geometric configuration of a chuck wall, inner panel wall and central panel, and which utilizes an inwardly oriented concave arc... | 09/05/2006 |
| 7086265 | Method for controlling the material flow during the deep-drawings of sheet metal, and deep-drawing tool A method for controlling the material flow during the deep-drawing of sheet metal involves compressing the edges of the sheet metal (1) between at least one upper stopper (13) and at least one lower stopper (6, 7) during the deep-drawing process... | 08/08/2006 |
| 7076986 | Process for forming a linking element for a push belt for a continuously variable transmission In a process for forming a linking element for a push belt for a continuously variable transmission, material is displaced from a central portion of the linking element during a blanking process, which central portion is substantially centrally located in the horizo... | 07/18/2006 |
| 7066702 | Aerosol can ends A dome of a domed aerosol can end is initially formed and then a crown of the can end is formed so that material flow within a workpiece from which the can end is formed is controlled to substantially eliminate wrinkling problems associated with the use of sheet mat... | 06/27/2006 |
| 6948350 | Wave-processing method and wave-processing die for core metal of wet friction material A ring-shaped core metal is pressed and compressed by a main punch and a counter punch so as to have a wave shape. Moreover, each group of three micro-protrusions provided on each of top points of the wave shape are cut in the core metal. Then, three notches are cut... | 09/27/2005 |
| 6907764 | Methods and apparatus for manufacturing flanged articles Methods for manufacturing a flanged article (21) that comprises a central depressed body (27) and a peripheral flange (23) may include press forming a material (10) in order to form an intermediate flanged article (20) that compris... | 06/21/2005 |
| 6904782 | Method of blanking an element for belt for continuously variable transmission A body having a thin region in substantially a half lower portion and a head joined to the body by a neck. When the element is blanked out of a metal sheet, an excess amount of metal produced by pressing the substantially half lower portion of the body flows from th... | 06/14/2005 |
| 6830419 | Aerosol can ends A dome of a domed aerosol can end is initially formed and then a crown of the can end is formed so that material flow within a workpiece from which the can end is formed is controlled to substantially eliminate wrinkling problems associated with the use of sheet mat... | 12/14/2004 |
| 6729172 | Methods and apparatus for manufacturing press formed articles Methods for manufacturing a press formed article (22) may include half die cutting a substantially flat material (1, 10) by press forming, thereby forming a first processed material (10′) having a first intermediate press formed article (16... | 05/04/2004 |
| 6453716 | Method of blanking elements of belt for continuously variable transmission Elements with heads confronting each other are blanked out of two opposite sides of an elongated metal sheet. The differences between thicknesses of the elements at a measurement point at or near necks of the elements and measurement points at ears of the... | 09/24/2002 |
| 6389866 | Method for forming an aerosol container closure A mounting cup for an aerosol container having radially outward extending dimples on the body portion of the mounting cup and radially inward extending indents in the skirt portion of the mounting cup; both the dimples and the indents being aligned with t... | 05/21/2002 |
| 6370931 | Stamping die for producing smooth-edged metal parts having complex perimeter shapes A stamping die produces gears or other parts having quality tooth forms or the like from smooth edged metal blanks. A lower portion of the die includes a trim punch, whose perimeter shape corresponds to the shape of the desired part, and a vertically mova... | 04/16/2002 |
| 6079249 | Methods and apparatus for forming a beaded can end A can end is formed from sheet material in a single acting press by blanking a workpiece and holding the workpiece between a blanking punch and a draw pad. The periphery of the workpiece is worked between a knockout and a crown ring to contour a crown. A ... | 06/27/2000 |
| 5823040 | Method and apparatus for forming a can shell A food can end or shell is formed from a thin metal sheet by blanking a circular disk from the sheet, gripping a peripheral portion of the disk, pressing a center portion of the disk upwardly relative to the peripheral portion, and forming upwardly projec... | 10/20/1998 |
| 5381683 | Can ends A method of forming a can end having a seaming panel 30, a chuck wall 32, and a central panel 17; the central panel being connected to the chuck wall by an outer anti-peaking bead 27 and the can end having one or more flexible beads 24,25 located concentr... | 01/17/1995 |
