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US 9,097,478 B1Granted
Bolt mechanisms and firearms containing the same
OwnerTheodore Karagiasinventor
Life of this patent
Estimating the term…
Abstract
A firearm includes a bolt mechanism with a bolt configured to receive a firing pin assembly and a bolt head assembly. The bolt head assembly includes a pivoting bolt head and an extractor. The extractor is positioned relative to the bolt such that substantially all forces applied by the extractor to the bolt mechanism are reacted within the bolt head assembly. A biasing member or element can urge a claw portion of extractor towards a distal end of the bolt head.
Claims26
A bolt mechanism for a firearm, comprising;
- a bolt configured to receive a firing pin assembly and having a longitudinal axis;
- and
- a bolt head assembly coupled to an end of the bolt and including an extractor and a floating bolt head, wherein the bolt is rotatable relative to the extractor such that the bolt mechanism moves from a closed position to an open position while the extractor does not rotate about a longitudinal axis of the bolt mechanism when the bolt mechanism is installed in the firearm, wherein the floating bolt head is rotatable about two axes of rotation relative to the bolt, and wherein the two axes of rotation are substantially perpendicular to the longitudinal axis of the bolt.
A bolt mechanism for a firearm, comprising:
- a bolt;
- and
- a bolt head assembly including
- a bolt head,
- a pin pivotally coupling the bolt head to the bolt such that the bolt head is rotatable about two axes of rotation relative to the bolt, wherein the bolt head and the bolt rotate together about a longitudinal axis of the bolt when the bolt mechanism is moved from a closed position to an open position while the bolt mechanism is positioned in the firearm,
- an extractor collar,
- an extractor claw portion rotatable coupled to the collar and configured to engage a shell of a cartridge wherein the extractor claw portion is non-rotatable about the longitudinal axis of the bolt about which the bolt rotates when the bolt mechanism is moved from the closed position to the open position so as to rotate the bolt head relative to the extractor collar, and
- a biasing member that biases the extractor claw portion towards the bolt head.
5 more elements
A firearm, comprising:
- a main body;
- and
- a bolt mechanism housed in the main body and comprising
- a bolt having a longitudinal axis;
- and
- a bolt head assembly coupled to the bolt and including
- a floating bolt head rotatable about two axes of rotation relative to the longitudinal axis of the bolt, wherein the two axes of rotation are substantially perpendicular to the longitudinal axis, and
- an extractor that is non-rotating about the longitudinal axis of the bolt when the bolt mechanism moves from a closed position to an open position, and wherein substantially all forces applied by the extractor to the bolt mechanism are reacted within the bolt head assembly while the bolt mechanism is positioned in the firearm.
5 more elements
A firearm, comprising:
- a main body with a receiver;
- and
- a bolt mechanism housed in the main body and including—
- a bolt having a longitudinal axis and a hollow end;
- and
- a bolt head assembly coupled to the hollow end and including
- an extractor assembly including a collar, an extractor, and a pin rotatably coupling the extractor to the collar, wherein the extractor is non-rotating about the longitudinal axis of the bolt when the bolt mechanism is moved from a closed position to an open position, and
- a bolt head rotatable about at least two bolt head axes of rotation that are substantially perpendicular to the longitudinal axis of the bolt, wherein the bolt head includes a pin portion and a head portion, wherein the pin portion extends through the collar and into the hollow end of the bolt, wherein the collar is between the two bolt head axes of rotation and the head portion such that substantially all forces applied by the extractor assembly to the bolt mechanism are reacted within the bolt head assembly.
5 more elements
Dependencies are inferred from the claim text.