Patents by Inventor Joseph G. Schroeder
Joseph G. Schroeder 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: 11543038Abstract: A dense phase pump has two housings that are attached together using a single releasable fastener. The fastener can be released to allow the two housings to be separated thereby providing access to replaceable components. The replaceable components may include one or more pinch valves or one or more barrier elements. A pinch valve for a dense phase pump has a shape or profile for aligning the pinch valve when the pinch valve is installed in a pinch valve body. The pinch valve optionally has two end flanges, with each end flange having a shaped periphery. The two end flanges may have the same size and shape so that the pinch valve can be installed in either of two orientations that are inverse. A dense phase pump has a pump chamber that can be purged by purge gas that enters the pump off-axis from a purge path axis.Type: GrantFiled: March 22, 2021Date of Patent: January 3, 2023Assignee: Nordson CorporationInventors: Terrence M. Fulkerson, Benjamin J. Becker, Donna Campbell, Nicholas Klasovsky, Joseph G. Schroeder
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Publication number: 20210207721Abstract: A dense phase pump has two housings that are attached together using a single releasable fastener. The fastener can be released to allow the two housings to be separated thereby providing access to replaceable components. The replaceable components may include one or more pinch valves or one or more barrier elements. A pinch valve for a dense phase pump has a shape or profile for aligning the pinch valve when the pinch valve is installed in a pinch valve body. The pinch valve optionally has two end flanges, with each end flange having a shaped periphery. The two end flanges may have the same size and shape so that the pinch valve can be installed in either of two orientations that are inverse. A dense phase pump has a pump chamber that can be purged by purge gas that enters the pump off-axis from a purge path axis.Type: ApplicationFiled: March 22, 2021Publication date: July 8, 2021Inventors: Terrence M. Fulkerson, Benjamin J. Becker, Donna Campbell, Nicholas Klasovsky, Joseph G. Schroeder
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Patent number: 10989316Abstract: A dense phase pump has two housings that are attached together using a single releasable fastener. The fastener can be released to allow the two housings to be separated thereby providing access to replaceable components. The replaceable components may include one or more pinch valves or one or more barrier elements. A pinch valve for a dense phase pump has a shape or profile for aligning the pinch valve when the pinch valve is installed in a pinch valve body. The pinch valve optionally has two end flanges, with each end flange having a shaped periphery. The two end flanges may have the same size and shape so that the pinch valve can be installed in either of two orientations that are inverse. A dense phase pump has a pump chamber that can be purged by purge gas that enters the pump off-axis from a purge path axis.Type: GrantFiled: May 10, 2016Date of Patent: April 27, 2021Assignee: Nordson CorporationInventors: Terrence M. Fulkerson, Benjamin J. Becker, Donna Campbell, Nicholas Klasovsky, Joseph G. Schroeder
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Patent number: 10058884Abstract: A color changer has a common feed passage that is connected to two or more inlet passages. The common feed passage can be reverse purged in a direction that is opposite a direction of powder flow through the common feed passage. A valve element seals a supply port that connects the inlet passage to the common feed passage to eliminate dead space and form a near bore line seal. The valve element is an elastic material that expands in response to applied compressed air inside the valve element.Type: GrantFiled: May 27, 2015Date of Patent: August 28, 2018Assignee: Nordson CorporationInventors: Terrence M. Fulkerson, Terry John Thompson, Jeffery Edward Dailidas, Kenneth A. Keeger, Joseph G. Schroeder
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Publication number: 20170361350Abstract: A particulate spray booth having a sealed particulate spray device booth wall opening is disclosed. The powder coating material spray system may include a booth comprising a ceiling, a floor, and side walls defining an interior of the booth, wherein the booth defines an opening from the interior of the booth to an exterior of the booth. The system may further include a powder spray device received through the opening, the powder spray device comprising a body and a nozzle through which powder coating material is sprayed into the interior of the booth, wherein the nozzle and at least part of the body are disposed in the interior of the booth. The system may further include a flexible boot element having a proximal end and a distal end opposite the proximal end, the proximal end attached to a periphery of the opening to form a first seal and the distal end attached to the at least part of the body of the powder spray device disposed in the interior of the booth to form a second seal.Type: ApplicationFiled: June 16, 2016Publication date: December 21, 2017Inventors: Jeffery E. Dailidas, Greg Dawson, Joseph G. Schroeder, Douglas C. Bloomfield
