Patents by Inventor Robert F. Heldt
Robert F. Heldt 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: 9050614Abstract: A paint delivery and application apparatus, wherein the apparatus includes a source of paint, a paint applicator, a supply line interconnecting the source of paint and the applicator and at least one pig in the supply line, wherein the paint pushes the pig from adjacent the source of paint to the paint applicator and a source of purging solvent delivering a small volume of purging solvent to the supply line when the pig is adjacent the source of paint adjacent to and upstream of the pig acting as a lubricant, reducing chattering and skipping of the pig and extending the life of the pig. Where the apparatus includes two pigs, purging solvent is delivered between the pigs adjacent the applicator, the pigs are delivered to adjacent the source of paint and a small volume of solvent is then delivered from between the pigs upstream of the pigs.Type: GrantFiled: July 16, 2014Date of Patent: June 9, 2015Assignee: Durr Systems, Inc.Inventors: Robert F. Heldt, Rainer Melcher, Manfred Michelfelder, Robert E. Brady
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Publication number: 20140326800Abstract: A paint delivery and application apparatus, wherein the apparatus includes a source of paint, a paint applicator, a supply line interconnecting the source of paint and the applicator and at least one pig in the supply line, wherein the paint pushes the pig from adjacent the source of paint to the paint applicator and a source of purging solvent delivering a small volume of purging solvent to the supply line when the pig is adjacent the source of paint adjacent to and upstream of the pig acting as a lubricant, reducing chattering and skipping of the pig and extending the life of the pig. Where the apparatus includes two pigs, purging solvent is delivered between the pigs adjacent the applicator, the pigs are delivered to adjacent the source of paint and a small volume of solvent is then delivered from between the pigs upstream of the pigs.Type: ApplicationFiled: July 16, 2014Publication date: November 6, 2014Inventors: Robert F. Heldt, Rainer Melcher, Manfred Michelfelder, Robert E. Brady
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Patent number: 8783302Abstract: A paint delivery and application apparatus, wherein the apparatus includes a source of paint, a paint applicator, a supply line interconnecting the source of paint and the applicator and at least one pig in the supply line, wherein the paint pushes the pig from adjacent the source of paint to the paint applicator and a source of purging solvent delivering a small volume of purging solvent to the supply line when the pig is adjacent the source of paint adjacent to and upstream of the pig acting as a lubricant, reducing chattering and skipping of the pig and extending the life of the pig. Where the apparatus includes two pigs, purging solvent is delivered between the pigs adjacent the applicator, the pigs are delivered to adjacent the source of paint and a small volume of solvent is then delivered from between the pigs upstream of the pigs.Type: GrantFiled: August 13, 2010Date of Patent: July 22, 2014Assignee: Dürr Systems Inc.Inventors: Robert F. Heldt, Rainer Melcher, Manfred Michelfelder, Robert E. Brady
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Publication number: 20120160931Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.Type: ApplicationFiled: March 7, 2012Publication date: June 28, 2012Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
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Patent number: 8141797Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.Type: GrantFiled: February 22, 2006Date of Patent: March 27, 2012Assignee: Durr Systems Inc.Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
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Publication number: 20120037716Abstract: A paint delivery and application apparatus, wherein the apparatus includes a source of paint, a paint applicator, a supply line interconnecting the source of paint and the applicator and at least one pig in the supply line, wherein the paint pushes the pig from adjacent the source of paint to the paint applicator and a source of purging solvent delivering a small volume of purging solvent to the supply line when the pig is adjacent the source of paint adjacent to and upstream of the pig acting as a lubricant, reducing chattering and skipping of the pig and extending the life of the pig. Where the apparatus includes two pigs, purging solvent is delivered between the pigs adjacent the applicator, the pigs are delivered to adjacent the source of paint and a small volume of solvent is then delivered from between the pigs upstream of the pigs.Type: ApplicationFiled: August 13, 2010Publication date: February 16, 2012Applicant: DURR SYSTEMS, INC.Inventors: Robert F. Heldt, Rainer Melcher, Manfred Michelfelder, Robert E. Brady
