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 |
| 8033155 | Press die set for forming flange and flange forming method The present invention relates to a press die set for forming a flange that bends an edge of a part, such as a door panel and a hood panel, at a right angle in a press-forming direction and bends an edge adjacent to the edge at a negative angle, and a flange forming ... | 10/11/2011 |
| 7712346 | Tooling die slide driver A slide driver assembly for use in a multi-station or a single-station progressive tooling die includes die sections that are operative to move between an open position and a closed position to perform a first operation on a work piece located between the die sectio... | 05/11/2010 |
| 7640779 | Holder unit and hemming apparatus having the holder unit A hemming apparatus (1) includes a holder unit (2), a lower die (3) on which the holder unit (2) is installed, and an upper die (4) which is installed on the lower die (3) vertically movably. The holder unit (2) inclu... | 01/05/2010 |
| 7624615 | Wedge activated rotating filler cam A rotating filler cam system including a lower die having a plurality of filler cams rotatably connected to thereto. A plurality of wedge assemblies are connected to a drive shaft, wherein upon actuation of the drive shaft, the wedge assemblies are driven to contact... | 12/01/2009 |
| 7434443 | Compound press-forming apparatus and compound press-forming method An upper die 7 that is fixed to a ram 4d of a press machine 1 includes a forming punch 9 for conducting drawing, forming and listing, upper die-side cutting edges 13a for conducting trimming, and flat-face piercing pu... | 10/14/2008 |
| 7431502 | Universal cam slide Universal aerial and die-mount cams, each having an adapter assembly, a driver, and a slide sandwiched between the adapter assembly and the driver. The adapter assembly has a universal adapter having an arcuate portion that is angularly adjustable within arcuate rec... | 10/07/2008 |
| 7430889 | Device for forming protruding parts on the carrier plate of a brake-lining The inventive device makes it possible to form protruding parts (18) teeth, spigots, corrugations and the similar on a carrier plate (8) of a brake-lining by introducing a tool into said carrier plate (8) of a brake-lining with the aid of a pres... | 10/07/2008 |
| 7363794 | Bearing structure and press molding apparatus having the structure While a rotational die and a predetermined position of a lower mold in which the rotational die is provided can be set in a zero contact manner, operation of setting the rotational die in the predetermined position of the lower mold can be easily performed, and occu... | 04/29/2008 |
| 7340935 | Equipment for producing corrugate fin The equipment for producing a corrugate fin is capable of forming corrugated sections by one closing action. The equipment comprises: a plurality of punches respectively having projections, each of which is upwardly projected from an upper face of the punch and has ... | 03/11/2008 |
| 7337649 | Press action simulator for aerial cam set up Adjustment of the tools (24) on the tool holder (10) in an Aerial Cam of a metal stamping press may be readily effected by opening the press to remove the upper die (14) from the stamping area and then removing the tool holder (10) on the... | 03/04/2008 |
| 7331244 | Stamping press line simulation device and method An apparatus and method for testing a stamping press die that has includes a plurality of mechanical devices. The apparatus includes a plurality of pneumatic connections for supplying pressurized air to each of the plurality of mechanical devices; a plurality of val... | 02/19/2008 |
| 7243524 | Negative-angle press-working die Operations for uniting together a fixed support base 4 for fixedly supporting a workpiece W and a support die and for composing and decomposing a negative-angle press-forming die to take out a product processed by a negative-angle press-forming process are pr... | 07/17/2007 |
| 7204120 | Apparatus for cutting a workpiece An apparatus is described for forging a workpiece (3) with an intermittently drivable clamping head (4) for the workpiece (3) and with a counter-holder (5) for receiving the end of the workpiece (3) averted from the clamping head (... | 04/17/2007 |
