Abstract: A ball server apparatus for conducting batting practice wherein the apparatus ejects a ball into the air and the user swings a bat in order to hit the ejected ball. The ball server apparatus includes a base member connected to a server seat member, the base member for stabilizing the server seat member on a playing surface. The server seat member includes an interior section having a vertical channel extending therethrough; the interior section of the server seat member includes an upper seat section, a middle seat section and a bottom seat section. The ball server apparatus further includes a movable rod having a proximal end and a distal end; the proximal end of the movable rod is within the bottom seat section of the server seat member; the proximal end of the movable rod has an ejection assembly connected thereto; the distal end of the movable rod has a ball seat member connected thereto; and the ball seat member is used for holding a portion of the ball therein.

Abstract: A ball server includes a server seat, a movable rod inserted into the server seat, an elastomer, a touch plate, and a delay element within the server seat. In using, the movable rod is pressed so as to buckle the touch plate and the movable rod is interacted with the delay element, the ball will flatly place on the movable rod. When the ball server is actuated, the movable rod will be driven by the delay element so that it rises slowly, but after a time period, the action of the delay element is released and the movable rod rises rapidly and at the same time, the ball rises. When the movable rod is operated by the delay element, the batter can prepare for next beating.

Abstract: A Christmas tree light system including an electrical receptacle connected to power supply, and electrical wire having an electrical plug at one end connected to the electrical receptacle, and a plurality of lamp sockets respectively connected to the electrical wire to hold a respective bulb, wherein each lamp socket has an insulative plate supported on a spring member and forced upwards by it to disconnect a metal connecting plate from the center metal contact plate, which is adapted for contacting the tip contact of the bulb; the electrical plug has a cartridge fuse for overload protection, and protective means for shielding the conducting blades of the cartridge fuse; the electrical receptacle has movable stop means forced by spring means to block the way between the blade insertion slots and the electrical terminals.