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Patent number: 8020784Abstract: A coating material supply device is disclosed, such as for a paint facility. An exemplary coating material supply device may include a coating material reservoir and a coating material meter. During application of coating material, the coating material reservoir may be at ground potential and may be located upstream from the coating material meter, which may be at a high-voltage potential. The reservoir may be connected via an insulating path to the coating material meter. The coating material meter may be at ground potential when the coating material reservoir supplies coating material to the coating material meter. Before the coating material meter is returned to a high-voltage potential for continued application of coating material, the insulating path may be emptied to insulate the coating material meter from the coating material reservoir.Type: GrantFiled: October 6, 2006Date of Patent: September 20, 2011Assignee: Durr Systems Inc.Inventors: Michael Baumann, Frank Herre, Herbert Martin, Rainer Melcher, Manfred Michelfelder, Bernhard Seiz, Richard Ostin, Robert F. Heldt
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Patent number: 7793858Abstract: A paint delivery and application apparatus, wherein the apparatus includes a source of paint, a paint applicator, a supply line interconnecting the source of paint and the applicator and at least one pig in the supply line, wherein the paint pushes the pig from adjacent the source of paint to the paint applicator and a source of purging solvent delivering a small volume of purging solvent to the supply line when the pig is adjacent the source of paint adjacent to and upstream of the pig acting as a lubricant, reducing chattering and skipping of the pig and extending the life of the pig. Where the apparatus includes two pigs, purging solvent is delivered between the pigs adjacent the applicator, the pigs are delivered to adjacent the source of paint and a small volume of solvent is then delivered from between the pigs upstream of the pigs.Type: GrantFiled: January 10, 2005Date of Patent: September 14, 2010Assignee: Durr Systems, Inc.Inventors: Robert F. Heldt, Rainer Melcher, Manfred Michelfelder, Robert E. Brady
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Patent number: 7584771Abstract: The disclosed apparatus includes a supply line (22) between a source of liquid paint (64) and an applicator (62) having at least two pigs (20A and 20B) and a source of liquid solvent (60) which delivers solvent (60) between the two pigs (20A and 20B) and the pigs (20A and 20B) are driven by paint (80) from adjacent the paint source (64) to the applicator (62). The apparatus further includes a second source of liquid solvent (60) which delivers solvent (60) between the pigs (20A and 20B) adjacent the applicator (62) and the pigs (20A and 20B) are returned through the supply line (22), thereby flushing the supply line (22). In the disclosed embodiment, the source of liquid paint (64) is a piston dosing device (70) which receives paint (80) from a color changer or the like and delivers a predetermined volume of paint (80) to the applicator (62). The delivery line (22) preferably includes a friction resistant inner layer, an intermediate dielectric layer and a protective outer layer.Type: GrantFiled: May 6, 2003Date of Patent: September 8, 2009Assignee: Durr Systems, Inc.Inventors: Frank Herre, Rainer Melcher, Herbert Martin, Michael Baumann, Richard M. Ostin, Robert F. Heldt, Manfred Michelfelder, Joachim Hering
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Patent number: 7549449Abstract: A paint delivery and application system including a color changer, at least two paint canisters and a paint applicator, a first pair of supply lines connected between the color changer and the paint canisters and a second pair of supply lines connecting the paint canisters and the paint applicator, wherein the paint canisters operate in tandem permitting delivery of a first paint to one of the paint canisters while a second paint canister is electrically isolated from the color changer and is delivering paint to the applicator. In one disclosed embodiment, the delivery line from the paint canisters to the applicator includes two pigs and solvent is delivered between the pigs, such that this system is self purging.Type: GrantFiled: May 6, 2003Date of Patent: June 23, 2009Assignee: Durr Systems, Inc.Inventors: Frank Herre, Rainer Melcher, Herbert Martin, Michael Baumann, Manfred Michelfelder, Richard M. Ostin, Robert F. Heldt, Joachim Hering, Hans Jurgen Nolte
