The invention comprises an improved recoil control device comprising a bolt head and an inertia block for use in a variety of firearms. In one embodiment, the bolt head and inertia block are articulated so that the displacement of the bolt head results in a force component outside the firing axis of
The invention comprises an improved recoil control device comprising a bolt head and an inertia block for use in a variety of firearms. In one embodiment, the bolt head and inertia block are articulated so that the displacement of the bolt head results in a force component outside the firing axis of the barrel of the firearm. The device can be incorporated into firearms of a variety of sizes and configurations to produce recoil reduction and/or weight reduction advantages.
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1. A recoil control device in combination with a firearm having a barrel, the device comprising: a bolt head configured to alternate between a forward position within the axis of the barrel and a rearward position tilting out of the axis of the barrel, the alternating positions in response to the fi
1. A recoil control device in combination with a firearm having a barrel, the device comprising: a bolt head configured to alternate between a forward position within the axis of the barrel and a rearward position tilting out of the axis of the barrel, the alternating positions in response to the firing of one or more cartridges; andan inertia block positioned at the rearward end of the bolt head such that said bolt head imparts an impulse to the inertia block as the bolt head alternates between the forward position and the rearward position, the movement of the inertia block having a component lateral to or perpendicular to the firing axis of the barrel of the firearm, the inertia block having a first surface for receiving an impulse from the bolt head when the bolt head is at a forward position and the bolt head within the axis of the barrel, and the inertia block having a second surface for receiving an impulse from the bolt head as the bolt head moves to a rearward position and the inertia block advances to the end of its movement, wherein the first and second surfaces have different angles relative to the axis of the barrel. 2. The recoil control device of claim 1, wherein the bolt head is connected to the inertia block by a linkage. 3. The recoil control device of claim 1, wherein the linkage comprises a pin rod with a first end connected to the bolt head by a first spindle with a longitudinal axis perpendicular to the axis of the gun barrel, and a second end, opposite said first end, said second end connected to the inertia block by a second spindle with a longitudinal axis perpendicular to the axis of the gun barrel such that the impulse can be transmitted from the bolt head to the inertia block via the pin rod. 4. The recoil control device of claim 1, wherein the bolt head comprises a first leading surface sloped to make contact with a sloped surface on the inertia block in order to transmit said impulse. 5. The recoil control device of claim 1, further comprising a triggering mechanism for selectively imparting a return impulse to the bolt head to cause it to return to the forward position, thereby enabling precise, efficient control of the firing rate. 6. The recoil control device of claim 5, wherein the return impulse is selected from an electromechanical impulse and an electropneumatic impulse. 7. The recoil control device of claim 5, wherein the triggering mechanism prevents the bolt head from traveling past the rearward position. 8. The recoil control device of claim 1, further comprising a recovery mechanism for countering the movement of the inertia block. 9. The recoil control device of claim 8, wherein the recovery mechanism comprises a spring. 10. The recoil control device of claim 8, further comprising a triggering mechanism for selectively imparting a return impulse to the bolt head that permits the recovery mechanism to return the bolt head to the forward position, thereby enabling precise, efficient control of the firing rate. 11. The recoil control device of claim 10, wherein the triggering mechanism prevents the bolt head from traveling past the rearward position. 12. A recoil control device in combination with a semiautomatic or automatic firearm having a barrel, said device comprising: a mobile breech comprising a bolt head and an inertia block;the bolt head configured to alternate between a forward position and a rearward position in response to the percussion of one or more cartridges, the bolt head comprising a first leading surface sloped to make contact with a first sloped surface on the inertia block in order to transmit an impulse to the inertia block as it alternates between the forward position and the rearward position, the inertia block having both a first sloped surface and a second sloped surface to make contact the bolt head, and the movement of the bolt head at the rearward position tilts out of the axis of the barrel of the firearm. 13. The recoil control device of claim 12, further comprising a triggering mechanism for selectively imparting a return impulse to the bolt head to cause it to return to the forward position, thereby enabling precise, efficient control of the firing rate. 14. The recoil control device of claim 12, wherein the triggering mechanism prevents the bolt head from traveling past the rearward position. 15. The recoil control device of claim 12, wherein the bolt head is connected to the inertia block by a linkage. 16. The recoil control device of claim 15, wherein the linkage comprises a pin rod with a first end connected to the bolt head by a first spindle with a longitudinal axis perpendicular to the axis of the gun barrel, and a second end, opposite said first end, said second end connected to the inertia block by a second spindle with a longitudinal axis perpendicular to the axis of the gun barrel. 17. The recoil control device of claim 16, wherein the spindle linking the pin rod and the inertia block is housed between them, the pin rod having play in the longitudinal direction, said play enabling said mobile breech to be in extended configuration or in compact configuration, said play being sufficient to bring said first leading sloped surface on the bolt head in abutment with said second sloped surface on the inertia block whereby the mobile breech is placed in compact configuration. 18. The recoil control device of claim 17, wherein the pin rod presents a barrier corresponding to a ridge of the inertia block to maintain the mobile breech in extended configuration. 19. The recoil control device of claim 12, further comprising a bolt head guide, fixed in relation to the axis of the gun barrel and arranged such that the initial displacement of the bolt head from the forward position to the rearward position is executed in line with the axis of the gun barrel; and further comprising an inertia block guide fixed in relation to the axis of the gun barrel and arranged to guide the inertia block such that the movement of the inertia block responsive to the impulse comprises a component perpendicular to the axis of the gun barrel. 20. The recoil control device of claim 19, wherein the inertia block guide comprises a ramp sloped relative to the axis of the gun barrel. 21. The recoil control device of claim 12, further comprising a recovery mechanism for countering the movement of the inertia block. 22. The recoil control device of claim 21, wherein the recovery mechanism comprises a spring. 23. The recoil control device of claim 21, wherein movement of the inertia block is guided by a ramp arranged at a slope in relation to the gun barrel.
Gregory Glenn D. (5059 San Aquario Dr. San Diego CA 92109) Gilbert Wayne E. (12919 Corte Juana Poway CA 92064), Recoil reduction device including means for adjusting the stock length of shotguns.
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