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US 9,372,048 B1Granted
Ballistic system and method for cutting a multi-link metal chain
OwnerDarron Phillips, Mark Ferris +1inventors
InventorsDarron Phillips, Mark Ferris, Bert Vermeulen
Life of this patent
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Abstract
A system and method for ballistically cutting a multi-link metal chain comprises a chain alignment module that comprises three pins and attaches to the barrel of a firearm. A first pin and a second pin of the module fit on opposite sides of a target link of the chain. A third pin of the alignment module goes through a link adjacent to the target link of the chain. The three pins align the target link so that a bullet exiting the barrel of a firearm impacts a semicircular region of the target link to cause the target link to open.
Claims20
A system for ballistically opening a target link of a multi-link metal chain, the system comprising:
- a firearm attachment feature wherein:
- the firearm attachment feature detachably attaches to a firearm to align the system with the path of a bullet exiting a barrel of the firearm;
- and
- a chain alignment module comprising:
- a first target link pin configured to sit on one side of the target link;
- a second target link pin configured to sit on the other side of the target link;
- a first adjacent link engagement feature located on a side of the first target link pin facing the barrel and a second adjacent link engagement feature located on a side of the second target link pin facing the barrel wherein:
- the first adjacent link engagement feature comprises a first adjacent link engagement flat region;
- the second adjacent link engagement feature comprises a second adjacent link engagement flat region;
- the first flat region is coplanar with the second flat region;
- and
- the first flat region and the second flat region are configured for engaging with an adjacent link wherein the adjacent link is a link on the multi-link metal chain located adjacent to the target link and rotated 90 degrees from the target link;
- a slot between the first target link pin and the second target link pin wherein:
- the slot comprises a first target link sidewall located on a side of the first target link pin and a second target link sidewall located on a side of the second target link pin;
- the first sidewall comprises a first flat surface;
- the second sidewall comprises a second flat surface;
- the first flat surface is parallel to the second flat surface;
- the midplane defined by the plane midway between the first flat surface and the second flat surface is coplanar with a barrel axis defined by the center of the barrel;
- and
- the slot is configured for placement of the target link between the first flat surface and the second flat surface;
- and
- an adjacent link pin configured to go through a central open region of the adjacent link, wherein:
- the adjacent link pin comprises a target link engagement surface located on a side of the adjacent link pin facing an end of the barrel, wherein the target link engagement surface is configured as a stop for a semicircular end of the target link;
- the adjacent link pin further comprises a first adjacent link pin side and a second adjacent link pin side;
- the first adjacent link pin side and the second adjacent link pin side are on opposite sides of the adjacent link pin;
- the first adjacent link pin side is parallel to the second adjacent link pin side;
- the first adjacent link pin side and the second adjacent link pin side are parallel to the first flat surface and the second flat surface;
- and
- the first adjacent link pin side and the second adjacent link pin side are configured for passing through the central open region;
- whereby the first target link pin, the second target link pin, and the adjacent link pin are shaped and positioned relative to the firearm attachment feature so the path of the bullet impacts a central plane of the semicircular end of the target link.
27 more elements
A system for ballistically cutting a multi-link metal chain, the system comprising:
- a firearm attachment feature wherein:
- the firearm attachment feature detachably attaches to the barrel of a firearm to align the system with the path of a bullet exiting the firearm;
- and
- a chain alignment module comprising a first pin, a second pin, and a third pin, wherein:
- the gap between the first pin and the second pin facilitates alignment of a target link of the metal chain, wherein:
- the gap comprises a first surface located on the first pin and a second surface located on the second pin;
- and
- the mid-plane of the first surface and the second surface is coplanar with the path of the bullet;
- the third pin fits through the center of a link adjacent to the target link;
- the third pin comprises a target link engagement surface for positioning a semicircular region of the target link with the path of the bullet;
- the first pin comprises a first feature for engaging the link adjacent to the target link;
- the second pin comprises a second feature for engaging the link adjacent to the target link;
- and
- the first feature and the second feature are parallel.
11 more elements
A method for ballistic cutting of a multi-link metal chain, the method comprising the steps of:
- establishing a fixture comprising three rigid pins;
- aligning the fixture with the path of a bullet exiting a firearm proximate to the point where the bullet exits the barrel of the firearm;
- placing a target link of the multi-link metal chain between a first pin and a second pin;
- placing a second link over a third pin, wherein the second link comprises a link adjacent to the target link;
- and
- wherein placing the target link and placing the second link further comprise placing the target link in a location so that the path of the bullet impacts the target link in a semicircular region of the target link at an angle of incidence that causes the target link to open.
3 more elements
Dependencies are inferred from the claim text.