| 摘要 |
This invention is in relation to a shotgun choke tube made of aluminum in which sometimes this aluminum choke tube may be coated with an anodize, hard coating or plating of some sort to increase hardness, strength, lubricity, corrosion resistance, etc to the aluminum. The aluminum choke tube is composed of a cylindrical tube having a sealing face against the bore of the shotgun bore, multiple clearance diameters, an outside body diameter, threads and on the extended version choke tubes, there is a portion of diameter that extends outward beyond the end of the muzzle of the shotgun barrel. The inside diameters are comprised of tapers, sometimes straights and multiple geometries to act as somewhat of a funnel. The aluminum choke tube is held in place securely inside the shotguns barrel by means of usually a thread or other geometrical design created by the shotgun manufacturer. |
| 主权项 |
1. A shotgun choke tube comprising:
a tube comprising
a body clearance portion,a threaded portion adjacent the body clearance portion,a body portion adjacent the threaded portion, andan extended head portion adjacent the body portion,wherein an outer diameter of the extended head portion is greater than an outer diameter of the body portion, and the outer diameter of the body portion is greater then an outer diameter of the threaded portion, wherein the outer diameter of the head portion is constant along the entire length of the head portion, wherein a straight choke portion of the extended head portion, which is adjacent an end of the tube, has a constant inner diameter, wherein the tube comprises a constantly tapered inner diameter extending from a tapered portion of the extended head portion, which is adjacent the straight choke portion, to a gas seal of the body clearance portion, and wherein the tube is a single piece of aluminum.
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