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| Number | Title | Issue Date |
| 7549371 | Method and apparatus for clamping a substrate A stencil printer for printing viscous material on a substrate includes a frame, a stencil coupled to the frame, and a print head, coupled for the frame, to deposit and print viscous material over the stencil. The stencil printer further includes a substrate support... | 06/23/2009 |
| 7469635 | Method and apparatus for performing operations within a stencil printer An apparatus for performing operations on a surface of an electronic substrate comprises a frame, a dispenser, coupled to the frame, to dispense a material onto the electronic substrate, a stencil moveable on a gantry system having at least one aperture to receive t... | 12/30/2008 |
| 7458318 | Off-axis illumination assembly and method A stencil printer is provided for depositing solder paste onto a surface of an electronic substrate. The stencil printer includes a frame and a stencil coupled to the frame. The stencil has a plurality of apertures formed therein. The stencil printer further include... | 12/02/2008 |
| 7404861 | Imaging and inspection system for a dispenser and method for same Aspects of the invention are directed to systems and methods for dispensing materials onto a substrate. In one aspect, a dispensing system includes a dispenser having a dispensing outlet positionable over a top surface of the substrate, the dispenser having a substa... | 07/29/2008 |
| 7322288 | Method and apparatus for performing operations within a stencil printer An apparatus for performing operations on a surface of an electronic substrate comprises a frame, a dispenser, coupled to the frame, to dispense a material onto the electronic substrate, a stencil moveable on a gantry system having at least one aperture to receive t... | 01/29/2008 |
| 7310438 | Systems for detecting defects in printed solder paste A method of inspecting a stencil having apertures through which a substance is deposited onto an electronic substrate includes depositing the substance through the stencil and onto the substrate, capturing a first image of the stencil after the deposit of the substa... | 12/18/2007 |
| 7293691 | Electronic substrate printing A system for depositing solder paste on a print window of a printed circuit board through a stencil includes a housing providing a printing chamber, a depositor configured to move relative to the housing and to deposit the solder paste, a support device disposed in ... | 11/13/2007 |
| 7249558 | Solder paste dispenser for a stencil printer A stencil printer for printing solder paste onto a substrate includes a frame, a stencil, coupled to the frame, having apertures formed therein, a support assembly, coupled to the frame, to support the substrate in a printing position beneath the stencil, and a disp... | 07/31/2007 |
| 7213738 | Selective wave solder system The present invention relates to a selective wave solder machine. In particular, it relates to a system for calibrating and adjusting process points to account for variations in machines and circuit boards. Vision systems are used to locate fiducials on the processi... | 05/08/2007 |
| 7171898 | Method and apparatus for performing operations within a stencil printer An apparatus for performing operations on a surface of an electronic substrate comprises a frame, a dispenser, coupled to the frame, to dispense a material onto the electronic substrate, a stencil moveable on a gantry system having at least one aperture to receive t... | 02/06/2007 |
| 7149344 | Systems and methods for detecting defects in printed solder paste A method of analyzing an image of a substance deposited onto a substrate, the image comprising a plurality of pixels, includes defining a region of interest in the image, associating the region of interest with first and second perpendicular axis, wherein a set of p... | 12/12/2006 |
| 7121199 | Method and apparatus for supporting and clamping a substrate A stencil printer for printing viscous material on a substrate includes a frame, a stencil coupled to the frame, and a print head, coupled for the frame, to deposit and print viscous material over the stencil. The stencil printer further includes a substrate support... | 10/17/2006 |
| 7072503 | Systems and methods for detecting defects in printed solder paste A method of inspecting a stencil having apertures through which a substance is deposited onto an electronic substrate includes depositing the substance through the stencil and onto the substrate, capturing a first image of the stencil after the deposit of the substa... | 07/04/2006 |
| 7040228 | Self-contained vacuum module for stencil wiper assembly A vacuum plenum module of a stencil wiper assembly for wiping and removing excess material from a stencil of a stencil printer includes a wiper blade to wipe the stencil, a plenum chamber in fluid communication with the wiper blade, and a vacuum generator attached t... | 05/09/2006 |
| 7028391 | Method and apparatus for supporting a substrate An apparatus for performing operations on at least one surface of an electronic substrate having a first surface and a second surface includes a frame, a transportation system that moves the substrate through the apparatus, a substrate support system, coupled to the... | 04/18/2006 |
| 7017489 | Methods and apparatus for changing web material in a stencil printer A quick-change material module of a stencil wiper assembly for wiping a stencil of a stencil printer includes a supply roller to receive a roll of material, a take-up roller to receive used material, and a drive to move the material across the stencil between the su... | 03/28/2006 |
| 7013802 | Method and apparatus for simultaneous inspection and cleaning of a stencil An apparatus for performing operations on a surface of an electronic substrate comprises a frame, a dispenser, coupled to the frame, to dispense a material onto the electronic substrate, a stencil moveable on a gantry system having at least one aperture to receive t... | 03/21/2006 |
| 6955120 | Pressure control system for printing a viscous material A printer includes a print head for dispensing viscous material, such as solder paste. The print head defines a chamber and includes at least one source port and a dispensing slot. Within the chamber, a flexible membrane segregates the chamber into a dispensing regi... | 10/18/2005 |
| 6955121 | Methods and apparatus for cleaning a stencil A stencil wiper apparatus for wiping a stencil of a stencil printer includes a material supply assembly having a supply roller to deliver a roll of material, a take-up roller to receive the material, and a drive to move the material across the stencil between the su... | 10/18/2005 |
| 6948650 | Dross removal and solder reclamation improvements When dross is removed from a molten-solder reservoir, a substantial amount of molten solder is often removed with the dross. This molten solder can be separated from the dross and returned to reservoir via a conduit for reuse. Additionally, a skimmer for removing th... | 09/27/2005 |
