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: 10393457
    Abstract: The present invention is an ammunition magazine, preferably made of a 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: August 10, 2018
    Date of Patent: August 27, 2019
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
  • Publication number: 20190086172
    Abstract: A magazine assembly for a firearm and a related method are disclosed. The assembly has a magazine housing defining a track, and a follower assembly. The magazine housing is configured to constrain a cartridge as the cartridge is moved within the magazine assembly such that majority of a proximal surface area of the cartridge does not contact the magazine housing, and a distal tip of the cartridge does not contact the magazine housing.
    Type: Application
    Filed: November 27, 2018
    Publication date: March 21, 2019
    Inventors: Timothy Eric Roberts, Michael T. Mayberry, Brian L. Nakayama, Richard M. Fitzpatrick, Eric Nakayama, William Bradley Bennett
  • Patent number: 10184741
    Abstract: A magazine assembly for a firearm and a related method are disclosed. The assembly has a magazine housing defining a track, and a follower assembly. The magazine housing is configured to constrain a cartridge as the cartridge is moved within the magazine assembly such that majority of a proximal surface area of the cartridge does not contact the magazine housing, and a distal tip of the cartridge does not contact the magazine housing.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: January 22, 2019
    Assignee: Magpul Industries Corp.
    Inventors: Timothy Eric Roberts, Michael T. Mayberry, Brian L. Nakayama, Richard M. Fitzpatrick, Eric Nakayama, William Bradley Bennett
  • Publication number: 20180347928
    Abstract: The present invention is an ammunition magazine, preferably made of a 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: August 10, 2018
    Publication date: December 6, 2018
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
  • Patent number: 10072903
    Abstract: The present invention is an ammunition magazine, preferably made of a 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: July 27, 2017
    Date of Patent: September 11, 2018
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
  • Patent number: 9915487
    Abstract: The present disclosure provides ammunition magazine casing and follower systems. The magazine casing may comprise a pair of spines running along a length of an interior rear wall of the magazine casing, the spines being raised in relation to other portions of the interior rear wall and stopping at a point in the magazine casing where an exterior geometry of the magazine casing changes from substantially curved to substantially straight.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: March 13, 2018
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
  • Publication number: 20170328659
    Abstract: The present invention is an ammunition magazine, preferably made of a 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: July 27, 2017
    Publication date: November 16, 2017
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
  • Patent number: 9746264
    Abstract: The present invention is an ammunition magazine, preferably made of a 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: February 26, 2015
    Date of Patent: August 29, 2017
    Assignee: Magpul Industries Corp.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
  • Patent number: 9702655
    Abstract: A system and method for a user's appendages when firing a weapon is described. One embodiment includes a cover kit for a firearm handguard. The kit has a base and an insert. The base has a longitudinal axis, an upright axis, a transverse axis, a socket, an exterior surface, and an interior surface. The insert has an insert body and a plug. The socket has a movable engagement prong shaped to engage a wall surface of a handguard slot. The plug has a prong engagement surface shaped to engage the engagement prong. The plug is shaped to apply a force on the engagement prong such that a distal portion of the engagement prong is flexed more than a proximal portion of the engagement prong.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: July 11, 2017
    Assignee: Magpul Industries Corp.
    Inventors: Brian L. Nakayama, Christopher F. Miller, Michael T. Mayberry, Nicholas Kielsmeier, Richard M. Fitzpatrick
  • Publication number: 20170097202
    Abstract: The present disclosure provides ammunition magazine casing and follower systems. The magazine casing may comprise a pair of spines running along a length of an interior rear wall of the magazine casing, the spines being raised in relation to other portions of the interior rear wall and stopping at a point in the magazine casing where an exterior geometry of the magazine casing changes from substantially curved to substantially straight.
    Type: Application
    Filed: July 11, 2016
    Publication date: April 6, 2017
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
  • Publication number: 20170067706
    Abstract: A magazine assembly for a firearm and a related method are disclosed. The assembly has a magazine housing defining a track, and a follower assembly. The magazine housing is configured to constrain a cartridge as the cartridge is moved within the magazine assembly such that majority of a proximal surface area of the cartridge does not contact the magazine housing, and a distal tip of the cartridge does not contact the magazine housing.
    Type: Application
    Filed: November 17, 2016
    Publication date: March 9, 2017
    Inventors: Timothy Eric Roberts, Michael T. Mayberry, Brian L. Nakayama, Richard M. Fitzpatrick, Eric Nakayama, William Bradley Bennett
  • Patent number: 9528784
    Abstract: A drum magazine assembly and methods are described. A drum assembly has a follower assembly, a drum body, a spring assembly, and a feed tower assembly. The follower assembly biases cartridges towards an exit of the feed tower assembly. The follower assembly has a plurality of dummy cartridges, the plurality of dummy cartridges having a leading dummy cartridge and a last dummy cartridge, and a plurality of links including a leading link and a last link. The last dummy cartridge rotates relative to the last link and the leading link, and the leading dummy cartridge has a bolt catch engagement feature.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: December 27, 2016
    Assignee: MAGPUL INDUSTRIES CORP.
