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公开(公告)号：US10247501B2
公开(公告)日：2019-04-02
申请号：US15798212
申请日：2017-10-30
发明人： Charles Chang , Emil Chao
摘要： A firearm and a kit for modifying a firearm is provided. The firearm has an upper receiver, a lower receiver, and a releasable magazine that releases when the upper receiver rotates away from the lower receiver. The firearm further has a firing pin with a striking end that has a cylindrical shape and a substantially sharp shoulder. A hammer is also provided with a depression disposed in a front surface thereof, the front surface configured to strike the striking end of the firing pin when the upper receiver is next to the lower receiver, and the depression configured to align with the striking end of the firing pin when the upper receiver rotates away from the lower receiver.
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公开(公告)号：US10239170B2
公开(公告)日：2019-03-26
申请号：US15636603
申请日：2017-06-28
发明人： Charles Chang , Emil Chao
摘要： A gun smith platform includes a top plate. The top plate has a tool hole centrally disposed on the top plate that extends through the top plate through which a work piece attached to a work tool mounted to a bottom side of the top plate may extend, a plurality of alignment holes extending in a linear pattern from the tool hole, the alignment holes configured to receive alignment pins, at least one row of threaded mounting holes disposed parallel to the linear pattern of alignment holes, and a recessed track disposed parallel to the at least one row of threaded mounting holes. Four legs are attached to and supporting the top plate.
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公开(公告)号：US10066888B2
公开(公告)日：2018-09-04
申请号：US15909901
申请日：2018-03-01
发明人： Charles Chang , Emil Chao
摘要： A firearm and a jig for modifying or constructing a firearm with a locking magazine release button is provided. The firearm has a lower receiver including a magazine locking pin aperture disposed in an upper surface thereof where the magazine locking aperture intersects with a magazine release button aperture in a side surface of the lower receiver. The firearm also has an upper receiver attached to the lower receiver via a pivot pin, a magazine attachable to the lower receiver, a magazine locking pin inserted into the magazine locking pin aperture, and a magazine release button comprising a recessed locking catch. The magazine release button releases the magazine when the upper receiver is away from the lower and the pin is not in the magazine locking aperture. The button is inoperable when the upper receiver is next to the lower receiver and the pin engages the locking catch.
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公开(公告)号：US09945631B2
公开(公告)日：2018-04-17
申请号：US15653474
申请日：2017-07-18
发明人： Charles Chang , Emil Chao
摘要： A firearm and a jig for modifying or constructing a firearm with a locking magazine release button is provided. The firearm has a lower receiver including a magazine locking pin aperture disposed in an upper surface thereof where the magazine locking aperture intersects with a magazine release button aperture in a side surface of the lower receiver. The firearm also has an upper receiver attached to the lower receiver via a pivot pin, a magazine attachable to the lower receiver, a magazine locking pin inserted into the magazine locking pin aperture, and a magazine release button comprising a recessed locking catch. The magazine release button releases the magazine when the upper receiver is away from the lower and the pin is not in the magazine locking aperture. The button is inoperable when the upper receiver is next to the lower receiver and the pin engages the locking catch.
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公开(公告)号：US20190168346A1
公开(公告)日：2019-06-06
申请号：US16265750
申请日：2019-02-01
发明人： Charles Chang , Emil Chao
摘要： A jig for finishing a workpiece with a handheld router or other handheld motor-driven rotational tool assembly is provided. The jig includes a baseplate that is precisely aligned and attached to a router. Guides, including a main guide and a support guide, are provided. The main guide is configured to precisely align with and fasten to the base plate in several different jig configurations. Right-angle adaptors attach to the guides and precisely align with and attach to the guides and the base plate to form several different jig configurations. Side plates secure the workpiece therebetween and provide a surface along which the main guide may slide to facilitate finishing operations on the workpiece.
