Patents by Inventor Richard M. Fitzpatrick

Richard M. Fitzpatrick 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: 7958660
    Abstract: The present invention is an ammunition magazine, preferably made of a glass fiber reinforced polymer, utilizing a structurally enhancing ridge, angular guide rails and a follower made to interface with said guide rails to reduce wobble. The preferred embodiment also features a protective cover that distributes forces from the spring to more structurally sound areas of the magazine, thus reducing feed end splay, and may include an ammunition indication system comprised of at least one window and a noticeable marker on the follower spring. The follower and magazine casing are also designed to interface to prevent the follower from popping out of the feed end and the floor plate of the magazine utilizes a locking plate and sliding relationship between the floor plate, locking plate and magazine to secure the floor plate onto the magazine casing.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: June 14, 2011
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric C. Burt
  • Publication number: 20110113663
    Abstract: The present invention is a self-leveling follower for an ammunition magazine. Side extensions provide greater stability to the follower and aid in its self-leveling feature. The follower according to the present invention is also manufactured to facilitate removal from and insertion into the magazine casing when maintaining the magazine. Additional features provide greater utility by improving bolt-stop capacity and consistency of ammunition feed.
    Type: Application
    Filed: May 3, 2010
    Publication date: May 19, 2011
    Applicant: Magpul Industries Corp.
    Inventors: Brian L. Nakayama, Eric S. Nakayama, Richard M. Fitzpatrick, Michael T. Mayberry
  • Patent number: 7908780
    Abstract: The present invention is an ammunition magazine, preferably made of a glass fiber reinforced polymer, utilizing a structurally enhancing ridge, angular guide rails and a follower made to interface with said guide rails to reduce wobble. The preferred embodiment also features a protective cover that distributes forces from the spring to more structurally sound areas of the magazine, thus reducing feed end splay, and an ammunition indication system comprised of at least one window and a noticeable marker on the follower spring. The follower and magazine casing are also designed to interface to prevent the follower from popping out of the feed end and the floor plate of the magazine utilizes a locking plate and sliding relationship between the floor plate, locking plate and magazine to secure the floor plate onto the magazine casing. The cover features built in tools for, among other things, unloading and disassembling the magazine.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: March 22, 2011
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael Mayberry, Eric S. Nakayama
  • Publication number: 20110005113
    Abstract: The present invention is an ammunition magazine, preferably made of a glass fiber reinforced polymer, utilizing a structurally enhancing ridge, angular guide rails and a follower made to interface with said guide rails to reduce wobble. The preferred embodiment also features a protective cover that distributes forces from the spring to more structurally sound areas of the magazine, thus reducing feed end splay, and may include an ammunition indication system comprised of at least one window and a noticeable marker on the follower spring. The follower and magazine casing are also designed to interface to prevent the follower from popping out of the feed end and the floor plate of the magazine utilizes a locking plate and sliding relationship between the floor plate, locking plate and magazine to secure the floor plate onto the magazine casing.
    Type: Application
    Filed: April 15, 2008
    Publication date: January 13, 2011
    Applicant: MAGPUL INDUSTRIES CORP
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric C. Burt
  • Publication number: 20100251590
    Abstract: The present invention is an ammunition magazine, preferably made of a glass fiber reinforced polymer, utilizing a structurally enhancing ridge, angular guide rails and a follower made to interface with said guide rails to reduce wobble. The preferred embodiment also features a protective cover that distributes forces from the spring to more structurally sound areas of the magazine, thus reducing feed end splay, and an ammunition indication system comprised of at least one window and a noticeable marker on the follower spring. The follower and magazine casing are also designed to interface to prevent the follower from popping out of the feed end and the floor plate of the magazine utilizes a locking plate and sliding relationship between the floor plate, locking plate and magazine to secure the floor plate onto the magazine casing. The cover features built in tools for, among other things, unloading and disassembling the magazine.
