Patents by Inventor Brian L. Nakayama
Brian L. Nakayama 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).
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Patent number: 8839543Abstract: 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: GrantFiled: December 5, 2013Date of Patent: September 23, 2014Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
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Publication number: 20140215878Abstract: 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: ApplicationFiled: December 5, 2013Publication date: August 7, 2014Applicant: Magpul Industries CorpInventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
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Patent number: 8635796Abstract: 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: GrantFiled: November 30, 2011Date of Patent: January 28, 2014Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
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Publication number: 20130305579Abstract: The present invention is a fixed stock with integral storage that utilizes a cam plug inside the storage compartment to secure the stock to a firearm. In the preferred embodiment, the cam plug interfaces with the hind edge of the stock body and is therefore visible outside the stock, for a stronger and more secure hold.Type: ApplicationFiled: May 15, 2013Publication date: November 21, 2013Applicant: MAGPUL INDUSTRIESInventors: Thomas Ward, Michael T. Mayberry, Brian L. Nakayama
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Patent number: 8544704Abstract: The disclosed invention is a threader for use with various modular tactical vest systems. The particular modular vest systems have a weaving interface with attachable storage modules. A strap on a module is attached to the threader and the threader is woven through the support web on the vest. As the threader is pulled through the support web, the module is secured to the vest. Two embodiments for attaching the strap to the threader are disclosed.Type: GrantFiled: February 9, 2006Date of Patent: October 1, 2013Assignee: Magpul Industries CorpInventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric S. Nakayama
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Patent number: 8539871Abstract: A non-reciprocating, self-engaging charging handle is disclosed. It comprises a forward latch mounted upon a sliding body with a protruding handle. The latch positively engages the firearm's bolt carrier group when the handle is brought forward into contact therewith. A secondary latching system secures the charging handle to the upper receiver when not in use and disengages automatically when and only when a user desires to operate the handle. The charging handle's secondary latching system is also claimed as a stand-alone system.Type: GrantFiled: November 13, 2012Date of Patent: September 24, 2013Assignee: Magpul Industries CorpInventors: Eric C. Burt, Brian L. Nakayama, Richard M. Fitzpatrick, Michael T. Mayberry
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Publication number: 20130228065Abstract: A non-reciprocating, self-engaging charging handle is disclosed. It comprises a forward latch mounted upon a sliding body with a protruding handle. The latch positively engages the firearm's bolt carrier group when the handle is brought forward into contact therewith. A secondary latching system secures the charging handle to the upper receiver when not in use and disengages automatically when and only when a user desires to operate the handle. The charging handle's secondary latching system is also claimed as a stand-alone system.Type: ApplicationFiled: November 13, 2012Publication date: September 5, 2013Applicant: MAGPUL INDUSTRIES CORP.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric C. Burt, Brian L. Nakayama
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Publication number: 20130180146Abstract: 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: ApplicationFiled: January 17, 2013Publication date: July 18, 2013Applicant: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
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Publication number: 20120317857Abstract: 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: ApplicationFiled: November 30, 2011Publication date: December 20, 2012Applicant: MAGPUL INDUSTRIES CORP.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
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Patent number: 8307747Abstract: A non-reciprocating, self-engaging charging handle is disclosed. It comprises a spring biased forward latch mounted upon a sliding body with a protruding handle. The spring bias causes the latch to positively engage the firearm's bolt carrier group when the handle is brought forward into contact therewith. A secondary latching system secures the charging handle to the upper receiver when not in use and disengages automatically when and only when a user desires to operate the handle.Type: GrantFiled: January 19, 2011Date of Patent: November 13, 2012Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric C. Burt, Brian L. Nakayama
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Patent number: 8261649Abstract: The present invention is a charging handle for an automatic, bolt actuated rifle. The handle features a ratcheting retraction assist and blowback diversion structures.Type: GrantFiled: February 9, 2007Date of Patent: September 11, 2012Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Brian L. Nakayama, Eric S. Nakayama
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Patent number: 8166692Abstract: 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: GrantFiled: May 3, 2010Date of Patent: May 1, 2012Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric S. Nakayama
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Publication number: 20110302816Abstract: 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: ApplicationFiled: January 15, 2009Publication date: December 15, 2011Applicant: MAGPUL INDUSTRIES CORP.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
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Patent number: 8069601Abstract: 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: GrantFiled: January 15, 2009Date of Patent: December 6, 2011Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric C. Burt
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Publication number: 20110253756Abstract: The disclosed invention is a threader for use with various modular tactical vest systems. The particular modular vest systems have a weaving interface with attachable storage modules. A strap on a module is attached to the threader and the threader is woven through the support web on the vest. As the threader is pulled through the support web, the module is secured to the vest. Two embodiments for attaching the strap to the threader are disclosed.Type: ApplicationFiled: February 9, 2006Publication date: October 20, 2011Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric S. Nakayama
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Publication number: 20110226120Abstract: The present invention is a charging handle for an automatic, bolt actuated rifle. The handle features a ratcheting retraction assist and blowback diversion structures.Type: ApplicationFiled: February 9, 2007Publication date: September 22, 2011Applicant: MAGPUL INDUSTRIES CORP.Inventors: Richard M. Fitzpatrick, Brian L. Nakayama, Eric S. Nakayama
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Publication number: 20110113663Abstract: 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: ApplicationFiled: May 3, 2010Publication date: May 19, 2011Applicant: Magpul Industries Corp.Inventors: Brian L. Nakayama, Eric S. Nakayama, Richard M. Fitzpatrick, Michael T. Mayberry
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Patent number: D644293Type: GrantFiled: May 3, 2010Date of Patent: August 30, 2011Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
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Patent number: D645113Type: GrantFiled: May 3, 2010Date of Patent: September 13, 2011Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama
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Patent number: D667915Type: GrantFiled: May 10, 2011Date of Patent: September 25, 2012Assignee: Magpul Industries Corp.Inventors: Brian L. Nakayama, Eric C. Burt