Patents by Inventor Curt Frievalt
Curt Frievalt 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: 11752703Abstract: 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: GrantFiled: September 30, 2020Date of Patent: September 12, 2023Assignee: CMD CorporationInventors: Christopher L. White, Gregory J. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
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Patent number: 10946591Abstract: 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: GrantFiled: October 3, 2018Date of Patent: March 16, 2021Assignee: CMD CorporationInventors: Christopher L. White, Gregory J. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
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Publication number: 20210031463Abstract: 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: September 30, 2020Publication date: February 4, 2021Applicant: CMD CorporationInventors: Christopher L. White, Gregory J. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
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Patent number: 10780645Abstract: A method and apparatus for forming pouches and/or bags is disclosed. A seal and/or insert is crushed using a multiphase sealer or crusher.Type: GrantFiled: August 2, 2019Date of Patent: September 22, 2020Assignee: CMD CorporationInventors: Casey J Calmes, Peter T Hunnicutt, Curt A Frievalt, Mark C Krueger, Jason P Plutz
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Publication number: 20200207048Abstract: A method and apparatus for making bags with hem seals is disclosed. The machine includes an infeed section and a draw tape section. Bags are made from a film and a film path extends through the infeed section and through the draw tape section. The draw tape section includes a hem sealer that includes a stationary sealing plate on one side of the film path such that film path passes across the stationary plate. A sealing head is on the second side of the film path, opposite the first side, such that the film following the film path passes between the sealing head and the stationary plate. A sealing section may be included. The draw tape section may include driven infeed an outfeed nips.Type: ApplicationFiled: December 26, 2019Publication date: July 2, 2020Applicant: CMD CorporationInventors: Timothy J. Rymer, Charles H. Sauder, Thomas C. Jansen, Curt A. Frievalt, Scott A. Beinema
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Publication number: 20190366647Abstract: A method and apparatus for forming pouches and/or bags is disclosed. A seal and/or insert is crushed using a multiphase sealer or crusher.Type: ApplicationFiled: August 2, 2019Publication date: December 5, 2019Applicant: CMD CorporationInventors: Casey J. Calmes, Peter T. Hunnicutt, Curt A. Frievalt, Mark C. Krueger, Jason P. Plutz
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Patent number: 10399273Abstract: A method and apparatus for forming pouches and/or bags is disclosed. A seal and/or insert is crushed using a multiphase sealer or crusher.Type: GrantFiled: December 9, 2016Date of Patent: September 3, 2019Assignee: CMD CorporationInventors: Casey J Calmes, Peter T Hunnicutt, Curt A Frievalt, Mark C Krueger, Jason P Plutz
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Publication number: 20190030833Abstract: 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: October 3, 2018Publication date: January 31, 2019Applicant: CMD CorporationInventors: Christopher L. White, Gregory J. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
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Publication number: 20170232659Abstract: A method and apparatus for forming pouches and/or bags is disclosed. A seal and/or insert is crushed using a multiphase sealer or crusher.Type: ApplicationFiled: December 9, 2016Publication date: August 17, 2017Applicant: CMD CorporationInventors: Casey J. Calmes, Peter T. Hunnicutt, Curt A. Frievalt, Mark C. Krueger, Jason P. Plutz
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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: 7757460Abstract: A vertical form fill and seal continuous pouch machine includes a forming tube having a cross section area of CA is disclosed. A film tube is continuously formed about the forming tube and fed downward. A horizontal sealing assembly includes at least one pair of opposing sealing bars that make horizontal seals on the film, thereby forming pouches. The horizontal seals are formed in a horizontal sealing zone, and the vertical distance from a lower end of the forming tube to the center of the horizontal sealing zone is a transition distance that is (in inches) preferably no more than 0.5 multiplied by the cross-section area (in sq inches).Type: GrantFiled: August 8, 2008Date of Patent: July 20, 2010Assignee: CMD CorporationInventors: Curt Frievalt, Brian E. Kettner
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Publication number: 20100086241Abstract: A drawtape bag includes a generally closed bottom, a generally open top, and closed sides connecting the bottom and the top. A drawtape hem, with a drawtape therein, is disposed along the top. There are a plurality of knockouts within the hem. A method and machine for of making such a drawtape bag includes forming at least two notches in the film with a notch section, and forming a plurality of knockouts in the film with a knockout section. A drawtape hem is formed in a drawtape section, which also inserts a drawtape.Type: ApplicationFiled: October 3, 2008Publication date: April 8, 2010Applicant: CMD CorporationInventor: Curt A. Frievalt
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Publication number: 20090241478Abstract: A method and apparatus for continuously or intermittently and vertically forming, filling and sealing packaging includes an infeed section, a pleating assembly, a forming tube and a sealing assembly. The pleating assembly imparts at least one pleat to the film. The film may be driven and measured at a nip following the pleating. The forming tube receives the film from the infeed section after the pleat has been made. A film tube is formed about the forming tube. The film tube is vertically fed downward to the sealing assembly which imparts seals to the film tube, thereby forming packages. A hole punch punches holes in the film tube. The film travels a film path that includes the hole punch, the forming tube, the vertical seal assembly and the horizontal seal assembly.Type: ApplicationFiled: June 10, 2009Publication date: October 1, 2009Applicant: CMD CorporationInventors: Brian E. Kettner, Curt A. Frievalt
