Patents by Inventor Gregory T. Prellwitz
Gregory T. Prellwitz 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: 11752727Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have connected thereto, a source of power that is an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire ay be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones ma include temperature zones, cartridge heaters, cooling air, or hated air, or a source of ultrasonic, microwave or radiative energy.Type: GrantFiled: April 15, 2021Date of Patent: September 12, 2023Assignee: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher L. White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Publication number: 20210229392Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have connected thereto, a source of power that is an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire ay be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones ma include temperature zones, cartridge heaters, cooling air, or hated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: April 15, 2021Publication date: July 29, 2021Applicant: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher L. White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Publication number: 20180056599Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a single sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, includes a heating wire. The heating wire may be an NiCr wire stitched into the heater, and be disposed on a cap or on the seal bar. The weakening zone may create a line of weakness that is uniform or varies in intensity. The sealing zone may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: September 13, 2017Publication date: March 1, 2018Applicant: CMD CorporationInventors: Paul A. Selle, Gregory T. Prellwitz
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Patent number: 9751273Abstract: A machine and method for making bags is described and includes a web, traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: GrantFiled: January 12, 2007Date of Patent: September 5, 2017Assignee: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Patent number: 9434106Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a single sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into the heater, and be disposed on a cap or on the seal bar. The weakening zone may create a line of weakness that is uniform or varies in intensity. The sealing zone may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: GrantFiled: March 8, 2011Date of Patent: September 6, 2016Inventors: Paul A. Selle, Gregory T. Prellwitz
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Publication number: 20160096339Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: December 11, 2015Publication date: April 7, 2016Applicant: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radke, Charles H. Sauder, Paul A. Johnson, Christopher L. White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leizke, Bradley J. Schmoll
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Patent number: 9238343Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The drum includes at least one seal bar, having a first sealing zone and an adjacent weakening zone. The weakening zone may be a heated perforator, heating wire, and/or may create an auxiliary sealed area. The heating wire is powered by a source of power at an adjustable voltage or magnitude, and/or pulsed, and/or with a feedback loop. The heating wire may make intermittent contact with the web and/or be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: GrantFiled: July 26, 2012Date of Patent: January 19, 2016Assignee: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Publication number: 20150190980Abstract: A bag machine, and method of making bags, has a sealing station a perforating station, and a downstream seal and perforation inspection station, or a perforation detection station and/or a seal inspection station is disclosed. Control of the perforating and sealing stations is preferably closed loop. The seal and perforation inspection station preferably includes a perforation detector that triggers a vision system and/or a camera, and the film is illuminated. Preferably, the inspection station is enclosed in an opaque housing, or the ambient light is otherwise blocked. The seal and perforation inspection station preferably provides an image output a display visible to a user. The vision system preferably includes a perforation location module and/or determines the distance between the seal and perforation. A downstream processing station can be provided, and can have a detected fault input, connected to a fault detect output from the seal and perforation inspection station.Type: ApplicationFiled: March 23, 2015Publication date: July 9, 2015Applicant: CMD CORPORATIONInventors: Paul A. Selle, Gordon M. Breier, David G. Kuchenbecker, Gregory T. Prellwitz
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Patent number: 8998787Abstract: A bag machine, and method of making bags, has a sealing station a perforating station, and a downstream seal and perforation inspection station, or a perforation detection station and/or a seal inspection station is disclosed. Control of the perforating and sealing stations is preferably closed loop. The seal and perforation inspection station preferably includes a perforation detector that triggers a vision system and/or a camera, and the film is illuminated. Preferably, the inspection station is enclosed in an opaque housing, or the ambient light is otherwise blocked. The seal and perforation inspection station preferably provides an image output a display visible to a user. The vision system preferably includes a perforation location module and/or determines the distance between the seal and perforation. A downstream processing station can be provided, and can have a detected fault input, connected to a fault detect output from the seal and perforation inspection station.Type: GrantFiled: December 16, 2008Date of Patent: April 7, 2015Assignee: CMD CorporationInventors: Paul A. Selle, Gordon M. Breier, David G. Kuchenbecker, Gregory T. Prellwitz
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Publication number: 20130190155Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The drum includes at least one seal bar, having a first sealing zone and an adjacent weakening zone. The weakening zone may be a heated perforator, heating wire, and/or may create an auxiliary sealed area. The heating wire is powered by a source of power at an adjustable voltage or magnitude, and/or pulsed, and/or with a feedback loop. The heating wire may make intermittent contact with the web and/or be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: July 26, 2012Publication date: July 25, 2013Applicant: CMD CORPORATIONInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Publication number: 20130059708Abstract: A method and apparatus for making bags or pouches is disclosed. An ultrasonic sealer may be used to form the seals. Sealing patterns may be used to provide a desired strength profile.Type: ApplicationFiled: February 24, 2012Publication date: March 7, 2013Applicant: CMD CORPORATIONInventors: Christopher L. White, Gregory T. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
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Patent number: 8257236Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: GrantFiled: August 26, 2011Date of Patent: September 4, 2012Assignee: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Publication number: 20110312480Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: August 26, 2011Publication date: December 22, 2011Applicant: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Patent number: 8029428Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a single sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into the heater, and be disposed on a cap or on the seal bar. The weakening zone may create a line of weakness that is uniform or varies in intensity. The sealing zone may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: GrantFiled: October 17, 2008Date of Patent: October 4, 2011Assignee: CMD CorporationInventors: Paul A. Selle, Gregory T. Prellwitz
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Patent number: 8012076Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: GrantFiled: May 11, 2009Date of Patent: September 6, 2011Assignee: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Publication number: 20110160029Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a single sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into the heater, and be disposed on a cap or on the seal bar. The weakening zone may create a line of weakness that is uniform or varies in intensity. The sealing zone may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: March 8, 2011Publication date: June 30, 2011Applicant: CMD CorporationInventors: Paul A. Selle, Gregory T. Prellwitz
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Publication number: 20090305859Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: May 11, 2009Publication date: December 10, 2009Applicant: CMD CorporationInventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
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Publication number: 20090126853Abstract: A bag machine, and method of making bags, has a sealing station a perforating station, and a downstream seal and perforation inspection station, or a perforation detection station and/or a seal inspection station is disclosed. Control of the perforating and sealing stations is preferably closed loop. The seal and perforation inspection station preferably includes a perforation detector that triggers a vision system and/or a camera, and the film is illuminated. Preferably, the inspection station is enclosed in an opaque housing, or the ambient light is otherwise blocked. The seal and perforation inspection station preferably provides an image output a display visible to a user. The vision system preferably includes a perforation location module and/or determines the distance between the seal and perforation. A downstream processing station can be provided, and can have a detected fault input, connected to a fault detect output from the seal and perforation inspection station.Type: ApplicationFiled: December 16, 2008Publication date: May 21, 2009Applicant: CMD CorporationInventors: Paul A. Selle, Gordon M. Breier, David G. Kuchenbecker, Gregory T. Prellwitz
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Publication number: 20090098992Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a single sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into the heater, and be disposed on a cap or on the seal bar. The weakening zone may create a line of weakness that is uniform or varies in intensity. The sealing zone may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: October 17, 2008Publication date: April 16, 2009Applicant: CMD CorporationInventors: Paul A. Selle, Gregory T. Prellwitz
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Publication number: 20080312056Abstract: A machine and method for making bags is described and includes a web , traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.Type: ApplicationFiled: January 12, 2007Publication date: December 18, 2008Applicant: CMD CorporationInventors: Paul Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll