Patents by Inventor Robert H. Hogrefe

Robert H. Hogrefe 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).

  • Hermetic seal and a method of assembling
    Patent number: 11320648
    Abstract: A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: May 3, 2022
    Assignee: Access Optics, LLC
    Inventors: Robert H. Hogrefe, Thomas Mayer
  • Hermetic Seal and a Method of Assembling
    Publication number: 20210048664
    Abstract: A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.
    Type: Application
    Filed: October 19, 2020
    Publication date: February 18, 2021
    Inventors: Robert H. Hogrefe, Thomas Mayer
  • Hermetic seal and a method of assembling
    Patent number: 10809525
    Abstract: A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: October 20, 2020
    Assignee: Access Optics, LLC
    Inventors: Robert H. Hogrefe, Thomas Mayer
  • Endoscope coupler
    Patent number: 10524637
    Abstract: An endoscope coupler with a split focus ring having direct engagement between the focus ring and the lens cell. The endoscope coupler may also have a changeable lens cartridge which can be replaced when moisture penetrates and ruins a the previous lens cartridge. Additional features may include branding security key which prevents use of replacement parts from third parties.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: January 7, 2020
    Assignee: Access Optics, LLC
    Inventors: Robert H. Hogrefe, Thomas Mayer, John Hannam
  • Hermetic Seal and a Method of Assembling
    Publication number: 20190187463
    Abstract: A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 20, 2019
    Inventors: Robert H. Hogrefe, Thomas Mayer
  • Hermetic seal and a method of assembling
    Patent number: 10151920
    Abstract: A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: December 11, 2018
    Assignee: Access Optics, LLC
    Inventors: Robert H. Hogrefe, Thomas Mayer
  • Hermetic Seal and a Method of Assembling
    Publication number: 20180157032
    Abstract: A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.
    Type: Application
    Filed: December 4, 2017
    Publication date: June 7, 2018
    Inventors: Robert H. Hogrefe, Thomas Mayer
  • Endoscope Coupler
    Publication number: 20180103831
    Abstract: An endoscope coupler with a split focus ring having direct engagement between the focus ring and the lens cell. The endoscope coupler may also have a changeable lens cartridge which can be replaced when moisture penetrates and ruins a the previous lens cartridge. Additional features may include branding security key which prevents use of replacement parts from third parties.
    Type: Application
    Filed: October 23, 2017
    Publication date: April 19, 2018
    Inventors: Robert H. Hogrefe, Thomas Mayer, John Hannam
  • Hermetic seal and a method of assembling
    Patent number: 9835855
    Abstract: A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: December 5, 2017
    Assignee: Access Optics, LLC
    Inventors: Robert H. Hogrefe, Thomas Mayer
  • Endoscope coupler
    Patent number: 9795279
    Abstract: An endoscope coupler with a split focus ring having direct engagement between the focus ring and the lens cell. The endoscope coupler may also have a changeable lens cartridge which can be replaced when moisture penetrates and ruins a the previous lens cartridge. Additional features may include branding security key which prevents use of replacement parts from third parties.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: October 24, 2017
    Assignee: Access Optics, LLC
    Inventors: Robert H. Hogrefe, Thomas Mayer, John Hannam
  • HERMETIC SEAL AND A METHOD OF ASSEMBLING
    Publication number: 20150286051
    Abstract: A hermetic seal between an optical element and a metal mount or housing using a fluoropolymer. The fluoropolymer is dispersed along the interior edge of the metal mount. The metal mount and fluoropolymer are then heated to a temperature exceeding the melting point of the fluoropolymer. Once heated the optical element is pressed into the metal mount and allowed to cool. The metal mount, optical element and thickness of fluoropolymer are sized to provide an interference fit between the metal mount and optical element.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 8, 2015
    Inventors: Robert H. Hogrefe, Thomas Mayer
  • Endoscope Coupler
    Publication number: 20150112137
    Abstract: An endoscope coupler with a split focus ring having direct engagement between the focus ring and the lens cell. The endoscope coupler may also have a changeable lens cartridge which can be replaced when moisture penetrates and ruins a the previous lens cartridge. Additional features may include branding security key which prevents use of replacement parts from third parties.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
    Inventors: Robert H. Hogrefe, Thomas Mayer, John Hannam