Patents by Inventor Eric S. Nakayama
Eric S. 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: 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: 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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Patent number: 8061071Abstract: 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: GrantFiled: July 17, 2009Date of Patent: November 22, 2011Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Michael Morgan, Eric C. Burt, Eric S. Nakayama
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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: 7908780Abstract: 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: December 17, 2007Date of Patent: March 22, 2011Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael Mayberry, Eric S. Nakayama
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Publication number: 20100251590Abstract: 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: December 17, 2007Publication date: October 7, 2010Applicant: MAGPUL INDUSTRIES CORPInventors: Richard M. Fitzpatrick, Michael Mayberry, Eric S. Nakayama
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Publication number: 20100205846Abstract: 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: ApplicationFiled: February 8, 2008Publication date: August 19, 2010Applicant: MAGPUL INDUSTRIES CORPInventors: Richard M. Fitzpatrick, Michael T. Mayberry, Brian L. Nakayama, Eric S. Nakayama
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Patent number: 7762018Abstract: 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: GrantFiled: February 8, 2008Date of Patent: July 27, 2010Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric S. Nakayama, Brian L. Nakayama
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Publication number: 20100126053Abstract: 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: ApplicationFiled: July 17, 2009Publication date: May 27, 2010Applicant: MAGPUL INDUSTRIES CORP.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Michael Morgan, Eric C. Burt, Eric S. Nakayama
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Patent number: 7621063Abstract: 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: February 9, 2006Date of Patent: November 24, 2009Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric S. Nakayama
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Publication number: 20090107022Abstract: 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: February 9, 2006Publication date: April 30, 2009Applicant: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric S. Nakayama
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Patent number: D596693Type: GrantFiled: February 1, 2008Date of Patent: July 21, 2009Assignee: Magpul Industries Corp.Inventor: Eric S. Nakayama
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Patent number: D600771Type: GrantFiled: February 1, 2008Date of Patent: September 22, 2009Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Eric S. Nakayama, Brian L. Nakayama
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Patent number: D614721Type: GrantFiled: January 16, 2009Date of Patent: April 27, 2010Assignee: Magpul Industries Corp.Inventors: Richard M. Fitzpatrick, Michael T. Mayberry, Nick Booras, Brian L. Nakayama, Eric S. Nakayama, Justin Juarez
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Patent number: D779018Type: GrantFiled: January 11, 2016Date of Patent: February 14, 2017Assignee: Magpul Industries CorporationInventors: Richard A. Zayatz, Yehezkel Eitan, Jonathan Canipe, Eric S. Nakayama
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Patent number: D781392Type: GrantFiled: January 11, 2016Date of Patent: March 14, 2017Assignee: Magpul Industries CorporationInventors: Richard A. Zayatz, Yehezkel Eitan, Jonathan Canipe, Eric S. Nakayama