Patents by Inventor Christopher P. Bertellotti
Christopher P. Bertellotti 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: 6913213Abstract: An electrostatic powder coating apparatus including a housing with an interior coating area for receiving a workpiece. The interior coating area includes a vortex inducing surface and a pressurized air input device directs air against the surface to form a swirling pattern of air around the workpiece. A powder introducer directs charged powder into the swirling pattern of air and the powder is then electrostatically attracted to the workpiece. The powder introducer may be a powder fluidizing bed disposed in the housing or other suppliers, such as electrostatic powder spray guns. In alternative embodiments, vortex generators in the form of tubular structures connected proximate the housing inlet and outlet have tangential ports for introducing positive pressure air or inducing vacuum in the tubular structures.Type: GrantFiled: April 22, 2004Date of Patent: July 5, 2005Assignee: Nordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari
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Patent number: 6827780Abstract: An apparatus for applying powder to at least an interior surface of a hollow object includes a powder discharge device adapted to receive powder and discharge the powder through an outlet. An object holder is configured to hold the object such that the outlet is positioned within the hollow object adjacent the interior surface. A rotating mechanism is configured to engage and rotate the hollow object such that the powder discharged from the outlet coats the interior surface as the interior surface rotates past the outlet. The powder discharge device may be a powder fluidizing bed unit including a chamber with a powder discharge opening in the form of an elongate slot.Type: GrantFiled: March 4, 2002Date of Patent: December 7, 2004Assignee: Nordson CorporationInventor: Christopher P. Bertellotti
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Publication number: 20040219301Abstract: An electrostatic powder coating apparatus including a housing with an interior coating area for receiving a workpiece. The interior coating area includes a vortex inducing surface and a pressurized air input device directs air against the surface to form a swirling pattern of air around the workpiece. A powder introducer directs charged powder into the swirling pattern of air and the powder is then electrostatically attracted to the workpiece. The powder introducer may be a powder fluidizing bed disposed in the housing or other suppliers, such as electrostatic powder spray guns. In alternative embodiments, vortex generators in the form of tubular structures connected proximate the housing inlet and outlet have tangential ports for introducing positive pressure air or inducing vacuum in the tubular structures.Type: ApplicationFiled: April 22, 2004Publication date: November 4, 2004Applicant: Nordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari
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Patent number: 6759095Abstract: A method of powder coating a workpiece in a housing having a powder coating area with a workpiece travel path and an interior wall surface sloped around at least a portion of the workpiece travel path includes moving air and powder in the powder coating area along at least a portion of the sloped interior wall surface. As a result, a swirling flow pattern of the air and powder is produced around at least a portion of the workpiece travel path. The workpiece is conveyed along the workpiece travel path, and powder is deposited from the swirling flow pattern onto the workpiece along the portion of the workpiece travel path around which the interior wall slopes.Type: GrantFiled: May 7, 2003Date of Patent: July 6, 2004Assignee: Nordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari
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Publication number: 20030203121Abstract: An electrostatic powder coating apparatus including a housing with an interior coating area for receiving a workpiece. The interior coating area includes a vortex inducing surface and a pressurized air input device directs air against the surface to form a swirling pattern of air around the workpiece. A powder introducer directs charged powder into the swirling pattern of air and the powder is then electrostatically attracted to the workpiece. The powder introducer may be a powder fluidizing bed disposed in the housing or other suppliers, such as electrostatic powder spray guns. In alternative embodiments, vortex generators in the form of tubular structures connected proximate the housing inlet and outlet have tangential ports for introducing positive pressure air or inducing vacuum in the tubular structures.Type: ApplicationFiled: May 7, 2003Publication date: October 30, 2003Applicant: Nordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari
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Patent number: 6620243Abstract: An electrostatic fluidized bed powder coating apparatus including powder coating structure, such as a coating enclosure, hood or booth, and a powder fluidizing bed operatively associated with an electrostatic charging device. An enclosed powder accumulator is provided for collecting excess powder from the powder coating structure. A vacuum pump communicates between the powder coating structure and the powder accumulator and is operable by a source of compressed air for forming and controlling a cloud of powder emanating from the fluidizing bed and for transferring excess powder from the powder coating structure to the powder accumulator. In the preferred embodiment, the accumulator includes a cyclone housing. A powder reclaim feeder is disposed below and in communication with the cyclone housing and further communicates with a new powder feeder.Type: GrantFiled: May 29, 1998Date of Patent: September 16, 2003Assignee: Nordson CorporationInventors: Christopher P. Bertellotti, Colin Drummond, Mark Heckler, Joseph Rogari, Don Urig