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Publication number: 20160252184Abstract: A dense phase pump has two housings that are attached together using a single releasable fastener. The fastener can be released to allow the two housings to be separated thereby providing access to replaceable components. The replaceable components may include one or more pinch valves or one or more barrier elements. A pinch valve for a dense phase pump has a shape or profile for aligning the pinch valve when the pinch valve is installed in a pinch valve body. The pinch valve optionally has two end flanges, with each end flange having a shaped periphery. The two end flanges may have the same size and shape so that the pinch valve can be installed in either of two orientations that are inverse. A dense phase pump has a pump chamber that can be purged by purge gas that enters the pump off-axis from a purge path axis.Type: ApplicationFiled: May 10, 2016Publication date: September 1, 2016Inventors: Terrence M. Fulkerson, Benjamin J. Becker, Donna Campbell, Nicholas Klasovsky, Joseph G. Schroeder
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Patent number: 9372108Abstract: Apparatus for detecting powder flow along a powder flow path includes a light source and a light detector for detecting light from the light source directed across the powder flow path as powder flows through said powder flow path. A circuit receives the output from the light detector and determines an average or RMS of the signal received by the light detector. The circuit may determine whether there is flow or no flow of powder or whether there is a change in flow rate of powder. Preferably, the apparatus is used in combination with a dense phase powder pump, which causes the powder to flow in pulses from the pump outlet into the powder flow path. More preferably, the light source and detector are enclosed in a housing that is connected between the pump outlet and a powder feed hose which supplies powder to a spray gun or hopper.Type: GrantFiled: May 13, 2014Date of Patent: June 21, 2016Assignee: Nordson CorporationInventors: Mario Romanin, James M. Khoury, Joseph G. Schroeder, Jeffrey A. Perkins, Terrence M. Fulkerson
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Patent number: 9221069Abstract: A powder spray for lengthy parts includes a booth wall structure comprised primarily of doors. A moveable roof may be raised and lowered to clean powder overspray from the interior surfaces of the booth. A cleaning process may be performed with a sideways extraction mode and a downward extraction mode. The mode change occurs when a bulkhead that travels with the moveable roof blocks the inlet duct to the recovery system. The recovery system may be a cyclone system for example. The doors of the booth are hinged so that they can be positioned for spraying operations and cleaning operations. Live hinge designs are provided and hose stress relief designs are also provided. The roof may carry accumulators for pressurized air that feed cleaning nozzles as the roof descends. In addition, exhaust air may be used to assist cleaning the interior surfaces as the roof descends. All of the energy provided for cleaning and color change may be provided by accumulators.Type: GrantFiled: March 3, 2014Date of Patent: December 29, 2015Assignee: Nordson CorporationInventors: Jeffrey R. Shutic, Joseph G. Schroeder, Jeffrey E. Dailidas, Kenneth Kreeger
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Publication number: 20150273507Abstract: A color changer has a common feed passage that is connected to two or more inlet passages. The common feed passage can be reverse purged in a direction that is opposite a direction of powder flow through the common feed passage. A valve element seals a supply port that connects the inlet passage to the common feed passage to eliminate dead space and form a near bore line seal. The valve element is an elastic material that expands in response to applied compressed air inside the valve element.Type: ApplicationFiled: May 27, 2015Publication date: October 1, 2015Inventors: Terrence M. Fulkerson, Terry John Thompson, Jeffery Edward Dailidas, Kenneth A. Keeger, Joseph G. Schroeder
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Patent number: 9067223Abstract: A color changer has a common feed passage that is connected to two or more inlet passages. The common feed passage can be reverse purged in a direction that is opposite a direction of powder flow through the common feed passage. A valve element seals a supply port that connects the inlet passage to the common feed passage to eliminate dead space and form a near bore line seal. The valve element is an elastic material that expands in response to applied compressed air inside the valve element.Type: GrantFiled: January 18, 2012Date of Patent: June 30, 2015Assignee: Nordson CorporationInventors: Terrence M. Fulkerson, Terry John Thompson, Jeffery Edward Dailidas, Kenneth A. Kreeger, Joseph G. Schroeder
