Patents by Inventor David M. Dundorf

David M. Dundorf 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: 10158168
    Abstract: Improved radio-transparent communication tower panel security devices that can be easily mounted to and strapped around the cover panels of communication towers, including flag-supporting cellular communication towers, so as to band and secure the cover panels thereto and prevent them from falling off in high winds and/or other adverse weather conditions, while preventing wear and tear of flags and their lanyards. Preferably, the communication tower panel security device employs a flexible plastic tubing assembly and a ratchet-based connecting/tensioning assembly for safely securing radiation-transparent panels covering antenna service bays of a wireless telecommunication tower.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: December 18, 2018
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Patent number: 9799950
    Abstract: Improved radio-transparent communication tower panel security devices that can be easily mounted to and strapped around the cover panels of communication towers, including flag-supporting cellular communication towers, so as to band and secure the cover panels thereto and prevent them from falling off in high winds and/or other adverse weather conditions, while preventing wear and tear of flags and their lanyards. Preferably, the communication tower panel security device employs a flexible plastic tubing assembly and a connecting/tensioning assembly having pass-through channels for safely securing radiation-transparent panels covering antenna service bays of a wireless telecommunication tower.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: October 24, 2017
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Patent number: 9716310
    Abstract: A method of installing of a communication tower panel security device around the circumference of an antenna service bay arranged in a communication tower, and then tensioning the communication tower security device without the use of tools.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: July 25, 2017
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Patent number: 9711846
    Abstract: Improved radio-transparent communication tower panel security devices that can be easily mounted to and strapped around the cover panels of communication towers, including flag-supporting cellular communication towers, so as to band and secure the cover panels thereto and prevent them from falling off in high winds and/or other adverse weather conditions, while preventing wear and tear of flags and their lanyards. Preferably, the communication tower panel security device employs a flexible plastic tubing assembly and a connecting/tensioning assembly having first and second connector modules for safely securing radiation-transparent panels covering antenna service bays of a wireless telecommunication tower.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: July 18, 2017
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Patent number: 9634386
    Abstract: Improved radio-transparent communication tower panel security devices that can be easily mounted to and strapped around the cover panels of communication towers, including flag-supporting cellular communication towers, so as to band and secure the cover panels thereto and prevent them from falling off in high winds and/or other adverse weather conditions, while preventing wear and tear of flags and their lanyards.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: April 25, 2017
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Publication number: 20160372826
    Abstract: Improved radio-transparent communication tower panel security devices that can be easily mounted to and strapped around the cover panels of communication towers, including flag-supporting cellular communication towers, so as to band and secure the cover panels thereto and prevent them from falling off in high winds and/or other adverse weather conditions, while preventing wear and tear of flags and their lanyards. Preferably, the communication tower panel security device employs a flexible plastic tubing assembly and a connecting/tensioning assembly having pass-through channels for safely securing radiation-transparent panels covering antenna service bays of a wireless telecommunication tower.
    Type: Application
    Filed: July 28, 2016
    Publication date: December 22, 2016
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Publication number: 20160359225
    Abstract: Improved radio-transparent communication tower panel security devices that can be easily mounted to and strapped around the cover panels of communication towers, including flag-supporting cellular communication towers, so as to band and secure the cover panels thereto and prevent them from falling off in high winds and/or other adverse weather conditions, while preventing wear and tear of flags and their lanyards. Preferably, the communication tower panel security device employs a flexible plastic tubing assembly and a ratchet-based connecting/tensioning assembly for safely securing radiation-transparent panels covering antenna service bays of a wireless telecommunication tower.
    Type: Application
    Filed: July 28, 2016
    Publication date: December 8, 2016
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Publication number: 20160359226
    Abstract: Improved radio-transparent communication tower panel security devices that can be easily mounted to and strapped around the cover panels of communication towers, including flag-supporting cellular communication towers, so as to band and secure the cover panels thereto and prevent them from falling off in high winds and/or other adverse weather conditions, while preventing wear and tear of flags and their lanyards. Preferably, the communication tower panel security device employs a flexible plastic tubing assembly and a connecting/tensioning assembly having first and second connector modules for safely securing radiation-transparent panels covering antenna service bays of a wireless telecommunication tower.
    Type: Application
    Filed: July 28, 2016
    Publication date: December 8, 2016
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Publication number: 20160359220
    Abstract: A method of installing of a communication tower panel security device around the circumference of an antenna service bay arranged in a communication tower, and then tensioning the communication tower security device without the use of tools.
    Type: Application
    Filed: July 28, 2016
    Publication date: December 8, 2016
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Publication number: 20160211574
    Abstract: Improved radio-transparent communication tower panel security devices that can be easily mounted to and strapped around the cover panels of communication towers, including flag-supporting cellular communication towers, so as to band and secure the cover panels thereto and prevent them from falling off in high winds and/or other adverse weather conditions, while preventing wear and tear of flags and their lanyards.
