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 |
| 7421875 | Cold-headed standoff A process for cold forging a metal fastener such as a self-clinching standoff includes a punch and die set at the final head trimming station which produces the shear burr only on the underside of the fastener head where it is not visible after installation. A knock... | 09/09/2008 |
| 7186429 | Food product marking apparatuses and methods A method and apparatus for marking, imprinting or applying a pattern, design or mark to a plurality of individual pieces of food product to be divided from a sheet of food product is described. In one aspect of the invention, a method may include the steps of supply... | 03/06/2007 |
| 7171882 | Knife-like cutting die A knife-like die for cutting a thermoformed plastic article from a sheet of thermoformable plastic. The die includes a die build up plate that is mounted to a first platen and a striker plate that is mounted to a second platen. The die further includes a die board h... | 02/06/2007 |
| 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 |
| 7073420 | Hydraulic cutting device for cutting a raw aluminum material A hydraulic cutting device for a raw aluminum material includes an input tract for transporting the raw aluminum material to a cutting seat to be cut by the incorporation of a movable cutting block and a fixed cutting block. A measuring device is provided to measure... | 07/11/2006 |
| 7051633 | Ampoule card splitter A device for splitting apart a card of thermoplastic ampoules is described. The splitter device includes a card receiving base, a cutter assembly, and a pusher assembly for pushing the card along the base through the cutter assembly so as to divide the card into sep... | 05/30/2006 |
| 7011004 | Trimming apparatus and method for fuel cell membrane/electrode coupling and transporting apparatus A membrane/electrode assembly trimming apparatus (10) made up of a lower trimming die (14) on which a membrane/electrode assembly (65) is set, an upper trimming die (16) having a trimming blade (15) and a pressing member (17... | 03/14/2006 |
| 6979153 | Deep-grooving insert having stepped cutting edge A deep-grooving chip-forming cutting insert includes a rear mounting portion, a front cutting portion, and a pair of side walls, each side wall extending along the front and rear portions. The front cutting portion includes a front end surface, a top surface, and a ... | 12/27/2005 |
| 6912941 | Steel rule die with removable cutting units A steel rule die for cutting cloth and synthetic materials. The cutting die includes a primary substrate and a plurality of cutting units that are removably attachable to the substrate in such a manner that they are easy to adjust, remove and replace. The cutting un... | 07/05/2005 |
| 6913177 | Blanking method and device into a cutting machine for plate elements Blanking device in a cutting machine for plate elements in a sheet, such as a paper, cardboard or plastic sheet, which had been previously cut into several blanks that are maintained together in the sheet by a number of nicks: a lower tool, an upper tool movable tow... | 07/05/2005 |
| 6902754 | Blunt edge dough cutter A dough cutting apparatus is suitable for cutting a sheet of dough. The dough cutting apparatus includes a structure defining a blunt dough engaging portion. The present invention can be embodied in a number of different ways, including a wheel cutter, a rotary drum... | 06/07/2005 |
| 6523445 | Loose lamination die with rotating blanking station In a method and apparatus for rotating loose laminations in a loose lamination die, a strip is fed through the die to a rotatable blanking chamber of a blanking station. There, a punch engages with a die ring to punch a lamination free from the strip. The... | 02/25/2003 |
| 6026725 | Panel cutting apparatus with waste repellant die structure A magnetic cutting assembly and waste removal system is provided for cutting a panel from an envelope blank or the like. The die holder has a magnetic outer surface and a plurality of surface orifice therein radially communicating with corresponding feed ... | 02/22/2000 |
| 5996456 | Punching apparatus An apparatus for punching transversely throughgoing coaxial holes in spaced walls of a workpiece has a holder supporting the workpiece and an outer tool part formed with a pair of transverse bores and displaceable between an advanced position engaged over... | 12/07/1999 |
| 5906702 | Method and apparatus for removing profiles A method for forming a plurality of holes, creating profiles, in a plurality of vinyl layers using a hollow portion of an RF sealing die and for removing the profiles from the die using a base plate punch and a removal means. The method includes providing... | 05/25/1999 |
| 5768963 | Method and apparatus for punching a stack In the punching of a stack (7) of sheet-like articles, especially labels made from paper or paperboard, with a punching knife (4), a punching ram (3) which can be moved to the punching knife (4) and a counter-pressure plunger (5) which is guided through t... | 06/23/1998 |
| 5647265 | Tool and system for machining a round strand A system including a cutting tool is provided for cutting a round strand m a soft, rubber-based material. The cutting tool comprises a tube having an inner and an outer surface which form a sharp leading edge. The tool further comprises a blade which fix... | 07/15/1997 |
| 5566601 | Apparatus for cutting containers, away from a foil web An apparatus for cutting away containers, arranged in rows in a foil web having support platforms, which are rotatable perpendicular to the conveying direction and are surrounded by receptacles of a vertically movable die. To cut the containers away from ... | 10/22/1996 |
| 5546839 | Pneumatic ejector A pneumatic ejector comprises a rigid support member having a base portion and an upstanding boss integral with the base portion, and an elastomeric ejection element having a diaphragm portion and a skirt portion surrounding the diaphragm portion and secu... | 08/20/1996 |
| 5388390 | Dough cutting and packing apparatus A dough cutting and packing apparatus for cutting a sheet of dough into dough pieces and transferring the dough pieces to containers. A cutting unit is defined by a plurality of cutting plates having dough retaining openings. The sheet of dough is partial... | 02/14/1995 |
