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 |
| 7762386 | Magnet assembly for a conveyor system A magnet assembly for a conveyor system transporting a ferromagnetic container includes a housing having a unitary configuration. The housing defines a pocket, and a magnetic circuit is disposed in the pocket. The magnetic circuit produces a magnetic field having a ... | 07/27/2010 |
| 7264111 | Magnetic specimen-transport system for automated clinical instrument A magnetic specimen-transport system for transporting racks of specimen-containers to or within an automated clinical instrument for analysis and/or processing. The magnetic specimen-transport system that is adapted to transport magnetically-attractable racks of spe... | 09/04/2007 |
| 7114614 | Magnetic centerguide A magnetic centerguide for a grid structured for travel along the path of a conveyor. The grid defines a support surface that supports a pan. The guide generally comprises a magnet-carrying guide member mounted to the grid, normally but not necessarily on the grid c... | 10/03/2006 |
| 7086525 | Conveyor for continuous proofing and baking apparatus Conveyor chains of the type utilized in commercial ovens and proofers are provided with improved bearing support for the rotating and pivoting components of the chains. The rotating components comprising antifriction bearings constructed from superior components whi... | 08/08/2006 |
| 6957734 | Work fixing device A work fixing device in which the load of the conveyor is not increased even when using a fixed magnet. The work fixing device comprises: plurality of plates, on each plate of the plurality of plates a work with a ferromagnetic portion being mounted; a transporter f... | 10/25/2005 |
| 6913137 | Method of retrofitting magnetic guide to a grid A method of retrofitting a magnetic centerguide to a grid. The grid is of the type adapted to carry a pan along a path defined by a conveyor to which the grid is attached. The centerguide is of bifurcated construction which is split at one or both ends of its struct... | 07/05/2005 |
| 6561341 | Apparatus for separating and supplying cylindrical cans and method therefore An apparatus whereby cylindrical cans formed of a ferromagnetic material and transported at high speed along a carrying conveyor in such a contiguous way as having no gaps between adjoining cylindrical cans are separated so as to provide a spacing therebe... | 05/13/2003 |
| 6375184 | Sheet conveying apparatus and image forming apparatus The present invention relates to a sheet conveying apparatus comprising a conveyance belt, on which stripe shaped electrodes each fed to a voltage different from that fed to one another are alternatively arranged, for conveying a sheet in attracting the s... | 04/23/2002 |
| 6343690 | Specimen carrier for automated transport system and method and apparatus for identifying same A specimen carrier comprises a unitary structure for receiving and retaining a specimen container in an upright orientation. Such unitary structure is defined by a pedestal having upper and lower platforms connected by a stem. Extending upwardly from the ... | 02/05/2002 |
| 6296145 | Parts feeder using strip carrier A parts feeder is provided which is designed to pick up parts carried by a strip carrier. The strip carrier is moved intermittently to a pickup station and has storage chambers arrayed in a lengthwise direction thereof. The storage chambers has openings a... | 10/02/2001 |
| 5996809 | Flatware sorting machine A flatware sorting machine including a feed bin for holding unsorted flatware, a sorting system for sorting the flatware, and a flatware pick-up and transport system for retrieving the flatware from the feed bin and transporting them to the sorting system... | 12/07/1999 |
| 5871084 | Magnetic conveyor system A conveyor system for transporting at least one magnetically attractable article. The conveyor system includes an elongate track extending along a path including at least one arcuate section; a chain conveyor mounted for movement through the track; at lea... | 02/16/1999 |
| 5817177 | Apparatus for application of liquid materials onto substates A method and apparatus for application of liquid materials onto substrates is provided. The present invention allows high speed selective application of curable liquids to a continuous succession of discrete substrates and subsequent curing of those liqui... | 10/06/1998 |
| 5727369 | Methods for conveying objects through apparatus, packing apparatus and methods for packing materials in cartons Objects such as cartons (16) supported in transport holders (110), are carried on a first conveyor wheel (140) and transferred to a second conveyor wheel in respective transfer operation. Each conveyor wheel has circumferential spaced recesses for carryin... | 03/17/1998 |
| 5711216 | Apparatus for decorating articles An apparatus for decorating articles comprises a transport path with at least one decorating station, and at least one article carrier displaced by a circulating transport system along the transport path. The transport system circulates in a horizontal pl... | 01/27/1998 |
| 5649619 | Magnetic conveyor system A conveyor system for use in a continuous proofing and baking apparatus. The system has a conveyor chain, having a plurality of links, which moves along a track. Each link supports a product supporting grid, which has four circular rings. Pole pieces are ... | 07/22/1997 |
| 5579897 | Magnetic conveyor system A conveyor system for use in a continuous proofing and baking apparatus. The system has a conveyor chain, having a plurality of links, which moves along a track. Each link supports a product supporting grid, which has four circular rings. Pole pieces are ... | 12/03/1996 |
| 5299681 | Conveyor equipment Retainer grooves are formed widthwise at a constant pitch on the external surface of a timing belt to retain the lead terminals of an electronic component therein. A magnet is mounted to a rail for guiding the timing belt to attract the lead terminals of ... | 04/05/1994 |
| 5188216 | Magnetic grid A conveyor system for use in a continuous proofing and baking apparatus to convey ferromagnetic dough receptacles comprising an elongate track with a conveyor chain mounted in the track and a plurality of product supporting grid assemblies on the chain wh... | 02/23/1993 |