| 5187966 | Method and device for drawing containers of frustoconical shape and a container drawn thereby The device comprises a punch (2) of frustoconical shape and a die (1). The die comprises concentric rings (8, 9, 10) movable in the direction of the displacement of the punch, and pressure means (14, 15, 16) for exerting on the rings a predetermined force... | 02/23/1993 |
| 5161402 | Chamfering pressing machine A chamfering pressing machine including a blanking-chamfering section having a die, in which the die has a shearing die section, a chamfering die section and a guide section, a punch for shearing a sheet of material to form a product, the sheet of materia... | 11/10/1992 |
| 5123271 | Method for removing workpart blanks from sheet-metal strip A method of blanking workparts includes advancing the strip 26, 126 in a zig-zag fashion to a stationary blanking station 14, 114 disposed along axis A from which successive workparts are blanked from the strip 26, 126 and transferred along the axis A to ... | 06/23/1992 |
| 5067339 | Cutting and forming tool for complicated flat structures A tool comprises a lower part (2) and an upper part (1). The upper part (1) of the tool can slide on guides (3) and has a force plug (7) and a blanking punch (4). A die-plate (5) arranged on the lower part (1) of the tool contains a mold cavity (16) of a ... | 11/26/1991 |
| 5052207 | Apparatus for, and a method of, cutting a blank When a blank is cut from metal sheet which suffers from crystallographic anisotropy, there is a tendency for ears to be formed during subsequent forming operations, such as drawing or pressing. In order to compensate for this tendency, there may be used a... | 10/01/1991 |
| 5042284 | Method and apparatus for forming a can shell A sheet of metal is blanked by an annular die to form a disk, and a peripheral portion of the disk is gripped between the blank die and a lower pressure sleeve. The peripheral portion is shifted downwardly relative to a center portion of the disk engaged ... | 08/27/1991 |
| 5024077 | Method for forming container with profiled bottom A method of forming a container body having a profiled bottom in a continuous operation wherein the body is formed from a blank of material into an inverted cup, the cup is reverse drawn and a preliminary profile is imparted to the bottom of the cup, and ... | 06/18/1991 |
| 4998430 | Manufacture of rotor lamination for a dynamoelectric machine In a progressive die for punch press operations in which a strip of material is fed into the press and sequential operations are conducted on the strip including the separation of parts from the strip. The die is provided with a construction which forms a... | 03/12/1991 |
| 4870524 | Substrate for rigid disk storage media A substrate including a disk having a pair of opposed faces and being coined to provide a sub-micron flatness and smoothness for the disk faces. The coined disk can then be coated with a layer of storage material and used as a storage medium. Apparatus an... | 09/26/1989 |
| 4862722 | Method for forming a shell for a can type container The disclosure relates to a novel shell such as used in the manufacture of can ends, and to a method and tools for making such a shell. A non-circular blank having rounded corners is cut from thin metal. The blank is oblong in a direction transverse to th... | 09/05/1989 |
| 4773248 | Process for manufacturing a part having a tooth profile and boss The present invention relates to a process for the manufacture of parts having a tooth profile and boss by means of a press machine. The process of the present invention comprises a blank with a boss, which is produced in a prior operation by machining, c... | 09/27/1988 |
| 4760675 | Power compartment and method of fabricating A trench duct power compartment for use over a cellular raceway is fabricated by forming a rectangular-shaped blank and then stamping out a center section to leave portions which are contoured to the shape of the crests of the cellular raceway and thereaf... | 08/02/1988 |
| 4711115 | Method for forming memory discs by forging A flat, smooth material, e.g., metal sheet, suitable for use as a disc substrate for applying a recording media thereto for data storage devices, and a method of making same, are disclosed. The flat and smooth substrate is formed by applying sufficient pr... | 12/08/1987 |
| 4696177 | Method and apparatus for forming containers A method of forming a container in one or more double acting presses includes the steps of blanking, drawing an inverted cup and reverse drawing the inverted cup while retaining a flange thereon at a first station and then transferring the cup to a second... | 09/29/1987 |
| 4688415 | Method of manufacturing metal fasteners A metal fastener for a report folder and the method of manufacturing same comprising the steps of forming the fastener head, forming a single prong portion extending from the periphery of the head, and lancing the prong portion to form two separate prongs... | 08/25/1987 |
| 4677722 | Tapered piston pin A tubular piston pin for an internal combustion engine being of lightweight and high strength design with a cylindrical exterior surface and a double hourglass shaped aperture defined by thin-walled end portions; a thin-walled intermediate portion and two... | 07/07/1987 |
