Patents by Inventor Victor de Leeuw
Victor de Leeuw 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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Patent number: 9731486Abstract: A heat exchange device for heating liquid adhesive material to an application temperature suitable for an adhesive bonding application includes a body having an inlet configured to receive a flow of liquid adhesive material and an outlet configured to provide the liquid adhesive material to a dispensing device for the adhesive bonding application. A fluid passageway in the body connects the inlet and the outlet. The fluid passageway includes a thin slit section in the form of an elongated ring shape, having a length along a fluid flow direction between the inlet and the outlet, the thin slit section further having a first dimension and a second dimension transverse to the fluid flow direction. The first dimension and the length are substantially greater than the second dimension. The heat exchange device further includes a heating element for heating the liquid adhesive material flowing through the thin slit section.Type: GrantFiled: March 16, 2015Date of Patent: August 15, 2017Assignee: Nordson CorporationInventors: Steven Clark, Victor de Leeuw, Wesley C. Fort, Mark A. Gould, Leonard J. Lanier, Laurence B. Saidman, Alexander Wilhelm
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Publication number: 20150183202Abstract: A heat exchange device for heating liquid adhesive material to an application temperature suitable for an adhesive bonding application includes a body having an inlet configured to receive a flow of liquid adhesive material and an outlet configured to provide the liquid adhesive material to a dispensing device for the adhesive bonding application. A fluid passageway in the body connects the inlet and the outlet. The fluid passageway includes a thin slit section in the form of an elongated ring shape, having a length along a fluid flow direction between the inlet and the outlet, the thin slit section further having a first dimension and a second dimension transverse to the fluid flow direction. The first dimension and the length are substantially greater than the second dimension. The heat exchange device further includes a heating element for heating the liquid adhesive material flowing through the thin slit section.Type: ApplicationFiled: March 16, 2015Publication date: July 2, 2015Inventors: Steven Clark, Victor de Leeuw, Wesley C. Fort, Mark A. Gould, Leonard J. Lanier, Laurence B. Saidman, Alexander Wilhelm
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Patent number: 8070077Abstract: A method and an apparatus for dispensing liquid material to a substrate comprising a housing having a bore and an inlet for supplying liquid material from a material source to the bore. A nozzle communicates with the inlet and includes a discharge opening for dispensing the liquid material. A movable plunger is mounted for reciprocal movement between a closed and an open position. In the open position, liquid material is dispensed from the discharge opening and in the closed position, liquid material is prevented from being dispensed from the discharge opening. An actuator moves the plunger between the closed and the open position. The plunger has at least one slot extending from the outer periphery toward the center of the plunger.Type: GrantFiled: December 27, 2007Date of Patent: December 6, 2011Assignee: Nordson CorporationInventor: Victor de Leeuw
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Patent number: 7681588Abstract: Pressure regulator with partial volumes for regulating the operating pressure of fluids, in particular adhesives, at the inlet of a consuming device, the first partial volume (14) being connectable to a fluid source and the second partial volume (24) being connectable to the fluid inlet of the consuming device, wherein the second partial volume (24) has a cylindrical section(24a) of variable size, a connecting channel (22) connecting the first (14) and the second (24) partial volumes, a valve disposed in the first partial volume for opening and closing the connecting channel, said valve having an insert (23) and a movable sealing piston (32), the front end of which forms a sealing body (34) for closing the connecting channel and the rear end of which is sealed against the first partial volume.Type: GrantFiled: July 6, 2004Date of Patent: March 23, 2010Assignee: Nordson CorporationInventor: Victor De Leeuw
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Publication number: 20080179352Abstract: A method and an apparatus for dispensing liquid material to a substrate comprising a housing having a bore and an inlet for supplying liquid material from a material source to the bore. A nozzle communicates with the inlet and includes a discharge opening for dispensing the liquid material. A movable plunger is mounted for reciprocal movement between a closed and an open position. In the open position, liquid material is dispensed from the discharge opening and in the closed position, liquid material is prevented from being dispensed from the discharge opening. An actuator moves the plunger between the closed and the open position. The plunger has at least one slot extending from the outer periphery toward the center of the plunger.Type: ApplicationFiled: December 27, 2007Publication date: July 31, 2008Applicant: Nordson CorporationInventor: Victor De Leeuw
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Patent number: 7399361Abstract: An apparatus for applying fluid from a fluid source to a substrate. The apparatus comprises a housing configured to receive the fluid from the fluid source, a nozzle arrangement in fluid communication with the housing, and a lever pivotally mounted to the housing for releasably securing the nozzle arrangement thereto.Type: GrantFiled: April 26, 2005Date of Patent: July 15, 2008Assignee: Nordson CorporationInventors: Victor de Leeuw, Wendelinus Cornelis van der Heijden
