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US 11,378,347 B2Granted
Buffer with magnetic bias
AssigneeBravo Company Mfg, Inc.
InventorsEric Stephen Kincel, Jeffrey James O'Brien
Life of this patent
Estimating the term…
Abstract
A buffer assembly for a firearm includes an internal assembly comprising a plurality of weights within a buffer body of a buffer and at least one magnet. The magnet at least partially offsets an inertial event that occurs during a firing action of the firearm.
Claims25
A buffer assembly for a firearm, the buffer assembly comprising:
- a buffer tube including a closed rear end;
- an action spring in the tube;
- and
- a buffer in the tube and engaging the action spring, the buffer including a buffer body that is moveably biased within the buffer tube via the action spring, the buffer body defining an internal buffer cavity, a rear end cap covering a rear end of the buffer body, a front end cap covering a front end of the buffer body, and an internal assembly within the buffer cavity, the internal assembly comprising at least one weight, a first magnet and a second magnet;
- wherein a magnetic repelling force between the first magnet and the second magnet biases the weight to an at-rest position within the internal assembly;
- and
- wherein in response to an inertial event the at least one weight overcomes the bias of the magnetic repelling force to achieve a dead-blow condition to at least partially offset an effect of the inertial event.
4 more elements
A firing assembly for a firearm, the firing assembly comprising:
- a bolt carrier movable in a rearward stroke and a forward stroke as part of a firing and loading action of the firearm;
- and
- a buffer assembly including a buffer tube including a closed rear end, an action spring in the tube, and a buffer in the tube and engaging the action spring, the buffer including a buffer body defining an internal buffer cavity, a rear end cap covering a rear end of the buffer body, a front end cap engaged with the bolt carrier, and an internal assembly within the buffer cavity, the internal assembly comprising at least one weight, a first magnet, and a second magnet;
- wherein a magnetic repelling force between the first magnet and the second magnet biases the weight to an at-rest position within the internal assembly;
- wherein the buffer is driven in rearward and forward strokes corresponding to the rearward and forward strokes of the bolt carrier and under the influence of respective rearward motion of the bolt carrier and a forward biasing force of the action spring;
- wherein as a result of at least one of the rearward and forward strokes, at least one inertial event occurs;
- wherein in response to the inertial event the at least one weight overcomes the bias of the magnetic repelling force to achieve a dead-blow condition to at least partially offset an effect of the inertial event.
4 more elements
A method of at least partially offsetting an inertial event in a firing assembly of a firearm, the method comprising:
- evaluating an inertial event of a buffer assembly in a firearm, the buffer assembly having a buffer body, with at least one weight moveable within an internal space of the buffer body, and a first magnet and a second magnet that interact with each other to create a magnetic repelling force that biases the weight to an at-rest position in the internal space, wherein in response to the inertial event the at least one weight overcomes the bias of the magnetic repelling force to achieve a dead-blow condition to at least partially offset an effect of the inertial event, and wherein the magnetic repelling force adjusts a magnitude of an impact force arising from the dead-blow condition and establishes a delay interval between the occurrence of the inertial event and to the occurrence of the dead-blow condition;
- determining an impact force that is a minimizing impact force and a delay interval that is a minimizing delay interval such that the minimizing impact force and minimizing delay interval combination at least partially offset the inertial event;
- and
- adjusting properties of the components of the firearm to achieve the minimizing impact force and the minimizing delay interval combination.
1 more element
A firing assembly for a firearm, the firing assembly comprising:
- a bolt carrier movable in a rearward stroke and a forward stroke as part of a firing and loading action of the firearm;
- and
- a buffer assembly including a buffer tube including a closed rear end, an action spring in the tube, and a buffer in the tube and engaging the action spring, the buffer including a buffer body defining an internal buffer cavity, a rear end cap covering a rear end of the buffer body, a front end cap engaged with the bolt carrier, and an internal assembly within the buffer cavity, the internal assembly comprising at least one weight and a magnet;
- wherein a magnetic attracting force between the magnet and the bolt carrier biases the bolt carrier and the buffer towards each other;
- wherein the buffer is driven in rearward and forward strokes corresponding to the rearward and forward strokes of the bolt carrier and under the influence of respective rearward motion of the bolt carrier and a forward biasing force of the action spring;
- wherein as a result of at least one of the rearward and forward strokes, at least one inertial event occurs;
- wherein during the inertial event, the magnetic attracting force biases the bolt carrier and the buffer towards each other to at least partially offset an effect of the inertial event.
4 more elements
Dependencies are inferred from the claim text.