Patents by Inventor William Holm
William Holm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20110017841Abstract: A method and a system for jetting droplets of viscous medium, such as solder paste, onto a substrate, such as an electronic circuit board. The volume of the droplets are adjusted by regulating the amount of viscous medium that is fed into a jetting nozzle for subsequent jetting of the viscous medium droplets therefrom. The exit velocity of the jetted droplets is adjusted or maintained substantially constant by regulating the velocity with which the viscous medium is impacted. Furthermore, the rate at which viscous medium is fed, for instance by a feed screw, into the nozzle is adjusted in order to regulate the feeding time required for feeding the viscous medium into the jetting nozzle, for instance in order to maintain a constant feeding time.Type: ApplicationFiled: July 23, 2010Publication date: January 27, 2011Applicant: MYDATA AUTOMATION ABInventors: William HOLM, Kenth Nilsson, Johan Berg, Johan Kronstedt, Häkan Sandell
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Patent number: 7767266Abstract: A method and a system for jetting droplets of viscous medium, such as solder paste, onto a substrate, such as an electronic circuit board. The volume of the droplets are adjusted by regulating the amount of viscous medium that is fed into a jetting nozzle for subsequent jetting of the viscous medium droplets therefrom. The exit velocity of the jetted droplets is adjusted or maintained substantially constant by regulating the velocity with which the viscous medium is impacted. Furthermore, the rate at which viscous medium is fed, for instance by a feed screw, into the nozzle is adjusted in order to regulate the feeding time required for feeding the viscous medium into the jetting nozzle, for instance in order to maintain a constant feeding time.Type: GrantFiled: June 23, 2003Date of Patent: August 3, 2010Assignee: Mydata Automation ABInventors: William Holm, Kenth Nilsson, Johan Berg, Johan Kronstedt, Håkan Sandell
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Patent number: 7757391Abstract: A method of applying viscous medium on a substrate that is arranged for mounting of components includes providing the substrate arranged for mounting of electronic components thereon and screen printing predetermined amounts of a viscous medium on predetermined positions on the substrate. In addition, the method includes add-on jetting of predetermined additional amounts of viscous medium on predetermined positions on the screen printed substrate. The add-on jetting is non-contact dispensing and the add-on jetting viscous medium is still in viscous form during the add-on jetting.Type: GrantFiled: July 11, 2001Date of Patent: July 20, 2010Assignee: Mydata Automation ABInventors: William Holm, Nils Jacobsson
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Patent number: 7648052Abstract: A viscous medium feeder, which has an inlet, an outlet, a tubular portion, a rotatable cylindrical shaft arranged in and extending coaxially with the tubular portion, and a drive motor connected to the shaft. The tubular portion has an internal thread, which is connected, at one end thereof, to the inlet, and, at the other end thereof, to the outlet. Further, the tubular portion is elastic, and the shaft abuts the inner wall portions of the tubular portion.Type: GrantFiled: December 12, 2002Date of Patent: January 19, 2010Assignee: Mydata Automation ABInventors: William Holm, Kenth Nilsson, Peter Svalling
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Publication number: 20090278875Abstract: The present invention is generally related to a jetting device for jetting droplets of viscous medium onto a substrate, said jetting device comprising an ejector element for performing the jetting process and a jetting outlet through which said droplets are jetted. In particular, the invention is related to a method, a measuring device, a jetting device, and a viscous medium container for use in such a jetting device for measuring or monitoring a level or volume of viscous medium during a jetting process and/or measuring electrical properties of the viscous medium to determine characteristics of the medium.Type: ApplicationFiled: November 14, 2006Publication date: November 12, 2009Applicant: MYDATA AUTOMATION ABInventors: William Holm, Håkan Sandell, Johan Kronstedt
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Publication number: 20090266906Abstract: A jetting apparatus (15) for jetting droplets of viscous medium onto a substrate and a method of improving the performance of the jetting apparatus. The jetting apparatus (15) includes a jetting outlet (27) through which the droplets are jetted, a flow generator for producing a flow of air past the jetting outlet for removing viscous medium residue at the jetting outlet (27), a receptacle (55) for receiving viscous medium residue transported by the air flow away from the jetting outlet (27), and a flow path (58) for the air flow between the jetting outlet (27) and the flow generator, via the receptacle. A flow sensor (70) is arranged in the flow path (58) for measuring the air flow. An air flow signal representative of the air flow is obtained, the air flow signal is evaluated for determining at least one status of the jetting apparatus (15), and an indication of the status is provided.Type: ApplicationFiled: November 14, 2006Publication date: October 29, 2009Inventors: William Holm, Hakan Sandell, Johan Kronstedt
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Patent number: 7600548Abstract: The invention relates to the screen printing of viscous medium onto a substrate and the subsequent application of additional viscous medium through jetting.Type: GrantFiled: August 11, 2006Date of Patent: October 13, 2009Assignee: Mydata Automation ABInventors: William Holm, Nils Jacobsson