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公开(公告)号：US20180231341A1
公开(公告)日：2018-08-16
申请号：US15909879
申请日：2018-03-01
发明人： Charles Chang , Emil Chao
摘要： A firearm and a jig for modifying or constructing a firearm with a locking magazine release button is provided. The firearm has a lower receiver including a magazine locking pin aperture disposed in an upper surface thereof where the magazine locking aperture intersects with a magazine release button aperture in a side surface of the lower receiver. The firearm also has an upper receiver attached to the lower receiver via a pivot pin, a magazine attachable to the lower receiver, a magazine locking pin inserted into the magazine locking pin aperture, and a magazine release button comprising a recessed locking catch. The magazine release button releases the magazine when the upper receiver is away from the lower and the pin is not in the magazine locking aperture. The button is inoperable when the upper receiver is next to the lower receiver and the pin engages the locking catch.
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公开(公告)号：US20180017347A1
公开(公告)日：2018-01-18
申请号：US15653474
申请日：2017-07-18
发明人： Charles Chang , Emil Chao
摘要： A firearm and a jig for modifying or constructing a firearm with a locking magazine release button is provided. The firearm has a lower receiver including a magazine locking pin aperture disposed in an upper surface thereof where the magazine locking aperture intersects with a magazine release button aperture in a side surface of the lower receiver. The firearm also has an upper receiver attached to the lower receiver via a pivot pin, a magazine attachable to the lower receiver, a magazine locking pin inserted into the magazine locking pin aperture, and a magazine release button comprising a recessed locking catch. The magazine release button releases the magazine when the upper receiver is away from the lower and the pin is not in the magazine locking aperture. The button is inoperable when the upper receiver is next to the lower receiver and the pin engages the locking catch.
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公开(公告)号：US20170368652A1
公开(公告)日：2017-12-28
申请号：US15636603
申请日：2017-06-28
发明人： Charles Chang , Emil Chao
摘要： A gun smith platform includes a top plate. The top plate has a tool hole centrally disposed on the top plate that extends through the top plate through which a work piece attached to a work tool mounted to a bottom side of the top plate may extend, a plurality of alignment holes extending in a linear pattern from the tool hole, the alignment holes configured to receive alignment pins, at least one row of threaded mounting holes disposed parallel to the linear pattern of alignment holes, and a recessed track disposed parallel to the at least one row of threaded mounting holes. Four legs are attached to and supporting the top plate.
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公开(公告)号：US10066887B1
公开(公告)日：2018-09-04
申请号：US15909879
申请日：2018-03-01
发明人： Charles Chang , Emil Chao
摘要： A firearm and a jig for modifying or constructing a firearm with a locking magazine release button is provided. The firearm has a lower receiver including a magazine locking pin aperture disposed in an upper surface thereof where the magazine locking aperture intersects with a magazine release button aperture in a side surface of the lower receiver. The firearm also has an upper receiver attached to the lower receiver via a pivot pin, a magazine attachable to the lower receiver, a magazine locking pin inserted into the magazine locking pin aperture, and a magazine release button comprising a recessed locking catch. The magazine release button releases the magazine when the upper receiver is away from the lower and the pin is not in the magazine locking aperture. The button is inoperable when the upper receiver is next to the lower receiver and the pin engages the locking catch.
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公开(公告)号：US10940570B2
公开(公告)日：2021-03-09
申请号：US16265750
申请日：2019-02-01
发明人： Charles Chang , Emil Chao
IPC分类号： B23Q3/06 , B23Q3/00 , B25H1/00 , B25H1/02 , B25H1/10 , B23C3/13 , F41C3/00 , B25H1/08 , B23C3/00 , B23B47/28 , F41A29/00 , F41A3/66
摘要： A jig for finishing a workpiece with a handheld router or other handheld motor-driven rotational tool assembly is provided. The jig includes a baseplate that is precisely aligned and attached to a router. Guides, including a main guide and a support guide, are provided. The main guide is configured to precisely align with and fasten to the base plate in several different jig configurations. Right-angle adaptors attach to the guides and precisely align with and attach to the guides and the base plate to form several different jig configurations. Side plates secure the workpiece therebetween and provide a surface along which the main guide may slide to facilitate finishing operations on the workpiece.
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