Rotatable firearm bolt assembly and firearms including the same
AssigneeDewalch Fm, LLC
InventorNorman Binz DeWalch
Life of this patent
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Abstract
Firearm bolt assemblies and firearms including the same are described. In embodiments the firearm bolt assemblies are configured to localize compressive forces applied during a transition from an initial position to a firing position to a first cam system on one side of the firearm bolt assembly, and to localize compressive forces applied during a transition from the firing position to the initial position to a second cam system another side of the firearm bolt assembly. Localizing the forces in that manner enables the use of a first cam system that is relatively robust compared to the second cam system.
Claims7
A firearm bolt assembly comprising:
- a first side, a second side, a proximal end, and a distal end, the first side being substantially opposite the second side;
- a bolt head;
- a bolt body;
- a first cam system defined by only a pair of single first complementary cam surfaces proximate the first side of the firearm bolt assembly, the bolt head comprising one of the pair of single first complementary cam surfaces, the bolt body comprising another of the pair of single first complementary cam surfaces;
- and
- a second cam system defined by only a pair of single second complementary cam surfaces proximate the second side of the firearm bolt assembly, the bolt head comprising one of the pair of single second complementary cam surfaces, the bolt body comprising another of the pair of single second complementary cam surfaces;
- wherein:
- said bolt body comprises a first wedge proximate the first side of the firearm bolt assembly and a first inverse wedge proximate the second side of the firearm bolt assembly;
- said bolt head comprises a second wedge proximate the first side and a second inverse wedge proximate the second side of the firearm bolt assembly;
- said first and second wedges define said first cam system;
- said first and second inverse wedges define said second cam system;
- said one of the pair of the single first complementary cam surfaces comprises a first cam surface on the first wedge that is oriented towards the proximal end of the firearm bolt assembly;
- said another of the pair of single first complementary cam surfaces comprises a second cam surface on the second wedge that is oriented towards the distal end of the firearm bolt assembly;
- said one of the pair of single second complementary cam surfaces comprises a third cam surface on the first inverse wedge that is oriented towards the distal end of the firearm bolt assembly;
- and
- said another of the pair of single second complementary cam surfaces comprises a fourth cam surface on the second inverse wedge that is oriented towards the proximal end of the firearm bolt assembly.
Dependencies are inferred from the claim text.