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Patent number: 7401744Abstract: A jetting device and a method of jetting droplets of viscous medium onto a substrate. The jetting device includes a jetting outlet through which the droplets are jetted. The jetting device further includes a wall located at the jetting outlet, downstream of the jetting outlet seen in the jetting direction. The wall is provided with an orifice through which jetted droplets are permitted to pass through. A gaseous flow is provided within the space past the jetting outlet such that an adverse effect on the performance of the jetting device is prevented, the adverse effect resulting from the accumulation of viscous medium residue at the jetting outlet.Type: GrantFiled: April 25, 2002Date of Patent: July 22, 2008Assignee: Mydata Automation ABInventors: William Holm, Kenth Nilsson, Johan Kronstedt, Mårten Lundberg, Johan Berg, Mikael Bergman, Nicholas Glazer
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Publication number: 20070146404Abstract: A method for generating data for a jetting program, includes the steps of: a) obtaining substrate data for a substrate, which is to be provided with deposits and components; and b) for each component which is to be placed on the substrate:—fetching component data for the component from said substrate data; and—selecting a matching predefined deposit pattern, comprising at least one deposit, which matches a desired deposit pattern for said component data, wherein the deposit pattern comprises, for the/each deposit, deposit data comprising deposit extension and deposit position; or—if no matching predefined deposit pattern exists, defining a deposit pattern, comprising at least one deposit, for the component data, comprising the step of defining, for the/each deposit, deposit data, which step comprises determining deposit extension and deposit position.Type: ApplicationFiled: November 15, 2004Publication date: June 28, 2007Applicant: MYDATA AUTOMATION ABInventors: Jens Byléhn, Hakan Sandell, William Holm
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Publication number: 20070146442Abstract: System, jetting assembly and method for jetting viscous medium onto a substrate. The system comprises a plurality of ejector devices for jetting individual droplets of viscous medium onto the substrate, a plurality of viscous medium containers for holding and providing the viscous medium to be jetted, at least one holder for holding containers and ejector devices in a jetting machine, and a jetting machine.Type: ApplicationFiled: November 14, 2006Publication date: June 28, 2007Applicant: MYDATA AUTOMATION ABInventors: William Holm, Hakan Sandell, Johan Kronstedt
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Publication number: 20070137558Abstract: The invention relates to the screen printing of viscous medium onto a substrate and the subsequent application of additional viscous medium through jetting.Type: ApplicationFiled: August 11, 2006Publication date: June 21, 2007Inventors: William Holm, Nils Jacobsson
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Patent number: 7229145Abstract: A method improves the performance of a jetting assembly in an apparatus for jetting droplets of viscous medium on the fly onto a substrate. The jetting assembly is releasably mounted in the apparatus and includes a nozzle, an ejection mechanism connected to the nozzle, and a viscous medium container connected to the eject mechanism. Information relating to an XY-position and a Z-position is obtained together with information regarding the exit velocity a droplet of viscous medium has when it exits the nozzle. The information is used as a basis for adjusting a trigger position of the nozzle for the subsequent jetting of droplets. A jetting assembly also includes a storage device arranged to receive and hold calibration information of properties of the assembly obtained during calibration measurements.Type: GrantFiled: March 13, 2006Date of Patent: June 12, 2007Assignee: Mydata Automation ABInventors: William Holm, Mikael Kamfors, Magnus Fridsell
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Patent number: 7201802Abstract: Solder paste application, inspection and correction. Following or during application of solder paste on a substrate, the result thereof is inspected and any detected errors are registered. Following an evaluation as to whether correction of these errors is required and if it would be worthwhile, the errors are corrected. The correction involves removing solder paste from locations where so required, and jetting of additional solder paste to locations where so required.Type: GrantFiled: July 11, 2001Date of Patent: April 10, 2007Assignee: Mydata Automation ABInventors: William Holm, Nils Jacobsson
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Publication number: 20060275538Abstract: Solder paste application, inspection and correction. Following or during application of solder paste on a substrate, the result thereof is inspected and any detected errors are registered. Following an evaluation as to whether correction of these errors is required and if it would be worthwhile, the errors are corrected. The correction involves removing solder paste from locations where so required, and jetting of additional solder paste to locations where so required.Type: ApplicationFiled: August 14, 2006Publication date: December 7, 2006Inventors: William Holm, Nils Jacobsson
