Manufacturing process of a unitary barrel, chamber and action for a firearm
OwnerKarl C. Lippardinventor
Life of this patent
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Abstract
A unitary barrel, chamber and action assembly for a firearm is manufactured from a single piece of metal stock so as to precisely and consistently meet headspace requirements. A single piece of metal stock having a bore centerline is successively reamed based on a common datum to achieve precise headspace compliance. The unitary assembly is then profiled, again based on measurements from the datum, to provide a unitary barrel, chamber and action assembly without any form of juncture, headspace or harmonic limitations.
Claims26
A method for manufacturing a unitary firearm barrel assembly, comprising:
- providing a piece of metal stock;
- boring a hole of a first diameter in the piece of metal stock;
- reaming concentrically a first portion of the hole to a second diameter, the second diameter being greater than the first diameter wherein reaming includes forming a datum of a third diameter, the third diameter being greater than the second diameter;
- and
- reaming concentrically a second portion of the hole to a forth diameter wherein a depth of the second portion is based on a headspace distance measured from the datum and wherein the forth diameter is larger than the first diameter and the forth diameter is less than the second diameter.
A unitary firearm barrel, chamber and action assembly for a firearm, comprising:
- a piece of metal stock having a bore hole of a first diameter;
- a bolt hole concentrically reamed about a first portion of the bore hole, the bolt hole having a second diameter, the second diameter being larger diameter than the first diameter;
- a datum having a third diameter cut into the piece of metal stock and orientated concentrically to the bore hole wherein the third diameter is greater than the second diameter;
- and
- a chamber concentrically reamed about a second portion of the bore hole, wherein the chamber is of a forth diameter that is greater than the first diameter and less than the second diameter, the chamber having a ream depth into the bore hole measured from the datum.
A method for manufacturing a unitary barrel, chamber and action assembly for a firearm, comprising:
- providing a piece of metal stock wherein the piece of metal stock includes a bore hole of a first diameter;
- reaming a first portion of the bore hole forming a bolt region wherein the bolt region has a second diameter, the second diameter being larger than the first diameter, and wherein reaming includes establishing a datum of a third diameter, the third diameter being larger than the second diameter, at one end of the bore hole;
- and
- forming a chamber in a second region of the bore hole configured to accept a cartridge, the chamber formed by reaming the bore hole to a fourth diameter and to a predetermined depth measured from the datum.
A method for manufacturing a unitary barrel, chamber and action assembly, comprising:
- providing a piece of metal stock;
- boring a bore hole of a bore diameter in the piece of metal stock;
- establishing a reference circumference orientated to the bore hole;
- and
- reaming portions of the bore hole to form a chamber and a bolt body based on measurements from the reference circumference.
Dependencies are inferred from the claim text.