Patents by Inventor Mark D. Hendricks

Mark D. Hendricks 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: 11543205
    Abstract: A muzzle brake for use with a firearm such as a muzzle-loading firearm, and including at least one access port in the muzzle brake that is large enough (for example at least about 0.5? or more minimum dimension) for access by a user's fingertip to remove a cleaning patch from the muzzle brake. One or more vent ports that are relatively smaller than the access port may also be provided in the muzzle brake.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: January 3, 2023
    Assignee: BLACKPOWDER PRODUCTS, INC.
    Inventors: Michael B. Holly, Mark D. Hendricks
  • Patent number: 11073353
    Abstract: A firearm having a threaded barrel-receiver connection, with a threaded receiver opening for cooperative engagement with a threaded barrel. The receiver is also compatible with a clamping system for engagement of an unthreaded barrel, so that threaded and unthreaded barrels may be used interchangeably. The threads of the receiver may have a flat crested thread profile for sliding engagement upon installation of an unthreaded barrel.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: July 27, 2021
    Assignee: BLACKPOWDER PRODUCTS, INC.
    Inventors: Mark D. Hendricks, George A. Hawthorn
  • Patent number: 9810507
    Abstract: An open ignition breech plug for a muzzle-loading firearm. The open ignition breech plug includes an internal body portion for removable installation into the breech end of a barrel of the muzzle-loader, and an external body portion comprising a gripping surface, a nipple for receiving an ignition source such as a percussion cap, and at least one open portion of the external body portion for external visibility of the nipple and a percussion cap mounted thereon. The nipple can be integrally formed with the external body portion or removably mounted thereto.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: November 7, 2017
    Assignee: BLACKPOWDER PRODUCTS, INC.
    Inventors: Mark D. Hendricks, Kenneth L. Morgan
  • Patent number: 9459071
    Abstract: An open ignition breech plug for a muzzle-loading firearm. The open ignition breech plug includes an internal body portion for removable installation into the breech end of a barrel of the muzzle-loader, and an external body portion comprising a gripping surface, a nipple for receiving an ignition source such as a percussion cap, and at least one open portion of the external body portion for external visibility of the nipple and a percussion cap mounted thereon. The nipple can be integrally formed with the external body portion or removably mounted thereto.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: October 4, 2016
    Assignee: BLACKPOWDER PRODUCTS, INC.
    Inventors: Mark D. Hendricks, Kenneth L. Morgan
  • Patent number: 9080830
    Abstract: A dart gun for medicating or tranquilizing animals, which includes a barrel and a breech plug, the barrel including a bore defining a longitudinal axis extending from a muzzle end to a breech end, and the breech end including a breech plug chamber and a notch. The breech plug is removably engageable with the breech plug chamber and includes a plug member, an extractor, and a baffle member. The extractor provides convenient loading, firing and ejecting of a blank firing cartridge that is used to fire the dart from the barrel. The baffle rod provides for muffling the sound of the explosion of the blank firing cartridge, and reduces the amount of heat and flames that are exposed to the dart when firing the blank firing cartridge.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: July 14, 2015
    Assignee: BLACKPOWDER PRODUCTS, INC.
    Inventors: Mark D. Hendricks, Larry N. Treadway
  • Patent number: 7243456
    Abstract: A system and method for mounting a telescopic sight or “scope” to a firearm. The system is convertible or universal, in that it includes interchangeable mounting plate inserts allowing the mounting plate to be installed onto two or more different types of firearms having differing mounting hole configurations.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: July 17, 2007
    Assignee: Blackpowder Products, Inc.
    Inventors: Dean N. Williams, Ned J. Hollenbach, Mark D. Hendricks