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Patent number: 7017835Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.Type: GrantFiled: June 26, 2003Date of Patent: March 28, 2006Assignee: Durr Systems, Inc.Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
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Patent number: 6708908Abstract: An ionizing device generates ionizing lines to shape solvent borne coating material being dispersed from an electrostatic rotary atomizer. A band having a clamping element affixes the device to the electrostatic rotary atomizer. A halo is affixed to the band by at least one support arm. The halo includes a plurality of generally conical members spaced therearound, each generating ionic lines to shape the atomized coating material being dispersed from the rotary atomizer. A shroud is positioned around each of the generally conical members to shape the ionizing lines being generated to form an ionic field to improve the transfer efficiency of the electrostatic rotary atomizer.Type: GrantFiled: June 29, 2001Date of Patent: March 23, 2004Assignee: Behr Systems, Inc.Inventors: Robert F. Heldt, Thomas Loch, Jacob J. Braslaw, Michael P. Gibbons, Charles K. Altermatt
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Publication number: 20040000604Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.Type: ApplicationFiled: June 26, 2003Publication date: January 1, 2004Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
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Patent number: 6623561Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.Type: GrantFiled: January 25, 2001Date of Patent: September 23, 2003Assignee: Behr Systems, Inc.Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
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Publication number: 20030001031Abstract: An ionizing device generates ionizing lines to shape solvent borne coating material being dispersed from an electrostatic rotary atomizer. A band having a clamping element affixes the device to the electrostatic rotary atomizer. A halo is affixed to the band by at least one support arm. The halo includes a plurality of generally conical members spaced therearound, each generating ionic lines to shape the atomized coating material being dispersed from the rotary atomizer. A shroud is positioned around each of the generally conical members to shape the ionizing lines being generated to form an ionic field to improve the transfer efficiency of the electrostatic rotary atomizer.Type: ApplicationFiled: June 29, 2001Publication date: January 2, 2003Inventors: Robert F. Heldt, Thomas Loch, Jacob J. Braslaw, Michael P. Gibbons, Charles K. Altermatt
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Patent number: 6360962Abstract: A rotary bell cup for atomizing particulate material such as paint includes a generally conical overflow surface having a generally constant flow angle defining a radially inward central axial opening and a radially outward atomizing edge with a bevel. A central flat portion is disposed between the conical overflow surface and the radially inward central axial opening. A deflector having a deflection surface of generally rotational symmetry is disposed in front of the central opening having a rear flat surface generally parallel to the central portion and a rear conical surface generally parallel to the conical overflow surface.Type: GrantFiled: January 25, 2001Date of Patent: March 26, 2002Assignee: Behr Systems, Inc.Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
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Publication number: 20010015384Abstract: A rotary bell cup for atomizing particulate material such as paint includes a generally conical overflow surface having a generally constant flow angle defining a radially inward central axial opening and a radially outward atomizing edge with a bevel. A central flat portion is disposed between the conical overflow surface and the radially inward central axial opening. A deflector having a deflection surface of generally rotational symmetry is disposed in front of the central opening having a rear flat surface generally parallel to the central portion and a rear conical surface generally parallel to the conical overflow surface.Type: ApplicationFiled: January 25, 2001Publication date: August 23, 2001Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
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Publication number: 20010001946Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.Type: ApplicationFiled: January 25, 2001Publication date: May 31, 2001Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt
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Patent number: 6189804Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.Type: GrantFiled: March 17, 1999Date of Patent: February 20, 2001Assignee: Behr Systems, Inc.Inventors: Kurt Vetter, Rolf Schneider, Andreas Fischer, Robert F. Heldt