Football having raised ribs
Patent 5133550 Issued on July 28, 1992. Estimated Expiration Date: 
July 24, 2011. 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.
July 24, 2011. 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.InventorApplicationNo. 735406 filed on 07/24/1991US Classes:473/596, Having handle or surface configuration for enhancing user`s handgrip thereon473/613Having fluid-dynamic means other than stitched seam or textured surface to alter, stabilize, or retard passage of projectile through the fluid (e.g., spiral fluting to impart spin, etc.)ExaminersPrimary: Marlo, George J.Attorney, Agent or FirmInternational ClassA63B 043/02AbstractA football-shaped game ball is formed of a resilient foam material and defines an oblate spheroidal outer surface having generally pointed ends. A plurality of rib portions extend outwardly from the outer surface and define nonsymmetrical cross-sections. In the preferred embodiment shown, the rib portions define generally saw-tooth shaped cross-sections which may be gripped in either of two gripping manners and which provide differing alternative aerodynamic characteristics depending upon the direction of spin imposed upon the football.Field of SearchGame ball-carried indicia | |