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Publication number: 20070039651Abstract: Pressure regulator with partial volumes for regulating the operating pressure of fluids, in particular adhesives, at the inlet of a consuming device, the first partial volume (14) being connectable to a fluid source and the second partial volume (24) being connectable to the fluid inlet of the consuming device, wherein the second partial volume (24) has a cylindrical section(24a) of variable size, a connecting channel (22) connecting the first (14) and the second (24) partial volumes, a valve disposed in the first partial volume for opening and closing the connecting channel, said valve having an insert (23) and a movable sealing piston (32), the front end of which forms a sealing body (34) for closing the connecting channel and the rear end of which is sealed against the first partial volume.Type: ApplicationFiled: July 6, 2004Publication date: February 22, 2007Inventor: Victor De Leeuw
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Patent number: 6994234Abstract: Electrically-operated dispensing modules capable of dispensing small volumes of a viscous liquid at high operating frequencies and reproducibly among successive dispensed volumes of viscous liquid without the occurrence of stringing. The dispensing module may include a flux element having a portion effective for interrupting circumferential electrical current paths. In another aspect, an end face of a pole piece of the dispensing module may include one or more non-magnetic spacer elements that prevent contact between the pole piece and armature when the dispensing module is opened.Type: GrantFiled: April 3, 2003Date of Patent: February 7, 2006Assignee: Nordson CorporationInventor: Victor de Leeuw
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Publication number: 20050274317Abstract: An apparatus for applying fluid from a fluid source to a substrate. The apparatus comprises a housing configured to receive the fluid from the fluid source, a nozzle arrangement in fluid communication with the housing, and a lever pivotally mounted to the housing for releasably securing the nozzle arrangement thereto.Type: ApplicationFiled: April 26, 2005Publication date: December 15, 2005Inventors: Victor de Leeuw, Wendelinus van der Heijden
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Publication number: 20040195278Abstract: Electrically-operated dispensing modules capable of dispensing small volumes of a viscous liquid at high operating frequencies and reproducibly among successive dispensed volumes of viscous liquid without the occurrence of stringing. The dispensing module may include a flux element having a portion effective for interrupting circumferential electrical current paths. In another aspect, an end face of a pole piece of the dispensing module may include one or more non-magnetic spacer elements that prevent contact between the pole piece and armature when the dispensing module is opened.Type: ApplicationFiled: April 3, 2003Publication date: October 7, 2004Applicant: Nordson CorporationInventor: Victor de Leeuw
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Patent number: 6761290Abstract: The present invention pertains to a device for applying fluid material on a substrate. The device includes a valve body, a pole piece, and an electromagnetic drive unit that generates a magnetic field that moves the valve body relative to a pole piece between a closed position that interrupts the flow of material and an open position that releases the flow of material. The effect of the magnetic field provided by the drive unit is strengthened by the presence of a flux element. The flux element incorporates a portion, such as a slit, that eliminates circumferential electrical current paths, which allows the flux element to demagnetize more quickly when the drive unit is de-energized to remove the electromagnetic field. The rapid demagnetization decreases the cycle time for moving the valve body from the open position to the closed position.Type: GrantFiled: June 12, 2003Date of Patent: July 13, 2004Assignee: Nordson CorporationInventors: Hendrik-Jan Righolt, Victor de Leeuw
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Publication number: 20030205589Abstract: The present invention pertains to a device for applying fluid material on a substrate. The device includes a valve body, a pole piece, and an electromagnetic drive unit that generates a magnetic field that moves the valve body relative to a pole piece between a closed position that interrupts the flow of material and an open position that releases the flow of material. The effect of the magnetic field provided by the drive unit is strengthened by the presence of a flux element. The flux element incorporates a portion, such as a slit, that eliminates circumferential electrical current paths, which allows the flux element to demagnetize more quickly when the drive unit is de-energized to remove the electromagnetic field. The rapid demagnetization decreases the cycle time for moving the valve body from the open position to the closed position.Type: ApplicationFiled: June 12, 2003Publication date: November 6, 2003Applicant: Nordson CorporationInventors: Hendrik-Jan Righolt, Victor de Leeuw
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Patent number: D503729Type: GrantFiled: October 31, 2003Date of Patent: April 5, 2005Assignee: Nordson CorporationInventors: Victor de Leeuw, Gregory J. Gabryszewski
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Patent number: D519536Type: GrantFiled: October 12, 2004Date of Patent: April 25, 2006Assignee: Nordson CorporationInventors: Victor de Leeuw, Wendelinus Cornelis van der Heijden
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Patent number: D520538Type: GrantFiled: October 12, 2004Date of Patent: May 9, 2006Assignee: Nordson CorporationInventors: Victor de Leeuw, Wendelinus Cornelis van der Heijden
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Patent number: D521035Type: GrantFiled: October 12, 2004Date of Patent: May 16, 2006Assignee: Nordson CorporationInventors: Victor de Leeuw, Wendelinus Cornelis van der Heijden