Equipment with energy knocking-down septum for bullets, to be installed in shooting ranges
Patent 4786059 Issued on November 22, 1988. Estimated Expiration Date: 
December 16, 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.
December 16, 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 2411026 2772092 Cantilevered pellet backstop Target practice system Patent #: 4470604 InventorAssigneeApplicationNo. 06/942501 filed on 12/16/1986US Classes:273/410, Projectile backstop273/403, Penetrable target with replaceable element273/404, Penetrable target with projectile backstop73/167ORDNANCE AND PROJECTILEExaminersPrimary: Pinkham, Richard C.Assistant: Graham, Mark S. Attorney, Agent or FirmInternational ClassesF41J 1/12 (20060101)F41J 1/00 (20060101) Foreign Application Priority Data1985-12-20 ITAbstractThis invention relates to a knocking-down septum comprising a steel shutter structure on the slats of which a granulated material rests. The granulated material may consist of granules of natural or synthetic rubber, also of recovery rubber and possibly of a self-extinguishing type of rubber, of dry sand, or of a mixture of sand and rubber or the like. This granulated material lies on the slats of the shutter structure in accordance with the shutter's natural angle of repose and is thereby retained by the shutter. When a bullet crosses the thickness of the granulated material the granulated material slows down the velocity of the bullet. | |
