Segmented seal zones with a fluid-filled bubble resolve the contradiction between transport reliability and consumer ease of opening.
Welded polymer foam layers with surface indentations reduce manufacturing time and mass while improving aerodynamic control.
A reusable valve enables rapid gas pressure adjustment in tennis balls using standard inflation needles.
An electrochromic apodized aperture adjusts light transmittance via electrical current to control optical parameters.
Microprocessor manages LED timing via accelerometer feedback to extend battery life and simplify battery replacement in low-light archery conditions.
An air impermeable bladder wrapped in reinforcing fabric resolves durability and shelf life contradictions.
An American football integrates electronic sensors to monitor ball position and movement during active play.