Bolt head for a firearm
AssigneeGlock Technology Cmbh
InventorKarl Markut
Life of this patent
Estimating the term…
Abstract
Firearms and bolt carriers having a bolt head including a bolt head axis and a plurality of locking lugs, wherein at least two recesses having a radius, measured with respect to the bolt head axis, are formed on the bolt head between at least two adjacent locking lugs. To improve the guidance of the bolt head, at least two centering ramps, which are designed obliquely to the bolt head axis and protrude in the axial direction toward the rear up to a central radius that is greater than the radius, for self-centering the bolt head during the bolt process are formed in the region of the recesses.
Claims26
A bolt head for a firearm having a bolt head axis and a plurality of locking lugs, the bolt head defining at least two recesses between at least two adjacent locking lugs, the at least two recesses having a recess radius as measured with respect to the bolt head axis;
- wherein the bolt head defines at least two centering ramps formed in a region of the at least two recesses so that the centering ramps extend obliquely to the bolt head axis and extend in an axial direction toward a rear of the bolt head up to a central radius that is greater than the recess radius, such that the at least two centering ramps aid in a self-centering of the bolt head during a locking process;
- and
- wherein at least one alignment surface forms a continuous ring around the bolt head;
- or the at least one alignment surface is interrupted by a plurality of flattened portions, with each flattened portion extending along a tangent of the bolt head axis.
A bolt carrier for a firearm, comprising:
- a bolt head having a bolt head axis, a plurality of locking lugs, and a cam pin;
- wherein
- the bolt head defines at least two recesses between at least two adjacent locking lugs, the at least two recesses having a recess radius as measured with respect to the bolt head axis;
- the bolt head defines at least two centering ramps formed in a region of the at least two recesses so that the centering ramps extend obliquely to the bolt head axis and extend in an axial direction toward a rear of the bolt head up to a central radius that is greater than the recess radius, such that the at least two centering ramps aid in a self-centering of the bolt head during a locking process;
- and
- the bolt head defines a cam pin bore transverse to the bolt head axis that is configured to receive the cam pin;
- wherein the cam pin has a tapered end to be inserted into the cam pin bore of the bolt head;
- the tapered end of the cam pin includes at least one step;
- and the cam pin bore is shape-complementary to the tapered end of the cam pin.
A firearm comprising a bolt carrier, wherein the bolt carrier includes:
- a bolt head having a bolt head axis, a plurality of locking lugs, and a cam pin;
- wherein
- the bolt head defines at least two recesses between at least two adjacent locking lugs, the at least two recesses having a recess radius as measured with respect to the bolt head axis;
- the bolt head defines at least two centering ramps formed in a region of the at least two recesses so that the centering ramps extend obliquely to the bolt head axis and extend in an axial direction toward a rear of the bolt head up to a central radius that is greater than the recess radius, such that the at least two centering ramps aid in a self-centering of the bolt head during a locking process;
- and
- the bolt head defines a cam pin bore transverse to the bolt head axis that is configured to receive the cam pin;
- wherein the cam pin has a tapered end to be inserted into the cam pin bore of the bolt head;
- the tapered end of the cam pin includes at least one step;
- and the cam pin bore is shape-complementary to the tapered end of the cam pin.
Dependencies are inferred from the claim text.