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Publication number: 20140261739Abstract: A dense phase pump has two housings that are attached together using a single releasable fastener. The fastener can be released to allow the two housings to be separated thereby providing access to replaceable components. The replaceable components may include one or more pinch valves or one or more barrier elements. A pinch valve for a dense phase pump has a shape or profile for aligning the pinch valve when the pinch valve is installed in a pinch valve body. The pinch valve optionally has two end flanges, with each end flange having a shaped periphery. The two end flanges may have the same size and shape so that the pinch valve can be installed in either of two orientations that are inverse. A dense phase pump has a pump chamber that can be purged by purge gas that enters the pump off-axis from a purge path axis.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: Nordson CorporationInventors: Terrence M. Fulkerson, Benjamin J. Becker, Donna Campbell, Nicholas Klasovsky, Joseph G. Schroeder
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Patent number: 8827191Abstract: A nozzle assembly for a material application device includes an expansion chamber for slowing down the velocity of powder fed to the nozzle from a dense phase pump. The nozzle assembly includes a nozzle insert that forms the expansion chamber and provides air assist function. The nozzle includes an integral deflector, and further includes a passageway for a charging electrode so that the electrical path is routed away from the powder path, while permitting the electrode tip to be centered in the powder spray pattern from the nozzle. The nozzle also includes air wash for the electrode. The nozzle outlet orifice has a cross-sectional area that is equal to or greater than the inlet cross-sectional area so that a slow moving dense phase powder cloud is produced by the nozzle.Type: GrantFiled: January 25, 2011Date of Patent: September 9, 2014Assignee: Nordson CorporationInventors: Brian D. Mather, James V. Bachman, Joseph G. Schroeder, Terrence M. Fulkerson, Herman E. Turner
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Publication number: 20140248437Abstract: A powder hopper is provided with a low turbulence zone for supplying powder to a spray gun. The low turbulence zone is defined by a baffle inside the hopper with the low turbulence zone being within a volume of the baffle, and an annular zone between the baffle and the hopper is used to bulk feed powder into the hopper. The low turbulence zone may alternatively be in the annular zone with powder added to the volume of the baffle. One preferred application for this hopper is in connection with the use of fine powder coating materials to coat the interior of small diameter cans.Type: ApplicationFiled: May 13, 2014Publication date: September 4, 2014Applicant: Nordson CorporationInventors: Joseph G. Schroeder, Terrence M. Fulkerson, Angelo Bellini, Ralf Scheuffgen, Claus Ruschitzka
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Publication number: 20140245839Abstract: Apparatus for detecting powder flow along a powder flow path includes a light source and a light detector for detecting light from the light source directed across the powder flow path as powder flows through said powder flow path. A circuit receives the output from the light detector and determines an average or RMS of the signal received by the light detector. The circuit may determine whether there is flow or no flow of powder or whether there is a change in flow rate of powder. Preferably, the apparatus is used in combination with a dense phase powder pump, which causes the powder to flow in pulses from the pump outlet into the powder flow path. More preferably, the light source and detector are enclosed in a housing that is connected between the pump outlet and a powder feed hose which supplies powder to a spray gun or hopper.Type: ApplicationFiled: May 13, 2014Publication date: September 4, 2014Applicant: Nordson CorporationInventors: Mario Romanin, James M. Khoury, Joseph G. Schroeder, Jeffrey A. Perkins, Terrrence M. Fulkerson
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Patent number: 8807464Abstract: A nozzle assembly for a material application device includes an expansion chamber for slowing down the velocity of powder fed to the nozzle from a dense phase pump. The nozzle assembly includes a nozzle insert that forms the expansion chamber and provides air assist function. The nozzle includes an integral deflector, and further includes a passageway for a charging electrode so that the electrical path is routed away from the powder path, while permitting the electrode tip to be centered in the powder spray pattern from the nozzle. The nozzle also includes air wash for the electrode. The nozzle outlet orifice has a cross-sectional area that is equal to or greater than the inlet cross-sectional area so that a slow moving dense phase powder cloud is produced by the nozzle.Type: GrantFiled: August 4, 2010Date of Patent: August 19, 2014Assignee: Nordson CorporationInventors: Brian D. Mather, James V. Bachman, Joseph G. Schroeder, Terrence M. Fulkerson, Herman E. Turner