| 5140880 | Push-pull apparatus and method for web cutting and trim strip removal An improved device for cutting a single or multiple-layer continuous web is equipped with a closed-loop, fan-driven air system to "push" air onto the leading edge of the continuous web and "pull" air from about the knife edges to capture the waste materia... | 08/25/1992 |
| 5031495 | Sheet punching cutter A cutter for punching a sheet of material having a fixed block disposed so as to face one side of the sheet, a punching blade disposed at the opposite side of the sheet relative to the fixed block, a cutting blade disposed spacedly and along the punching ... | 07/16/1991 |
| 4951537 | Apparatus for producing a blank from stock material An improvement to a stamping press having a blanking punch and die combination comprising a blanking die defining an opening, a cooperating blanking punch dimensioned closely to mate with the opening wherein the die edge defining the opening is radiused t... | 08/28/1990 |
| 4934230 | Die stamping system A die stamping system includes opposed die members which clamp a metal workpiece to be shaped, cut or pierced after which the die members are moved away from one another and a part is subsequently ejected wherein the ejector is controlled for a selected d... | 06/19/1990 |
| 4892019 | Sheet punching cutter A cutter for punching a sheet of material having a fixed block disposed so as to face one side of the sheet, a moving blade disposed at the opposite side of the sheet relative to the fixed block, and a transporting roller disposed inside the moving blade.... | 01/09/1990 |
| 4862779 | Punching cutter for thin material A cutter of the present invention comprises a punching member having a punching edge and a receiving member for receiving the punching force of the punching member, the receiving member having a sandwich structure comprising two plate materials and an ela... | 09/05/1989 |
| 4846029 | Shearing method and apparatus A heated aluminum log which is to be sheared is inserted through a stationary die and a movable die. A clamp of the stationary die is then moved towards an axis of that die to clamp the log against a diametrically opposite portion of the internal surface ... | 07/11/1989 |
| 4823660 | Label cutting device and method A device and method for cutting labels from a strip of heat meltable material comprises a frame, a die plate mounted for resilient movement on the frame and a punch mounted for movement toward and away from the die plate. The punch carries a cutting edge ... | 04/25/1989 |
| 4774865 | Die stamping system A die stamping system for use in a fine blanking apparatus that includes opposed die members which clamp a metal workpiece to be cut and pierced after which the die members are moved away from one another and the slugs pierced from the blank and the cut b... | 10/04/1988 |
| 4750393 | Method for punching a cylindrical tube A method of punching cylindrical tubes with openings from the inside to the outside. In accordance with the method, the punching apparatus includes a mandrel that slidably supports the dies and a backup die that includes a slug ejecting punch which serves... | 06/14/1988 |
| 4730528 | Button cover cutting press apparatus Button cover cutting press apparatus includes a frame and a cutter secured to a movable cutting head, and the cutter head and cutter are moved relative to the frame on a central guide rod by means of a lever. The guide rod also acts as an ejector to remov... | 03/15/1988 |
| 4728239 | Cap lining machine A cap lining machine constructed with a minimal number of mechanical parts includes a spring-biased shuttle feed for moving the caps into the punching and insert position. A cam pulls the shuttle back against the bias of the spring; so that upon release b... | 03/01/1988 |
| 4708042 | Punching machine With a punching machine with at least one punching carriage, which can be moved transverse to the advance direction of a material belt, with a piston cylinder unit arranged in the punching carriage, which effects the punching stroke of a tool stamp and, w... | 11/24/1987 |
| 4665785 | Trim press A multiple station sequentially operating trim press is arranged to receive workpieces for subsequent transfer from a loading station to a treatment station by means of a pivotally mounted workpiece support. After trimming and deburring, the workpiece is ... | 05/19/1987 |
| 4522095 | Hole punch for a cutting die A punch for a cutting die is provided for forming holes in corrugated board or the like. The hole punch includes a tubular metal member of circular transverse cross section having one end substantially flush with the back surface of a die plate in which i... | 06/11/1985 |
| 4480507 | Method for manufacturing a punching unit A cutting die assembly for cigar wrappers is manufactured by rigidly interconnecting a knife blade unit and a die assembly on a common carrier. The die assembly has an opening of particular shape bounded by a generally planar margin over which tobacco lea... | 11/06/1984 |
| 4373413 | Punch press apparatus for placement and alignment of a knife holder In apparatus for the placement and alignment of punch knives mounted in a knife holder on a punch press, a first swivel arm is pivotally supported at one end on a support for pivotal movement about a vertical axis. A second swivel arm is supported on the ... | 02/15/1983 |
| 4369682 | Rotary die cutters having magnetically-attracted waste ejector A rotary die cutter comprises a rotary soft anvil coacting with a rotary hard anvil mounting one or more cutting rules, or forms. Each cutting rule has within the area defined by the rule a metal or metal-containing pusher adapted to be moved radially out... | 01/25/1983 |
| 4295436 | Cap lining machine A cap lining machine includes a circular score cutter and an anvil to produce cap liners in a rapid and dust free manner. The machine is fed by two streams of caps. The first stream is a conventional gravity feed. The second stream indexes a cap into posi... | 10/20/1981 |
| 4224851 | Knockout for punch scrap A scrap knockout for use with a rotary punching apparatus includes a knife cylinder equipped with punch blades on the outer peripheral surface, and an anvil cylinder having a layer against which the blades are pressed, so as to punch a workpiece fed in be... | 09/30/1980 |