    Type: Application
    Filed: January 19, 2015
    Publication date: July 21, 2016
    Inventors: Christopher C. Dundorf, Patrick Melvin, David M. Dundorf
  • Patent number: 6658777
    Abstract: A readerboard signage system which allows signage characters to be easily changed within a pair of parallel extending tracks. In the illustrative embodiments, the system includes an optically transparent character protective viewing panel that is placed over the sequence of characters held in place within the pair of parallel extending tracks. The panel includes a lip portion which cooperates with the lower character holding track, to prevent rain, ice, and snow from entering the tracks, while the viewing panel itself protects the underlying characters from such natural elements and vandalism, without detracting from the utility and aesthetic appearance of the system.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: December 9, 2003
    Inventor: David M. Dundorf
  • Publication number: 20030066223
    Abstract: A readerboard signage system which allows signage characters to be easily changed within a pair of parallelly extending tracks. In the illustrative embodiments, the system includes an optically transparent character protective viewing panel that is placed over the sequence of characters held in place within the pair of parallelly extending tracks. The panel includes a lip portion which cooperates with the lower character holding track, to prevent rain, ice, and snow from entering the tracks, while the viewing panel itself protects the underlying characters from such natural elements and vandalism, without detracting from the utility and aesthetic appearance of the system.
    Type: Application
    Filed: August 22, 2002
    Publication date: April 10, 2003
    Inventor: David M. Dundorf
  • Patent number: 6459952
    Abstract: The present invention concerns computer-produced carved signs and methods and apparatus for making the same. A computer-produced carved sign embodying a signage work having three-dimensional surfaces, is produced by a method which comprises, designing on a computer-aided design system, a three-dimensional graphical model of the signage work having three-dimensional surfaces to be carved in a signboard. On the computer-aided design system, a desired mathematical representation of the three-dimensional graphical model of the signage work to be carved in the signboard, is determined, and the desired mathematical representation is provided to a computer-aided machining system having a carving tool.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: October 1, 2002
    Inventor: David M. Dundorf
  • Patent number: 6438880
    Abstract: A weather-proof changeable-type readerboard signage system comprising a signboard having a substantially planar surface, and supportable above the Earth's surface at a predetermined viewing height. A pair of upper and lower character holding tracks are attached to the substantially planar surface of the signboard and extend in a parallel manner relative to each other by a predetermined distance. A plurality of character substrates of rectangular geometry, bearing a graphical character, and having a height dimension slightly less than the predetermined distance, are front loadable into the pair of upper and lower character holding tracks, and releasably retained therewithin so as to form a string of characters displaying a readable message.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: August 27, 2002
    Inventor: David M. Dundorf
  • Publication number: 20020095236
    Abstract: The present invention concerns computer-produced carved signs and methods and apparatus for making the same. A computer-produced carved sign embodying a signage work having three-dimensional surfaces, is produced by a method which comprises, designing on a computer-aided design system, a three-dimensional graphical model of the signage work having three-dimensional surfaces to be carved in a signboard. On the computer-aided design system, a desired mathematical representation of the three-dimensional graphical model of the signage work to be carved in the signboard, is determined, and the desired mathematical representation is provided to a computer-aided machining system having a carving tool.
    Type: Application
    Filed: December 7, 1998
    Publication date: July 18, 2002
    Inventor: DAVID M. DUNDORF
  • Publication number: 20010018811
    Abstract: A readerboard signage system which allows signage characters to be easily changed within a pair of parallelly extending tracks. In the illustrative embodiments, the system includes an optically transparent character protective viewing panel that is placed over the sequence of characters held in place within the pair of parallelly extending tracks. The panel includes a lip portion which cooperates with the lower character holding track, to prevent rain, ice, and snow from entering the tracks, while the viewing panel itself protects the underlying characters from such natural elements and vandalism, without detracting from the utility and aesthetic appearance of the system.
    Type: Application
    Filed: December 27, 2000
    Publication date: September 6, 2001
    Inventor: David M. Dundorf
  • Patent number: 6178679
    Abstract: A weather-proof changeable-type readerboard signage system comprising a signboard having a substantially planar surface, and supportable above the Earth's surface at a predetermined viewing height. A pair of upper and lower character holding tracks are attached to the substantially planar surface of the signboard and extend in a parallel manner relative to each other by a predetermined distance. A plurality of character substrates of rectangular geometry, bearing a graphical character, and having a height dimension slightly less than the predetermined distance, are front loadable into the pair of upper and lower character holding tracks, and releasably retained therewithin so as to form a string of characters displaying a readable message.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: January 30, 2001
    Inventor: David M. Dundorf
  • Patent number: 5703782
    Abstract: The present invention concerns computer-produced carved signs and methods and apparatus for making the same. A computer-produced carved sign embodying a signage work having three-dimensional surfaces, is produced by a method which comprises, designing on a computer-aided design system, a three-dimensional graphical model of the signage work having three-dimensional surfaces to be carved in a signboard. On the computer-aided design system, a desired mathematical representation of the three-dimensional graphical model of the signage work to be carved in the signboard, is determined, and the desired mathematical representation is provided to a computer-aided machining system having a carving tool.
    Type: Grant
    Filed: July 26, 1995
    Date of Patent: December 30, 1997
    Inventor: David M. Dundorf
  • Patent number: 5197013
    Abstract: A computer-produced carved sign having three-dimensional surfaces, is produced by a method which comprises designing on a computer-aided design system, a three-dimensional graphical model of the signage work having three-dimensional surfaces to be carved in a signboard. On the computer-aided design system, a desired mathematical representation of the three-dimensional graphical model of the signage work to be carved in the signboard, is determined, and the desired mathematical representation is provided to a computer-aided machining system having a carving tool. Material constituting the signboard is removed using the carving tool moving under the controlled guidance of the computer-aided machining system. The CAD system allows the user to input an alpha-numeric character. The CAD system automatically creates the machining path by developing similar outlines of the alpha-numeric character and projects these outlines into the 3D graphical model.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: March 23, 1993
    Assignee: David M. Dundorf
    Inventor: David M. Dundorf