Sabot

• US 6,073,560 A
• Filed: 03/09/1998
• Issued: 06/13/2000
• Est. Priority Date: 03/09/1998
• Status: Expired due to Term

• Current Assignee: Ammunition Operations, LLC (Vista Outdoor Inc.)
• Original Assignee: Remington Arms Company Incorporated
• Inventors: Stone, Jeffrey Wayne
• Primary Examiner(s): TUDOR, HAROLD JAY
• Application Number:
  US09/037,169
• Time in Patent Office: 827 Days
• Field of Search: 102/520-523, 102/532
• US Class Current: 102/522
• CPC Class Codes: F42B 14/064 Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base

Abstract

The present invention relates generally to a one-piece sabot for holding a sub-caliber projectile. For use in muzzle loading and other firearms, the sabot includes a plurality of petals which, in one embodiment, encapsulate the projectile. The petals have a high mass portion near the barrel end of the sabot. The portions are subjected to a centrifugal opening force as the sabot exits the firearm barrel upon firing. The centrifugal force causes the petals to clear the flight path of the projectile quickly so that the sabot is less likely to interfere with accurate projectile flight. In one embodiment, the sabot may further include a protective surface for engagement with a ram rod and for protection of the encapsulated projectile, for increased aerodynamic stability.

Claims

1. A one-piece sabot comprising:

a front section;

a back section having a semispherical recess;

a plurality of petals extending from the back section to the front section and defining a plurality of slots therebetween;

whereby each petal increases in cross-sectional thickness from the back section to define an internal cavity between said plurality of petals, the internal cavity being of sufficient size to receive and completely encapsulate a projectile inserted therein;

each of the plurality of petals having a petal top section that defines a depth; and

the plurality of petal top sections define a conical contact surface having a center, and with each petal top section having a radial dimension,

whereby the ratio of the depth to the radial dimension is approximately 1;

1 and the petal top sections slant outwardly downwardly from the center of the contact surface.

2. The sabot of claim 1 wherein the back section is a boat tail end.

3. The sabot of claim 1 wherein the sabot is used in conjunction with a firearm having a barrel and the contact surface diameter is larger than the barrel land-to-land distance.

4. The sabot of claim 1 further comprising a central section medial to the front and back sections.

5. The sabot of claim 4 wherein the front section has a higher mass than the central section.

6. The sabot of claim 1 wherein the sabot is used in conjunction with a muzzle-loading firearm.

7. The sabot of claim 6 wherein the contact surface provides a protective barrier for engagement of the sabot with a ramrod.

8. The sabot of claim 1 wherein the internal cavity is sized to accept a projectile of between about .30 and .58 caliber.

9. The sabot of claim 1 wherein the internal cavity is sized to accept a projectile of between about .45 and .50 caliber.

10. The sabot of claim 1 wherein the petal tops are subjected to a centrifugal opening force as the sabot exits a rifled barrel.

11. The sabot of claim 1 wherein the sabot is formed of linear low density polyethylene.

12. A one-piece sabot for a muzzle-loading firearm having a barrel comprising:

a front section having a diameter larger than a barrel land-to-land distance;

a back section having a boat tail end with a semispherical recess;

a plurality of petals extending from the back section to the front section and to define a plurality of slots therebetween;

each petal increases in cross-sectional thickness from the back section to define an internal cavity between said plurality of petals, the internal cavity being of sufficient size to receive and completely encapsulate a projectile having a caliber between about .30 and .58 caliber;

each of the plurality of petals having a top section defining a depth;

each petal top section comprising a single, surface wherein the petal tops are subjected to a centrifugal opening force as the sabot exits a rifled barrel; and

the plurality of petal tops define a conical contact surface, each petal top having a radial dimension wherein the ratio of the depth to the radial dimension is approximately 1;

1 and the contact surface has a center and each petal top slants outwardly downwardly from the center of the contact surface to provide a protective barrier for engagement of the sabot with a ramrod.