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Patent number: 6582521Abstract: An electrostatic powder coating apparatus including a housing with an interior coating area for receiving a workpiece. The interior coating area includes a vortex inducing surface and a pressurized air input device directs air against the surface to form a swirling pattern of air around the workpiece. A powder introducer directs charged powder into the swirling pattern of air and the powder is then electrostatically attracted to the workpiece. The powder introducer may be a powder fluidizing bed disposed in the housing or other suppliers, such as electrostatic powder spray guns. In alternative embodiments, vortex generators in the form of tubular structures connected proximate the housing inlet and outlet have tangential ports for introducing positive pressure air or inducing vacuum in the tubular structures.Type: GrantFiled: August 19, 2002Date of Patent: June 24, 2003Assignee: Nordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari
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Publication number: 20030059529Abstract: An electrostatic powder coating apparatus including a housing with an interior coating area for receiving a workpiece. The interior coating area includes a vortex inducing surface and a pressurized air input device directs air against the surface to form a swirling pattern of air around the workpiece. A powder introducer directs charged powder into the swirling pattern of air and the powder is then electrostatically attracted to the workpiece. The powder introducer may be a powder fluidizing bed disposed in the housing or other suppliers, such as electrostatic powder spray guns. In alternative embodiments, vortex generators in the form of tubular structures connected proximate the housing inlet and outlet have tangential ports for introducing positive pressure air or inducing vacuum in the tubular structures.Type: ApplicationFiled: August 19, 2002Publication date: March 27, 2003Applicant: Nordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari
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Patent number: 6458427Abstract: An electrostatic powder coating apparatus including a housing with an interior coating area for receiving a workpiece. The interior coating area includes a vortex inducing surface and a pressurized air input device directs air against the surface to form a swirling pattern of air around the workpiece. A powder introducer directs charged powder into the swirling pattern of air and the powder is then electrostatically attracted to the workpiece. The powder introducer may be a powder fluidizing bed disposed in the housing or other suppliers, such as electrostatic powder spray guns. In alternative embodiments, vortex generators in the form of tubular structures connected proximate the housing inlet and outlet have tangential ports for introducing positive pressure air or inducing vacuum in the tubular structures.Type: GrantFiled: March 9, 2001Date of Patent: October 1, 2002Assignee: Nordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari
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Publication number: 20020127332Abstract: An apparatus for applying powder to at least an interior surface of a hollow object includes a powder discharge device adapted to receive powder and discharge the powder through an outlet. An object holder is configured to hold the object such that the outlet is positioned within the hollow object adjacent the interior surface. A rotating mechanism is configured to engage and rotate the hollow object such that the powder discharged from the outlet coats the interior surface as the interior surface rotates past the outlet. The powder discharge device may be a powder fluidizing bed unit including a chamber with a powder discharge opening in the form of an elongate slot.Type: ApplicationFiled: March 4, 2002Publication date: September 12, 2002Applicant: Nordson CorporationInventor: Christopher P. Bertellotti
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Publication number: 20010009137Abstract: An electrostatic powder coating apparatus including a housing with an interior coating area for receiving a workpiece. The interior coating area includes a vortex inducing surface and a pressurized air input device directs air against the surface to form a swirling pattern of air around the workpiece. A powder introducer directs charged powder into the swirling pattern of air and the powder is then electrostatically attracted to the workpiece. The powder introducer may be a powder fluidizing bed disposed in the housing or other suppliers, such as electrostatic powder spray guns. In alternative embodiments, vortex generators in the form of tubular structures connected proximate the housing inlet and outlet have tangential ports for introducing positive pressure air or inducing vacuum in the tubular structures.Type: ApplicationFiled: March 9, 2001Publication date: July 26, 2001Applicant: Nordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari
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Patent number: 6240873Abstract: An electrostatic powder coating apparatus including a housing with an interior coating area for receiving a workpiece. The interior coating area includes a vortex inducing surface and a pressurized air input device directs air against the surface to form a swirling pattern of air around the workpiece. A powder introducer directs charged powder into the swirling pattern of air and the powder is then electrostatically attracted to the workpiece. The powder introducer may be a powder fluidizing bed disposed in the housing or other suppliers, such as electrostatic powder spray guns. In alternative embodiments, vortex generators in the form of tubular structures connected proximate the housing inlet and outlet have tangential ports for introducing positive pressure air or inducing vacuum in the tubular structures.Type: GrantFiled: November 20, 1998Date of Patent: June 5, 2001Assignee: Wordson CorporationInventors: Christopher P. Bertellotti, Joseph Rogari