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公开(公告)号：US10663243B2
公开(公告)日：2020-05-26
申请号：US15203686
申请日：2016-07-06
申请人： David Rian Timmons
发明人： David Rian Timmons
摘要： A pivot pin is for engagement and/or disengagement from its position as a pivot axle and/or connector, for example, in a lower receiver of a firearm. The mostly cylindrical main body of the pivot pin includes a longitudinal detent track featuring at least one recessed dimple and an aperture extending radially through the track for transfer of a detent spring and detent pin through the main body into the detent chamber of the lower receiver. A capping device may then encapsulate/control the position of the detent pin relative to the detent chamber, and relative to the aperture and track of the pivot pin, and/or help reduce the migration of water and or debris into the detent track and/or the firearm.
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公开(公告)号：US10663239B2
公开(公告)日：2020-05-26
申请号：US15963800
申请日：2018-04-26
申请人： David Rian Timmons
发明人： David Rian Timmons
摘要： A takedown pin system may be used for the processes of securing, semi-securing, and/or un-securing the rear connection points of firearm lower and upper receivers, for example, of an AR-15, with an option to maintain axial engagement of the pin to the receivers throughout two or more of the processes. An enhanced pin detent track allows pin rotation when axially-engaged in the receivers. A narrow pin body portion, for example, a recessed side surface portion or a narrow flange, cooperates with the pin hole and/or a slot in an upper receiver rear knuckle. Rotating the pin may locate the recess or flange to make room between the pin and the inner surface(s) of the upper receiver pin hole so the upper receiver can pivot slightly open from the lower receiver. A slot at the bottom of the rear knuckle hole may receive a flange of the takedown pin.
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