    Type: Application
    Filed: December 17, 2007
    Publication date: October 7, 2010
    Applicant: MAGPUL INDUSTRIES CORP
    Inventors: Richard M. Fitzpatrick, Michael Mayberry, Eric S. Nakayama
  • Patent number: 7798045
    Abstract: The present invention is an improved charging handle for a firearm. The handle is generally non-reciprocating and features a user activated forward assist. The major components are an actuator to provide charging function and upon which other components are mounted, a spring biased lever with a hook which biases downward so that the hook may interface a bolt carrier when the lever is activated, and a blade upon which handle structure is mounted. In the preferred embodiment, the handle is ambidextrous and features a spring detent to keep it in stowed position until the user desires use. The handle will only reciprocate when the lever is activated, which in turn requires intentional user action, thereby providing a relatively safer weapon to operate.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: September 21, 2010
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael Mayberry, Brian Nakayama, Eric Burt
  • Publication number: 20100205846
    Abstract: The present invention is a modular gunstock utilizing a two-piece mounting structure and a stock module. The structure comprises a weapon attachment, in the case of an AR15/M16 rifle a receiver extension tube, and a sleeve slidable over said attachment and containing mounting structure for the stock module. The disclosed stock module is adjustable for length and features a length pre-set system, a latch with independent dual-pawls and an integrated impact buffer, modular tailpiece, and storage. The sleeve also features a position selectable fixed cheek plate.
    Type: Application
    Filed: February 8, 2008
    Publication date: August 19, 2010
    Applicant: MAGPUL INDUSTRIES CORP
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric S. Nakayama
  • Patent number: 7762018
    Abstract: The present invention is a modular gunstock utilizing a two-piece mounting structure and a stock module. The structure comprises a weapon attachment, in the case of an AR15/M16 rifle a receiver extension tube, and a sleeve slidable over said attachment and containing mounting structure for the stock module. The disclosed stock module is adjustable for length and features a length pre-set system, a latch with independent dual-pawls and an integrated impact buffer, modular tailpiece, and storage. The sleeve also features a position selectable fixed cheek plate.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: July 27, 2010
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric S. Nakayama, Brian L. Nakayama
  • Publication number: 20100139144
    Abstract: The present invention is a modular handgrip for rifles and other long guns. The handgrip features a base with a locking dovetail rail on a first side and a second opposite side configured to receive a rail. Back strap additions are provided capable of receiving the rail on the body, which are customizable to a user's preferences while fore straps are provided with rails in a similar manner. Also provided is a storage compartment inside the main body, accessible from a bottom of the grip. As such, an organization, such as an armory, can provide a number of customizable options for handgrips while only stocking a basic grip and a number of optional modules at lower unit and storage costs. Of particular note is a modular fore strap design with an integrated trigger guard.
    Type: Application
    Filed: November 30, 2009
    Publication date: June 10, 2010
    Applicant: MAGPUL INDUSTRIES, CORP.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry
  • Publication number: 20100126053
    Abstract: The present invention is a high capacity, non-drum magazine. The high capacity magazine comprises a broad general storage area capable of holding four staggered stacks of ammunition, a unified follower on a spring system biasing the follower and associated ammunition, a central partition a barrier separating two dual staggered round stacks and around which the follower will pass, and a transition area between the feed end of the magazine and the storage area. The spring may be a composite spring system, made of two springs joined in series, or a single, variable constant, spring.
    Type: Application
    Filed: July 17, 2009
    Publication date: May 27, 2010
    Applicant: MAGPUL INDUSTRIES CORP.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Michael Morgan, Eric C. Burt, Eric S. Nakayama
  • Patent number: D615143
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: May 4, 2010
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
  • Patent number: D615144
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: May 4, 2010
    Assignee: Magpul Industries Corp.
    Inventors: Michael T. Mayberry, Richard M. Fitzpatrick, Eric C. Burt
  • Patent number: D616057
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: May 18, 2010
    Assignee: Magpul Industries, Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Nick Booras, Drake Clark
  • Patent number: D620544
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: July 27, 2010
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Nick Booras, Drake Clark, Brian L. Nakayama
  • Patent number: D620545
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: July 27, 2010
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Nick Booras, Drake Clark, Brian L. Nakayama
  • Patent number: D620546
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: July 27, 2010
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric C. Burt
  • Patent number: D622802
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: August 31, 2010
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric C. Burt
  • Patent number: D636453
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: April 19, 2011
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric C. Burt
  • Patent number: D640342
    Type: Grant
    Filed: May 23, 2009
    Date of Patent: June 21, 2011
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric C. Burt
  • Patent number: D642647
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: August 2, 2011
    Assignee: Magpal Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael Mayberry