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Publication number: 20080295459Abstract: A vertical form fill and seal continuous pouch machine includes a forming tube having a cross section area of CA is disclosed. A film tube is continuously formed about the forming tube and fed downward. A horizontal sealing assembly includes at least one pair of opposing sealing bars that make horizontal seals on the film, thereby forming pouches. The horizontal seals are formed in a horizontal sealing zone, and the vertical distance from a lower end of the forming tube to the center of the horizontal sealing zone is a transition distance that is (in inches) preferably no more than 0.5 multiplied by the cross-section area (in sq inches).Type: ApplicationFiled: August 8, 2008Publication date: December 4, 2008Applicant: CMD CorporationInventors: Curt Frievalt, Brian E. Kettner
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Patent number: 7409810Abstract: A vertical form fill and seal continuous pouch machine includes a forming tube having a cross section area of CA is disclosed. A film tube is continuously formed about the forming tube and fed downward. A horizontal sealing assembly includes at least one pair of opposing sealing bars that make horizontal seals on the film, thereby forming pouches. The horizontal seals are formed in a horizontal sealing zone, and the vertical distance from a lower end of the forming tube to the center of the horizontal sealing zone is a transition distance that is (in inches) preferably no more than 0.5 multiplied by the cross-section area (in sq inches).Type: GrantFiled: October 2, 2006Date of Patent: August 12, 2008Assignee: CMD CorporationInventors: Curt Frievalt, Brian E. Kettner
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Patent number: 7325379Abstract: A method and apparatus for continuously or intermittently and vertically forming, filling and sealing packaging includes an infeed section, a pleating assembly, a forming tube and a sealing assembly. The pleating assembly imparts at least one pleat to the film. The film may be driven and measured at a nip following the pleating. The forming tube receives the film from the infeed section after the pleat has been made. A film tube is formed about the forming tube. The film tube is vertically fed downward to the sealing assembly which imparts seals to the film tube, thereby forming packages. A hole punch punches holes in the film tube. The film travels a film path that includes the hole punch, the forming tube, the vertical seal assembly and the horizontal seal assembly.Type: GrantFiled: April 8, 2005Date of Patent: February 5, 2008Assignee: CMD CorporationInventors: Brian E. Kettner, Curt A. Frievalt
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Patent number: 7322169Abstract: A method and apparatus for continuously or intermittently and vertically forming, filling and sealing packaging includes an infeed section, a pleating assembly, a forming tube and a sealing assembly. The pleating assembly imparts at least one pleat to the film. The forming tube receives the film from the infeed section after the pleat has been made. A film tube is formed about the forming tube. The film tube is vertically fed downward to the sealing assembly which imparts seals to the film tube, thereby forming packages. A hole punch punches holes in the film tube. The film travels a film path that includes the hole punch, the forming tube, the vertical seal assembly and the horizontal seal assembly.Type: GrantFiled: January 5, 2005Date of Patent: January 29, 2008Assignee: CMD CorporationInventors: Brian E. Kettner, Curt A. Frievalt
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Publication number: 20080000202Abstract: A method and apparatus for continuously or intermittently and vertically forming, filling and sealing packaging includes an infeed section, a pleating assembly, a forming tube and a sealing assembly. The pleating assembly imparts at least one pleat to the film. The film may be driven and measured at a nip following the pleating. The forming tube receives the film from the infeed section after the pleat has been made. A film tube is formed about the forming tube. The film tube is vertically fed downward to the sealing assembly which imparts seals to the film tube, thereby forming packages. A hole punch punches holes in the film tube. The film travels a film path that includes the hole punch, the forming tube, the vertical seal assembly and the horizontal seal assembly.Type: ApplicationFiled: July 25, 2007Publication date: January 3, 2008Applicant: CMD CorporationInventors: Brian Kettner, Curt Frievalt
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Patent number: 7275354Abstract: A method and apparatus for continuously or intermittently and vertically forming, filling and sealing packaging includes an infeed section, a pleating assembly, a forming tube and a sealing assembly. The pleating assembly imparts at least one pleat to the film. The film may be driven and measured at a nip following the pleating. The forming tube receives the film from the infeed section after the pleat has been made. A film tube is formed about the forming tube. The film tube is vertically fed downward to the sealing assembly which imparts seals to the film tube, thereby forming packages. A hole punch punches holes in the film tube. The film travels a film path that includes the hole punch, the forming tube, the vertical seal assembly and the horizontal seal assembly.Type: GrantFiled: December 7, 2005Date of Patent: October 2, 2007Assignee: CMD CorporationInventors: Curt A. Frievalt, Brian E. Kettner
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Publication number: 20070095021Abstract: A vertical form fill and seal continuous pouch machine includes a forming tube having a cross section area of CA is disclosed. A film tube is continuously formed about the forming tube and fed downward. A horizontal sealing assembly includes at least one pair of opposing sealing bars that make horizontal seals on the film, thereby forming pouches. The horizontal seals are formed in a horizontal sealing zone, and the vertical distance from a lower end of the forming tube to the center of the horizontal sealing zone is a transition distance that is (in inches) preferably no more than 0.5 multiplied by the cross-section area (in sq inches).Type: ApplicationFiled: October 2, 2006Publication date: May 3, 2007Applicant: CMD CorporationInventors: Curt Frievalt, Brian Kettner