Ceramic munitions projectile
Patent 4850278 Issued on July 25, 1989. Estimated Expiration Date: 
September 3, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 3, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2315853 2926612 3123003 3232233 3276369 3338167 3375108 3463047 3902683 Discarding frangible rotating band InventorsAssigneeApplicationNo. 06/903307 filed on 09/03/1986US Classes:102/501, PROJECTILES102/444, Practice projectile type102/506, Fragmenting102/529, Practice or cleaning501/103, Zirconium oxide501/104, And alkaline earth metal or magnesium compound501/128, And silicon compound other than clay501/95.3Whisker containingExaminersPrimary: Tudor, Harold J.Attorney, Agent or FirmInternational ClassesC04B 35/486 (20060101)C04B 35/64 (20060101) F42B 8/00 (20060101) F42B 8/16 (20060101) F42B 12/74 (20060101) F42B 12/00 (20060101) AbstractA ceramic munitions projectile, particularly useful for practice or target munitions is provided. The projectile is preferably made of zirconia which is densified by a pressureless sintering method. The projectile has sufficient toughness to withstand acceleration and torque created during projectile firing and trajectory.Other References
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