    Inventors: Timothy Eric Roberts, Michael T. Mayberry, Brian L. Nakayama, Richard M. Fitzpatrick, Eric Nakayama, William Bradley Bennett
  • Patent number: 9389036
    Abstract: The present disclosure provides a method of creating a visible indicator upon a firearm magazine. The method may comprise fabricating a plurality of rectangular matrices of divots on an exterior surface of the magazine, the divots having concave surfaces, each matrix comprising a plurality of rows of divots and a plurality of columns of divots. A first divot of a first row is also a first divot of a first column, the first divot forming a substantially straight line with each other divot of the first column, and a first divot of a second row is also a second divot of the first column. The method may then comprise marking, with paint or ink, at least one of the divots.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: July 12, 2016
    Assignee: MAGPUL INDUSTRIES CORP.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
  • Publication number: 20160161206
    Abstract: A system and method for a user's appendages when firing a weapon is described. One embodiment includes a cover kit for a firearm handguard. The kit has a base and an insert. The base has a longitudinal axis, an upright axis, a transverse axis, a socket, an exterior surface, and an interior surface. The insert has an insert body and a plug. The socket has a movable engagement prong shaped to engage a wall surface of a handguard slot. The plug has a prong engagement surface shaped to engage the engagement prong. The plug is shaped to apply a force on the engagement prong such that a distal portion of the engagement prong is flexed more than a proximal portion of the engagement prong.
    Type: Application
    Filed: November 19, 2015
    Publication date: June 9, 2016
    Inventors: Brian L. Nakayama, Christopher F. Miller, Michael T. Mayberry, Nicholas Kielsmeier, Richard M. Fitzpatrick
  • Patent number: 9347720
    Abstract: A new interface for a magazine follower and floor plate is used to provide greater stability to the round stack and a more sturdy system overall. The floor plate is designed with two opposite legs, the rear being shorter than the front leg so as to facilitate travel throughout the magazine and clearing of accumulated dirt and debris. The floor plate, in one embodiment, utilizes a lock plate that is shaped and sized to become a shoe for the compressed spring and associated follower. In an alternate embodiment, the floor plate itself serves the purpose and, with provided teeth, directly fastens to the magazine casing at notches manufactured in the magazine wall for that purpose. Other enhancements to the magazine include at least one matrix of divots to provide a paint surface, an over-insertion stop and a lower rear geometry to aid in clearing debris and grit.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: May 24, 2016
    Assignee: MAGPUL INDUSTRIES, CORP.
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
  • Publication number: 20160109201
    Abstract: The present disclosure provides a method of creating a visible indicator upon a firearm magazine. The method may comprise fabricating a plurality of rectangular matrices of divots on an exterior surface of the magazine, the divots having concave surfaces, each matrix comprising a plurality of rows of divots and a plurality of columns of divots. A first divot of a first row is also a first divot of a first column, the first divot forming a substantially straight line with each other divot of the first column, and a first divot of a second row is also a second divot of the first column. The method may then comprise marking, with paint or ink, at least one of the divots.
    Type: Application
    Filed: December 22, 2015
    Publication date: April 21, 2016
    Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
  • Publication number: 20160102931
    Abstract: A drum magazine assembly and methods are described. A drum assembly has a follower assembly, a drum body, a spring assembly, and a feed tower assembly. The follower assembly biases cartridges towards an exit of the feed tower assembly. The follower assembly has a plurality of dummy cartridges, the plurality of dummy cartridges having a leading dummy cartridge and a last dummy cartridge, and a plurality of links including a leading link and a last link. The last dummy cartridge rotates relative to the last link and the leading link, and the leading dummy cartridge has a bolt catch engagement feature.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 14, 2016
    Inventors: Timothy Eric Roberts, Michael T. Mayberry, Brian L. Nakayama, Richard M. Fitzpatrick, Eric Nakayama, William Bradley Bennett
  • Patent number: 9222749
    Abstract: A system and method for a user's appendages when firing a weapon is described. One embodiment includes a cover kit for a firearm handguard. The kit has a base and an insert. The base has a longitudinal axis, an upright axis, a transverse axis, a socket, an exterior surface, and an interior surface. The insert has an insert body and a plug. The socket has a movable engagement prong shaped to engage a wall surface of a handguard slot. The plug has a prong engagement surface shaped to engage the engagement prong. The plug is shaped to apply a force on the engagement prong such that a distal portion of the engagement prong is flexed more than a proximal portion of the engagement prong.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: December 29, 2015
    Assignee: MAGPUL INDUSTRIES, CORP.
    Inventors: Brian L. Nakayama, Christopher F. Miller, Michael T. Mayberry, Nicholas Kielsmeier, Richard M. Fitzpatrick
  • Patent number: D780738
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: March 7, 2017
    Assignee: MAGPUL INDUSTRIES CORP.
    Inventors: Grady Barfoot, Richard M. Fitzpatrick, Michael T. Mayberry
  • Patent number: D796617
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: September 5, 2017
    Assignee: Magpul Industries Corp.
    Inventors: Eric Chow, Michael T. Mayberry, Richard M. Fitzpatrick