| 7191635 | Press mounted cam A press mounted cam has a slide guided on an adapter by structural features including as one or more T blocks fixed to the slide and received in a respective channel formed in the adapter. In an aerial cam embodiment, a vertical clearance space is provided between t... | 03/20/2007 |
| 7165438 | Wedge driving tool having mutually adjustable elements for the cutting and/or non-cutting shaping of a sheet metal workpiece in a press A wedge driving tool for cutting and/or non-cutting shaping of a sheet metal workpiece in a press includes a mould- and/or tool-bearing working slider, which may be displaced between a slider bed and a driver at a predetermined angle. For obtaining a working slider ... | 01/23/2007 |
| 7134313 | Method and tool mounting for adjustment of tools on a press mounted cam A tool mounting and method for adjustably mounting a tool holder on a cam slide of a press mounted cam also including an adapter body and driver. The tool mounting includes a tooling plate adjustably secured to the cam slide by a series of dowel pins closely fit in ... | 11/14/2006 |
| 7114364 | Cam slider The invention relates to a cam slider with an upper guiding part containing a cam element (20) and a cam guiding element (10), and with a lower guiding part containing a driver element (40), the upper guiding part (10, 20) being holdable ... | 10/03/2006 |
| 7080542 | Press mounted cam and method of manufacture A press mounted cam has an adapter, slide and a driver with range of sizes and working angles provided at low cost by driver and/or adapter constructions having base plates and a series of side by side upright plates of a number corresponding to a given length with ... | 07/25/2006 |
| 7047779 | Curvilinear punch motion for double-action hot stretch-forming A method for forming sheet metal articles, such as automotive body panels, having complex curvatures. Opposing, complementary, pre-form and finish-form tools are used in a single press. A sheet of hot blow-formable sheet metal alloy, heated to a forming temperature,... | 05/23/2006 |
| 7043956 | Module cam and method for aligning and fastening tool To facilitate aligning and setting of a punch in a die of a press machine, a module cam assembly comprises a cam unit and an L-shaped module base. The cam unit comprises a cam driver, a cam slider equipped with a positive return to be driven by the cam driver, and a... | 05/16/2006 |
| 6997029 | Roller cam mechanism and drive assembly with positive retraction A roller cam mechanism and driver assembly which features a positive retraction cam elements comprised of auxiliary rollers and side plate slots which cooperate upon failure of a retraction spring compressed by advance of a tooling slide to cause positive retraction... | 02/14/2006 |
| 6990844 | Narrow aerial and die-mount cams Narrow aerial and die-mount cams, each having a cam adapter, a driver and a slide sandwiched between the cam adapter and driver. The narrow aerial cam slide has an elongate primary portion that has a T-shaped cross-section and has a primary bearing surface, and the ... | 01/31/2006 |
| 6986296 | Cam apparatus A cam apparatus includes: a cam driver; a cam slide adapted to move in contact with the cam driver and having a through hole; a cam-slide supporting device having a cam-slide supporting base which movably supports the cam slide, has a front wall portion disposed at ... | 01/17/2006 |
| 6978651 | Roller cam A roller cam with pairs of sliding surfaces and wear plates located in an upper plane and with pairs of laterally slanted sliding surfaces and pairs of laterally slanted guiding wear plates located in a lower plane. The guiding wear plates are longitudinally contain... | 12/27/2005 |
| 6843094 | Beltline hemming machine A mechanism for hemming the beltline of a vehicle door panel is combined with a mechanism for hemming the outside perimeter of the door panel, and the two mechanisms are driven by a common drive. The beltline hemming steel acts on the beltline hem before the outside... | 01/18/2005 |
| 6755070 | Cam-type press system A cam-type press system is provided which includes a cam base slidably mounted on a lower die and securing a material panel with a formation pad: cam base steel is mounted on the cam base corresponding to a height of the formation cam. The cam base steel is performs... | 06/29/2004 |
| 6691546 | Rivet nut setting tool The present invention includes both the device and the method for utilizing two wedge shaped halves to retract a stud used to deform rivet nut material, thereby setting the rivet nut. The tool consists of two wedge shaped halves and a stud passing through... | 02/17/2004 |
