Von B Davis

US Patent:

20190128625, May 2, 2019

Filed:

Dec 27, 2018

Appl. No.:

16/233586

Inventors:

- Columbia MO, US
Tyson Bradshaw - Boonville MO, US
Von Davis - Columbia MO, US
Jordan Wilson - Columbia MO, US

Assignee:

22 Evolution LLC - Columbia MO

International Classification:

F41A 3/26
F41A 3/82
F41A 19/30
F41A 3/30

Abstract:

A delayed rotary blowback mechanism integrated into a firearm bolt and carrier subassembly. A plurality of lugs are configured at a rear of the bolt and seat within a mating profile of a barrel extension of the firearm in a fully chambered position. Chamfered locations are configured between the lugs and a receiving profile in the barrel extension for influencing linear to rotational motion of the bolt. A cam pin extends upwardly from the bolt and seats through a circumferentially directed slot configured within the bolt carrier. Upon initiating of the discharge cycle of a fired round traveling out the end of the barrel, the chamfered configuration results in the bolt and cam pin rotating within the carrier and the lugs subsequently separating from the barrel extension. The bolt and carrier retain sufficient inertia to cycle through the discharge cycle concurrent with reloading a subsequent cartridge.

US Patent:

20180142972, May 24, 2018

Filed:

Oct 24, 2017

Appl. No.:

15/791595

Inventors:

- Columbia MO, US
Tyson Bradshaw - Kirksville MO, US
Von Davis - Columbia MO, US
Jordan Wilson - Columbia MO, US

International Classification:

F41A 3/26
F41A 3/82
F41A 3/30

Abstract:

A delayed rotary blowback mechanism integrated into a firearm bolt and carrier subassembly. A plurality of radial locking lugs are configured at a rear end of the bolt and seat within a mating profile of a barrel extension of the firearm in a fully chambered position. A plurality of chamfered locations are configured between the lugs and a receiving profile in the barrel extension for influencing linear to rotational motion of the bolt. A cam pin extends upwardly from the bolt and seats through a circumferentially directed slot configured within the bolt carrier. Upon initiating of the discharge cycle, signaled by the round traveling through and out the end of the barrel, the chamfered configuration results in the bolt and cam pin rotating within the carrier and the lugs subsequently separating from the barrel extension, with the bolt and associated carrier retaining sufficient inertia to cycle through the discharge cycle to the set position concurrent with reloading a subsequent cartridge.

US Patent:

20170160032, Jun 8, 2017

Filed:

Dec 1, 2016

Appl. No.:

15/366771

Inventors:

- Columbia MO, US
Tyson Bradshaw - Kirksville MO, US
Von Davis - Columbia MO, US
Jordan Wilson - Columbia MO, US

International Classification:

F41A 17/36
F41A 3/66

Abstract:

A bolt hold open linkage incorporated into a lower receiver of a firearm for elevating a bolt catch into contact with a forwardly displacing bolt associated with an upper receiver reciprocating action assembly. An elongated central stem has a forward end and an opposite rearward end, a shoulder being supported, via an extending portion, from the rearward end. A pair of axially aligning mounting pins are supported at spaced apart locations of the lower receiver above a magazine receiving well incorporated into the lower receiver, the pins mounting the opposite ends in pivoting fashion about a centerline extending between the axially aligning pins which is offset from the shoulder. Upon an upwardly displaceable follower, associated with a magazine which is secured to the well, being adapted to elevate into contact with the linkage at a location offset from the axial centerline, the shoulder actuating in a combined pivoting and elevating fashion and adapted to contact and elevate the bolt catch for intercepting the forwardly displacing bolt.