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).

  • Patent number: 11752703
    Abstract: 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: Grant
    Filed: September 30, 2020
    Date of Patent: September 12, 2023
    Assignee: CMD Corporation
    Inventors: Christopher L. White, Gregory J. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
  • Patent number: 10946591
    Abstract: 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: Grant
    Filed: October 3, 2018
    Date of Patent: March 16, 2021
    Assignee: CMD Corporation
    Inventors: Christopher L. White, Gregory J. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
  • Publication number: 20210031463
    Abstract: 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: Application
    Filed: September 30, 2020
    Publication date: February 4, 2021
    Applicant: CMD Corporation
    Inventors: Christopher L. White, Gregory J. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
  • Patent number: 10780645
    Abstract: 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: Grant
    Filed: August 2, 2019
    Date of Patent: September 22, 2020
    Assignee: CMD Corporation
    Inventors: Casey J Calmes, Peter T Hunnicutt, Curt A Frievalt, Mark C Krueger, Jason P Plutz
  • Publication number: 20200207048
    Abstract: 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: Application
    Filed: December 26, 2019
    Publication date: July 2, 2020
    Applicant: CMD Corporation
    Inventors: Timothy J. Rymer, Charles H. Sauder, Thomas C. Jansen, Curt A. Frievalt, Scott A. Beinema
  • Publication number: 20190366647
    Abstract: 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: Application
    Filed: August 2, 2019
    Publication date: December 5, 2019
    Applicant: CMD Corporation
    Inventors: Casey J. Calmes, Peter T. Hunnicutt, Curt A. Frievalt, Mark C. Krueger, Jason P. Plutz
  • Patent number: 10399273
    Abstract: 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: Grant
    Filed: December 9, 2016
    Date of Patent: September 3, 2019
    Assignee: CMD Corporation
    Inventors: Casey J Calmes, Peter T Hunnicutt, Curt A Frievalt, Mark C Krueger, Jason P Plutz
  • Publication number: 20190030833
    Abstract: 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: Application
    Filed: October 3, 2018
    Publication date: January 31, 2019
    Applicant: CMD Corporation
    Inventors: Christopher L. White, Gregory J. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
  • Publication number: 20170232659
    Abstract: 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: Application
    Filed: December 9, 2016
    Publication date: August 17, 2017
    Applicant: CMD Corporation
    Inventors: Casey J. Calmes, Peter T. Hunnicutt, Curt A. Frievalt, Mark C. Krueger, Jason P. Plutz
  • Publication number: 20130059708
    Abstract: 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: Application
    Filed: February 24, 2012
    Publication date: March 7, 2013
    Applicant: CMD CORPORATION
    Inventors: Christopher L. White, Gregory T. Prellwitz, Timothy J. Rymer, Curt A. Frievalt
  • Patent number: 7757460
    Abstract: 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: Grant
    Filed: August 8, 2008
    Date of Patent: July 20, 2010
    Assignee: CMD Corporation
    Inventors: Curt Frievalt, Brian E. Kettner
  • Publication number: 20100086241
    Abstract: 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: Application
    Filed: October 3, 2008
    Publication date: April 8, 2010
    Applicant: CMD Corporation
    Inventor: Curt A. Frievalt
  • Publication number: 20090241478
    Abstract: 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: Application
    Filed: June 10, 2009
    Publication date: October 1, 2009
    Applicant: CMD Corporation
    Inventors: Brian E. Kettner, Curt A. Frievalt
  • Publication number: 20080295459
    Abstract: 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: Application
    Filed: August 8, 2008
    Publication date: December 4, 2008
    Applicant: CMD Corporation
    Inventors: Curt Frievalt, Brian E. Kettner
  • Patent number: 7409810
    Abstract: 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: Grant
    Filed: October 2, 2006
    Date of Patent: August 12, 2008
    Assignee: CMD Corporation
    Inventors: Curt Frievalt, Brian E. Kettner
  • Patent number: 7325379
    Abstract: 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: Grant
    Filed: April 8, 2005
    Date of Patent: February 5, 2008
    Assignee: CMD Corporation
    Inventors: Brian E. Kettner, Curt A. Frievalt
  • Patent number: 7322169
    Abstract: 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: Grant
    Filed: January 5, 2005
    Date of Patent: January 29, 2008
    Assignee: CMD Corporation
    Inventors: Brian E. Kettner, Curt A. Frievalt
  • Publication number: 20080000202
    Abstract: 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: Application
    Filed: July 25, 2007
    Publication date: January 3, 2008
    Applicant: CMD Corporation
    Inventors: Brian Kettner, Curt Frievalt
  • Patent number: 7275354
    Abstract: 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: Grant
    Filed: December 7, 2005
    Date of Patent: October 2, 2007
    Assignee: CMD Corporation
    Inventors: Curt A. Frievalt, Brian E. Kettner
  • Publication number: 20070095021
    Abstract: 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: Application
    Filed: October 2, 2006
    Publication date: May 3, 2007
    Applicant: CMD Corporation
    Inventors: Curt Frievalt, Brian Kettner