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Patent number: 8783208Abstract: A powder hopper is provided with a low turbulence zone for supplying powder to a spray gun. The low turbulence zone is defined by a baffle inside the hopper with the low turbulence zone being within a volume of the baffle, and an annular zone between the baffle and the hopper is used to bulk feed powder into the hopper. The low turbulence zone may alternatively be in the annular zone with powder added to the volume of the baffle. One preferred application for this hopper is in connection with the use of fine powder coating materials to coat the interior of small diameter cans.Type: GrantFiled: December 16, 2009Date of Patent: July 22, 2014Assignee: Nordson CorporationInventors: Joseph G. Schroeder, Terrence M. Fulkerson, Angelo Bellini, Ralf Scheuffgen, Claus Ruschitzka
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Patent number: 8767214Abstract: Apparatus for detecting powder flow along a powder flow path includes a light source and a light detector for detecting light from the light source directed across the powder flow path as powder flows through said powder flow path. A circuit receives the output from the light detector and determines an average or RMS of the signal received by the light detector. The circuit may determine whether there is flow or no flow of powder or whether there is a change in flow rate of powder. Preferably, the apparatus is used in combination with a dense phase powder pump, which causes the powder to flow in pulses from the pump outlet into the powder flow path. More preferably, the light source and detector are enclosed in a housing that is connected between the pump outlet and a powder feed hose which supplies powder to a spray gun or hopper.Type: GrantFiled: October 6, 2011Date of Patent: July 1, 2014Assignee: Nordson CorporationInventors: Mario Romanin, James M. Khoury, Joseph G. Schroeder, Jeffrey A. Perkins, Terrence M. Fulkerson
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Publication number: 20140174346Abstract: A powder spray for lengthy parts includes a booth wall structure comprised primarily of doors. A moveable roof may be raised and lowered to clean powder overspray from the interior surfaces of the booth. A cleaning process may be performed with a sideways extraction mode and a downward extraction mode. The mode change occurs when a bulkhead that travels with the moveable roof blocks the inlet duct to the recovery system. The recovery system may be a cyclone system for example. The doors of the booth are hinged so that they can be positioned for spraying operations and cleaning operations. Live hinge designs are provided and hose stress relief designs are also provided. The roof may carry accumulators for pressurized air that feed cleaning nozzles as the roof descends. In addition, exhaust air may be used to assist cleaning the interior surfaces as the roof descends. All of the energy provided for cleaning and color change may be provided by accumulators.Type: ApplicationFiled: March 3, 2014Publication date: June 26, 2014Applicant: Nordson CorporationInventors: Jeffrey R. Shutic, Joseph G. Schroeder, Jeffery E. Dailidas, Kenneth Kreeger
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Patent number: 8714101Abstract: A powder spray for lengthy parts includes a booth wall structure comprised primarily of doors. A moveable roof may be raised and lowered to clean powder overspray from the interior surfaces of the booth. A cleaning process may be performed with a sideways extraction mode and a downward extraction mode. The mode change occurs when a bulkhead that travels with the moveable roof blocks the inlet duct to the recovery system. The recovery system may be a cyclone system for example. The doors of the booth are hinged so that they can be positioned for spraying operations and cleaning operations. Live hinge designs are provided and hose stress relief designs are also provided. The roof may carry accumulators for pressurized air that feed cleaning nozzles as the roof descends. In addition, exhaust air may be used to assist cleaning the interior surfaces as the roof descends. All of the energy provided for cleaning and color change may be provided by accumulators.Type: GrantFiled: October 23, 2012Date of Patent: May 6, 2014Assignee: Nordson CorporationInventors: Jeffrey R. Shutic, Joseph G. Schroeder, Jeffrey E. Dailidas, Kenneth Kreeger
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Publication number: 20130294848Abstract: A pump for particulate material includes a pump chamber wherein material flows into the pump chamber under negative pressure and flows out of the pump chamber under positive pressure. A plurality of pinch valves are provided to control flow of material into and out of the pump chamber. The pinch valves are operated independent of each other and of the pump cycle rate. A modular design of the pump is provided. A pump control feature is provided for air flow rate control during positive and negative pressure conditions.Type: ApplicationFiled: June 25, 2013Publication date: November 7, 2013Inventors: Terrence M. Fulkerson, Stephen G. Nemethy, Terry John Thompson, Jeffrey A. Perkins, Joseph G. Schroeder