Patent ID: 8579744
Filing Date: 2013-11-12
Classification: A63B,B60C,F16K,Y10T

Abstract:
1. A pneumatic inflation valve core of an inflatable sports ball, which includes an exterior cover, a ball bladder disposed in the exterior cover, and a valve housing arranged on an inner surface of the ball bladder for fixing the pneumatic inflation valve core therein, the pneumatic inflation valve core comprising: a lengthwise body having a passage penetrating the lengthwise body in a lengthwise direction; a mouth disposed on one end of the lengthwise body and a distal surface of the mouth exposed on the exterior cover; a sheath disposed on the other end of the lengthwise body opposite to the mouth, and extending outwards the valve housing in the ball bladder; and a crown disposed between the mouth and the sheath, and served for being fixed in the valve housing, wherein an outermost section of the passage in the mouth and the crown is shut as a shut slit, and one end of the shut slit is exposed outwards the distal surface of the mouth, and the other end of the shut slit in the valve housing is tightened by the valve housing, an innermost section of the passage in the sheath is opened as a canal, the canal directly links to the shut slit, and a diameter of the canal is smaller than a diameter of an inflation needle; an inner surface of the sheath surrounding the canal gradually inclines to the centerline of the canal in a direction from the crown towards the center of the ball bladder, and an end of the canal opposite to the crown is still opened; and when the inflation needle is inserted into the passage of the pneumatic inflation valve core, the pneumatic inflation valve core has adequate length such that the sheath prevents the inflation needle from piercing through the ball bladder when the ball bladder is flat.