| 6932280 | Adjustable needle foot for dispensing system A needle foot assembly for a dispensing system includes a needle nut, a rotatable bearing, a friction brake, and an end piece holding the needle foot. The needle foot assembly attaches the needle to a dispensing head of the dispensing system. Rotation of the bearing... | 08/23/2005 |
| 6913183 | Selective gas knife for wave soldering Selective gas knives for wave soldering provide for targeted gas flow at a particular location on a substrate, such as a printed circuit board. Both the temperature and flow rate of gas through a segment of a gas knife can be independently controlled. ... | 07/05/2005 |
| 6902052 | System and method for controlling a conveyor system configuration to accommodate different size substrates A rail position control system is provided that controls a conveyor system configuration to accommodate a plurality of differently sized substrates in an apparatus. The rail position control system includes at least one camera, which is mounted on a mounting surface... | 06/07/2005 |
| 6891967 | Systems and methods for detecting defects in printed solder paste A method of analyzing an image of a substance deposited onto a substrate, the image comprising a plurality of pixels, includes defining a region of interest in the image, associating the region of interest with first and second perpendicular axis, wherein a set of p... | 05/10/2005 |
| 6866881 | Dispensing system and method A dispensing system and method for dispensing material onto a substrate. The dispensing system includes a frame, a support, coupled to the frame, that supports the substrate at a dispensing position in the dispensing system, and a dispensing head, coupled to the fra... | 03/15/2005 |
| 6814810 | Apparatus for calibrating a dispensing system The present invention is directed to methods and apparatus for accurately controlling the quantity of material dispensed from dispensing systems. In one aspect of the present invention, a dispensing system includes a calibration system, which collects and measures a... | 11/09/2004 |
| 6775879 | Needle cleaning system A needle cleaning system, for use with a liquid dispensing system that dispenses a quantity of material through a dispensing needle or transfer pin, includes a vacuuming device coupled with a residual material collection device, wherein the collection device include... | 08/17/2004 |
| 6768083 | Reflow soldering apparatus and method for selective infrared heating A reflow soldering apparatus and method are provided for reflow soldering electrical and electronic components to circuit boards. The reflow soldering apparatus and method use selective infrared (IR) heating alone or in combination with convection heating to achieve... | 07/27/2004 |
| 6760981 | Compact convection drying chamber for drying printed circuit boards and other electronic assemblies by enhanced evaporation The invention provides a compact drying chamber for drying printed circuit boards and electronic connectors and components mounted thereto by enhanced evaporation to remove residual water and completely dry printed circuit boards. The compact drying chamber comprise... | 07/13/2004 |
| 6749655 | Filtration of flux contaminants A two-stage filtration system is coupled with an oven, such as a solder reflow oven, to remove a vapor stream from the oven and to remove organic compounds that have volatilized from a solder flux and other contaminants from the vapor stream. The filtration system i... | 06/15/2004 |
| 6739483 | Liquid dispensing system with improved sealing augering screw and method for dispensing A liquid dispenser has an augering screw that serves both a metering function and a valving function. The augering screw is axially movable between a position in which fluid can flow and a sealing position in which liquid flow through the nozzle is substantially pre... | 05/25/2004 |
| 6738505 | Method and apparatus for detecting solder paste deposits on substrates The invention relates to a method and apparatus for inspecting a substrate having a substance deposited thereon. The steps of the method include depositing the substance onto the substrate; capturing an image of the substrate; detecting variations in texture in the ... | 05/18/2004 |
| 6726083 | Closed loop solder wave height control system An apparatus for processing printed circuit boards including a system for measuring and controlling solder wave height generally comprises conveyor system for transporting printed circuit board through a number of processing stations. The system for measuring and co... | 04/27/2004 |
| 6694637 | Flux collection method and system Flux management systems and methods are provided for filtering vaporized flux from the gas of a reflow soldering oven. A flux management system includes a cooling chamber having a cooling medium through which the gas passes. The vaporized flux condenses o... | 02/24/2004 |
| 6688458 | System and method for controlling a conveyor system configuration to accommodate different size substrates A rail position control system is provided that controls a conveyor system configuration to accommodate a plurality of differently sized substrates in an apparatus. The rail position control system includes at least one camera, which is mounted on a mount... | 02/10/2004 |
| 6666370 | Solder-dross mixture separation method and apparatus The invention provides an apparatus that separates solder from solder dross, comprising first and second rolls and a fixture. The first roll has a substantially cylindrical surface and is rotatable about a first longitudinal axis. The second roll has a su... | 12/23/2003 |
| 6663712 | Dual track stenciling system with solder gathering head A dual track stencil system includes a first set of rails and a second set of rails, each of the rails being independently controlled for allowing for independent movement of circuit boards through the stencil system for processing. A stencil, having two ... | 12/16/2003 |
| 6626097 | Apparatus for dispensing material in a printer A printer for printing a viscous material at predetermined positions forming a pattern on a substrate. The printer includes a frame, a device, mounted to the frame, having a number of perforations arranged to form the pattern, a support apparatus, coupled... | 09/30/2003 |
| 6626106 | Cleaning apparatus in a stencil printer An apparatus and method for cleaning excess solder paste that is deposited on a stencil in a stencil printer. The apparatus includes a solvent bath containing a pool of solvent in which a bar is disposed in the solvent bath. The bar rotates in the solvent... | 09/30/2003 |
| 6619198 | Method and apparatus for dispensing material in a printer A printer for printing a viscous material at predetermined positions forming a pattern on a substrate. The printer includes a frame, a device, mounted to the frame, having a number of perforations arranged to form the pattern, a support apparatus, coupled... | 09/16/2003 |