| 5160018 | Device for retaining crown caps Device for retaining crown caps having a carousel for the support and transfer of the caps which includes a disk which rotates about a vertical axis and is peripherally provided with a series of angularly equidistant recesses which are open outwardly. A s... | 11/03/1992 |
| 5147033 | Continuous proofing and baking apparatus having magnetic conveyor system A conveyor system for use in a continuous proofing and baking apparatus. The system has a conveyor chain, having a plurality of links, which moves along a track. Each link supports a product supporting grid, which has four circular rings. Pole pieces are ... | 09/15/1992 |
| 5115905 | Magnetically secured conveyor system for printed circuit assemblies An improvement to a conveyor system is disclosed which comprises a system of magnets and removable ferromagnetic strips which may be easily attached to Printed Circuit Assemblies (PCA's). In one preferred embodiment, the magnets are mounted to brackets wh... | 05/26/1992 |
| 5056654 | Magnetic conveyor system A conveyor system for use in a continuous proofing and baking apparatus. The system has a conveyor chain, having a plurality of links, which moves along a track. Each link supports a product supporting grid, which has four circular rings. Pole pieces are ... | 10/15/1991 |
| 4972941 | Continuous proofing and baking apparatus having magnetic conveyor system A conveyor system for use in a continuous proofing and baking apparatus. The system has a conveyor chain, having a plurality of links, which moves along a track. Each link supports a product supporting grid, which has four circular rings. Pole pieces are ... | 11/27/1990 |
| 4836360 | Continuous proofing and baking apparatus having magnetic conveyor system A conveyor system for use in a continuous proofing and baking apparatus. The system has a conveyor chain, having a plurality of links, which moves along a track. Each link supports a product supporting grid, which has four circular rings. Pole pieces are ... | 06/06/1989 |
| 4801003 | Conveyor and devices for conveying movable planes on automatic distribution lines showing a plan preferably quadrangular The present invention consists in employing conveyors and/or pushers in order to permit movable planes (7,110) to be advanced along bearing guides (1, 102) showing a quadrilateral shape. The advancing motion of the movable planes (7, 110) is caused by sev... | 01/31/1989 |
| 4752172 | Apparatus for making a lid having a tear-away opening The apparatus of the invention provides a coat of lacquer or varnish on a tear-off cover, which is formed from a thin ferromagnetic metal, has a circumferential supporting lip and is equipped with a tear-off opening made by scoring and/or punching in or o... | 06/21/1988 |
| 4731171 | Process for making a lid having a tear-away opening The process and apparatus of the invention provide a coat of lacquer or varnish covering a tear-off cover, which is formed from a thin ferromagnetic metal, has a circumferential supporting lip and is equipped with a tear-off opening made by scoring and/or... | 03/15/1988 |
| 4722283 | Magnetic pick up system for rail beds and method A magnetic pick up system for tie plates uses a pick up head having a rotatable wheel with a plurality of fingers pivotably attached to the wheel. The fingers, which are magnet pole pieces adapted to magnetically grip tie plates and lift them from the gro... | 02/02/1988 |
| 4597490 | Device for lifting, transferring and depositing objects A lifting surface, a deposit surface and a transfer assembly is equipped with electromagnets and counter-magnets, which when they are activated permit the grasping of one or more thicknesses of a material supplied upon the surface. The assembly transfers ... | 07/01/1986 |
| 4509892 | Apparatus for manipulating workpieces having plane parallel surfaces Apparatus for supporting, locating and transferring plate-like or disc-shaped workpieces between several stations or between several machines where each of two plane parallel surfaces of each workpiece is subjected to one or more treatments has at least t... | 04/09/1985 |
| 4434818 | Wire feeding and wire forming device for paper clip making machine An apparatus used for the paper clip making machine downstream of the cutting machine comprises, a set of conveyors including continuous belt continuous chains, transferring wheels for advancing the cut wires, pieces of magnet properly located on the conv... | 03/06/1984 |
| 4356905 | Removing magnetic articles from a carrier Elongated magnetic diodes 12 are removed from a carrier 20 having a periphery along which the diodes 12 are advanced. A magnetic bin 75 has spaced sidewalls 76 and 77 extending to either side of the periphery of carrier 20. There is established between an... | 11/02/1982 |
| 4324600 | Introducing elongated magnetic articles into vacant positions on a carrier Elongated magnetic articles 12 are introduced into vacant positions 31 on a carrier wheel 18 for a given operation. A magnetic bin 40 has a feed end in communication with wheel 18 and includes spaced sidewalls 41-44, with arm sections 43-44 thereof extend... | 04/13/1982 |
| 4282908 | Transferring and transporting elongated magnetic articles for treatment such as lead straightening Elongated magnetic articles 12 are transferred directly from a magnetic bin 17 and transported on a member 80 having deep slots 84 to retain the articles 12 for treatment. In a preferred example, the articles 12 include some articles 13 having undesirably... | 08/11/1981 |
| 4136765 | Methods of and apparatus for orienting electrically asymmetrical devices with magnetic handling In making electrically asymmetrical semiconductor devices, it is generally necessary to orient all of the devices into a common polarity at some point in the manufacturing operation. To accomplish this, a magnetic turning chute receives those devices whic... | 01/30/1979 |
| 3966039 | Methods and apparatus for continually delivering wire closure elements A depositing mechanism deposits wire bottle closure elements sequentially onto a conveyor. The conveyor transports a continuous supply of closure elements to a bottle wiring station. Closure elements which are not utilized at the wiring station return on ... | 06/29/1976 |
| 3941242 | Axial lead component feeder with anti-bunching mechanism A device for feeding axial lead electrical components is disclosed. The device consists of a magnetic feed bin which is constructed to produce a magnetic field that suspends the components in the bin and moves them towards a pick-up wheel. The pick-up whe... | 03/02/1976 |
