Lead-free shot

• US 5,814,759 A
• Filed: 02/03/1997
• Issued: 09/29/1998
• Est. Priority Date: 09/23/1993
• Status: Expired due to Term

• Current Assignee: OLIN Corporation
• Original Assignee: OLIN Corporation
• Inventors: Shapiro, Eugene, Violette, Gerald Noel, Mahulikar, Deepak, Mravic, Brian, Halverson, Henry J.
• Primary Examiner(s): Jenkins, Daniel J.
• Application Number:
  US08/794,286
• Time in Patent Office: 603 Days
• Field of Search: 102/506, 102/517, 419/38, 75/246
• US Class Current: 102/517
• CPC Class Codes: B22F 1/09 Mixtures of metallic powders
• CPC Class Codes: B22F 1/12 Metallic powder containing non-metallic particles containing lubricating or binding agents or organic material B22F1/10
• CPC Class Codes: C22C 32/0094 with organic materials as the main non-metallic constituent, e.g. resin
• CPC Class Codes: F42B 12/74 of the core or solid body
• CPC Class Codes: F42B 12/745 the core being made of plastics; Compounds or blends of plastics and other materials, e.g. fillers
• CPC Class Codes: F42B 7/046 Pellets or shot therefor

Abstract

A composite lead-free bullet is disclosed comprising a heavy constituents selected from the group of tungsten, tungsten carbide, carballoy, and ferro-tungsten and a second binder constituent consisting of either a metal alloy or a plastic blend.

Claims

1. A lead-free projectile, comprising:

a compacted and sintered composite shot pellet that consists essentially of a high density first constituent that is ferrotungsten particles mixed with particles of a lower density second constituent that is iron.

2. The lead free projectile of claim 1 further including a polymer binder.

3. The lead free projectile of claim 2 wherein said polymer binder is selected from the group consisting of acrylics and polystyrenes.

4. The lead free projectile of claim 1 coated with a jacket selected from the group consisting of tin, zinc, copper, brass and plastic.

5. The lead free projectile of claim 4 coated with a brass jacket.

6. The lead free projectile of claim 3 coated with a jacket selected from the group consisting of tin, zinc, copper, brass and plastic.

7. The lead free projectile of claim 6 wherein said jacket is plastic.