US 7,614,349 B2
Less-lethal ammunition projectile
Judit E. Puskas, Akron, Ohio (US); Amer Ebied, London (Canada); Barry Lamperd, Sarnia (Canada); and Bhuwneesh Kumar, London (Canada)
Assigned to The University of Western Ontario, London, ON (Canada)
Appl. No. 10/574,268
PCT Filed Oct. 04, 2004, PCT No. PCT/CA2004/001773
§ 371(c)(1), (2), (4) Date Feb. 15, 2007,
PCT Pub. No. WO2005/031246, PCT Pub. Date Apr. 07, 2005.
Claims priority of provisional application 60/507491, filed on Oct. 02, 2003.
Prior Publication US 2007/0234891 A1, Oct. 11, 2007
Int. Cl. F42B 8/12 (2006.01); F42B 30/00 (2006.01)
U.S. Cl. 102—517  [102/502] 26 Claims
OG exemplary drawing
 
1. A polymer-based ammunition, comprising:
a composite material including
a polymer matrix including at least one thermoplastic elastomeric polymer (TPE) component, and at least one soft elastomeric polymer component that at ambient temperatures is above its glass transition temperature;
particles of a sufficiently high specific gravity material that are dispersed in the polymer matrix and present in an amount such that the composite material has a specific gravity of in a range from about 2 to 3; and
the composite material having a shape of a pre-selected projectile.