Patents by Inventor Karl E. Hannan

Karl E. Hannan 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).

  • Rifle dry-fire apparatus and method
    Patent number: 9207027
    Abstract: A rifle lower receiver has a trigger well and a magazine well. A hammer is disposed in the trigger well and configured to pivot from a first hammer position to a second hammer position in response to moving a trigger from a first trigger position to a second trigger position. A gear member attached to the lower receiver has a predefined number of gear teeth and a locking pin extending from the gear member. A pawl is connected to the trigger and operationally engages the gear member to increment the gear member once per trigger pull. Upon reaching a predefined number of trigger pulls, the locking member locks the trigger. A release lever on the lower receiver is operably configured to advance the gear member one increment to unlock the trigger. A method of dry-fire training is also disclosed.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: December 8, 2015
    Inventors: Karl E. Hannan, William Jeff Marshall
  • Rifle dry-fire apparatus and method
    Patent number: 9057577
    Abstract: A rifle lower receiver has a trigger well and a magazine well. A hammer is disposed in the trigger well and configured to pivot from a first hammer position to a second hammer position in response to moving a trigger from a first trigger position to a second trigger position. A gear member attached to the lower receiver has a predefined number of gear teeth and a locking pin extending from the gear member. A pawl is connected to the trigger and operationally engages the gear member to increment the gear member once per trigger pull. Upon reaching a predefined number of trigger pulls, the locking member locks the trigger. A release lever on the lower receiver is operably configured to advance the gear member one increment to unlock the trigger. A method of dry-fire training is also disclosed.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: June 16, 2015
    Inventors: Karl E. Hannan, William Jeff Marshall
  • RIFLE DRY-FIRE APPARATUS AND METHOD
    Publication number: 20150013201
    Abstract: A rifle lower receiver has a trigger well and a magazine well. A hammer is disposed in the trigger well and configured to pivot from a first hammer position to a second hammer position in response to moving a trigger from a first trigger position to a second trigger position. A gear member attached to the lower receiver has a predefined number of gear teeth and a locking pin extending from the gear member. A pawl is connected to the trigger and operationally engages the gear member to increment the gear member once per trigger pull. Upon reaching a predefined number of trigger pulls, the locking member locks the trigger. A release lever on the lower receiver is operably configured to advance the gear member one increment to unlock the trigger. A method of dry-fire training is also disclosed.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 15, 2015
    Inventors: Karl E. Hannan, William Jeff Marshall