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Publication number: 20060176327Abstract: The invention relates to a method of improving the performance of a jetting assembly in an apparatus for jetting droplets of viscous medium on the fly onto a substrate. The jetting assembly is releasably mounted in the apparatus and comprises a nozzle, an ejection mechanism connected to the nozzle, and a viscous medium container connected to the eject mechanism. Information relating to an XY-position and a Z-position is obtained together with information regarding the exit velocity a droplet of viscous medium has when it exits the nozzle. The information is used as a basis for adjusting a trigger position of the nozzle for the subsequent jetting of droplets. The invention also concerns such a jetting assembly comprising storage means arranged to receive and hold calibration information of properties of the assembly obtained during calibration measurements.Type: ApplicationFiled: March 13, 2006Publication date: August 10, 2006Inventors: William Holm, Mikael Kamfors, Magnus Fridsell
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Patent number: 7011382Abstract: The invention relates to a method of improving the performance of a jetting assembly in an apparatus for jetting droplets of viscous medium on the fly onto a substrate. The jetting assembly is releasably mounted in the apparatus and includes a nozzle, an ejection mechanism connected to the nozzle, and a viscous medium container connect to the eject mechanism. Information relating to an XY-position and a Z-position is obtained together with information regarding the exit velocity a droplet of viscous medium has when it exits the nozzle. The information is used as a basis for adjusting a trigger position of the nozzle for the subsequent jetting of droplets. The invention also concerns such a jetting assembly including storage device arranged to receive and hold calibration information of properties of the assembly obtained during calibration measurements.Type: GrantFiled: October 9, 2001Date of Patent: March 14, 2006Assignee: Mydata Automation ABInventors: William Holm, Mikael Kamfors, Magnus Fridsell
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Publication number: 20050167519Abstract: A method and a system for jetting droplets of viscous medium, such as solder paste, onto a substrate, such as an electronic circuit board. The volume of the droplets are adjusted by regulating the amount of viscous medium that is fed into a jetting nozzle for subsequent jetting of the viscous medium droplets therefrom. The exit velocity of the jetted droplets is adjusted or maintained substantially constant by regulating the velocity with which the viscous medium is impacted. Furthermore, the rate at which viscous medium is fed, for instance by a feed screw, into the nozzle is adjusted in order to regulate the feeding time required for feeding the viscous medium into the jetting nozzle, for instance in order to maintain a constant feeding time.Type: ApplicationFiled: June 23, 2003Publication date: August 4, 2005Applicant: MYDATA AUTOMATION ABInventors: William Holm, Kenth Nilsson, Johan Berg, Johan Kronstedt, Hakan Sandell
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Publication number: 20050092774Abstract: This invention relates to a viscous medium feeder, which has an inlet, an outlet, a tubular portion, a routable cylindrical shaft arranged in and extending coaxial with said tubular portion, and a drive motor connected to the shaft. The tubular portion has an internal thread, which is connected, at one end thereof, to the inlet, and, at the other end thereof, to the outlet. Further, the tubular portion is elastic, and the shaft abuts inner wall portions of the tubular portion. The invention also relates to a feeder tube, and a jetting device.Type: ApplicationFiled: December 12, 2002Publication date: May 5, 2005Inventors: William Holm, Kenth Nilsson, Peter Svalling
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Publication number: 20040217193Abstract: A jetting device and a method of jetting droplets of viscous medium onto a substrate. The jetting device includes a jetting outlet through which the droplets are jetted. The jetting device further includes a wall located at the jetting outlet, downstream of the jetting outlet seen in the jetting direction. The wall is provided with an orifice through which jetted droplets are permitted to pass through. A gaseous flow is provided within the space past the jetting outlet such that an adverse effect on the performance of the jetting device is prevented, the adverse effect resulting from the accumulation of viscous medium residue at the jetting outlet.Type: ApplicationFiled: February 12, 2004Publication date: November 4, 2004Inventors: William Holm, Kenth Nilsson, Johan Kronstedt, Marten Lundberg, Johan Berg, Mikael Bergman, Nicholas Glazer
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Publication number: 20040118935Abstract: The invention relates to a method of improving the performance of a jetting assembly in an apparatus for jetting droplets of viscous medium on the fly onto a substrate. The jetting assembly is releasably mounted in the apparatus and comprises a nozzle, an ejection mechanism connected to the nozzle, and a viscous medium container connect to the eject mechanism. Information relating to an XY-position and a Z-position is obtained together with information regarding the exit velocity a droplet of viscous medium has when it exits the nozzle. The information is used as a basis for adjusting a trigger position of the nozzle for the subsequent jetting of droplets. The invention also concerns such a jetting assembly comprising storage means arranged to receive and hold calibration information of properties of the assembly obtained during calibration measurements.Type: ApplicationFiled: July 9, 2003Publication date: June 24, 2004Inventors: William Holm, Mikael Kamfors, Magnus Fridsell