| 6644089 | Method for actuating a tappet in a lifting or clamping device, especially for folding sheet metals in car manufacture Device for actuating a slide or tappet (1) in a lifting or clamping device, especially for folding sheet metals in automobile manufacture. A slide (1) is guided in a base stand (3) and can be driven. The slide (1) supports the folding bed and presses the ... | 11/11/2003 |
| 6619095 | Press apparatus A pressing apparatus provides an urging force for a slide cam to press only when necessary, and elsewhere this pressing-force is maintained as small as possible. Abnormal wear and seizure of the slide cam, slide cam base and the sliding portion of the dri... | 09/16/2003 |
| 6619100 | Crimping tool for metal hub plate A crimping tool is used to attach a metal hub plate to a plastic hub for a data storage disk. The hub is bonded to the data storage disk, and the metal hub plate allows the disk to be magnetically clamped to a spindle of a disk drive. The metal hub plate ... | 09/16/2003 |
| 6539766 | Rotary cam moving apparatus for negative-angle forming die A negative-angle forming die includes a lower die half and an upper die half. A rotary cam is rotatably provided in the lower die half, and a slide cam is slidably opposed to the rotary cam. An automatic retractor is provided in the lower die half for piv... | 04/01/2003 |
| 6526800 | Sheet fabrication center and methods therefor of optimally fabricating worksheets A sheet fabrication machine is equipped with different servo motors for actuating its upper tool and its lower die. A direction converting mechanism is provided to each of the tool assembly and the die assembly so as to convert the non-vertical forces out... | 03/04/2003 |
| 6526797 | Negative-angle forming die The present invention provides a negative-angle forming die comprising a lower die half having a supporting portion for placing a sheet metal work, and an upper die half to be lowered straightly downward onto the lower die half for forming the work, an in... | 03/04/2003 |
| 6523386 | Negative-angle forming die The present invention provides a negative-angle forming die comprising a lower die half and an upper die half. The lower die half has an intrusion forming portion, a rotary cam, a slide cam, and an automatic retractor. The work is placed on the lower die ... | 02/25/2003 |
| 6519998 | Radial press A radial press comprises two press yokes and eight crimping members. The yokes are arranged on a plane that is perpendicular to the press axis and are located diametrically opposite the press axis and can be moved towards each other in a straight line by ... | 02/18/2003 |
| 6519995 | Rotary cam driving apparatus for negative-angle forming die Disclosed is a negative-angle forming die. The die has upper and lower halves. The upper die half has a supporting portion for receiving a sheet metal work, and an intrusion forming portion. The lower die half carries a plate-like cam which can be moved t... | 02/18/2003 |
| 6484549 | Die block assembly A die block assembly includes a sliding block (50) and a die plate (70). The sliding block has a base (53) from which a pair of slanted rails (58) extends. A protrusion (61) with a vertical outer wall (62) extends from an end of the base, between the rail... | 11/26/2002 |
| 6401514 | Sheet fabrication center with a force direction conversion drive A sheet fabrication machine includes a direction convert mechanism that converts the movement of the driving mechanism along one direction to drive the tool for fabricating a worksheet in another direction. The direction conversion mechanism includes a ca... | 06/11/2002 |
| 6336399 | Energizing device for a press die A press die includes a lower die, a slide cam movable along the lower die, and an energizing body disposed between the slide cam and the lower die to abut against both surfaces thereof for biasing the slide cam for movement in one direction along the lowe... | 01/08/2002 |
| 6327887 | Process for shaping a work piece The invention relates to process for working a workpiece (1) held between a counterholder (4) and a guide (5, 5.2) by a clamping force (14.1, 14.2) by forming a profile (3, 3.1), e.g. precision toothing, in a surface (2) of the workpiece (1) by means of a... | 12/11/2001 |
