Abstract: An assembly structure for ping-pong table top is provided, including a first table plate, a second table plate, at least a fixing unit and at least a support unit. The fixing unit includes a first matching element, a second matching element and a coupling element. The first and second matching elements are fastened respectively to bottom of the first and second table plates. When coupling element coupled to the first and second matching elements, two table plates cannot be separated. The support unit includes a fixing element and a collaborating element. The collaborating element has an arch-door shape so that bottom of collaborating element can match fixing element. When assembled, an axis receiving hole is formed between fixing element and collaborating element so that fixing unit can splice two table plates together. Table legs are assembled to support unit. As such, the user can easily assemble the ping-pong table.

Abstract: A ball holder and base plate fixing structure for batting practice apparatus is provided, including a sheath tube and a base plate. The sheath tube includes a first segment and a second segment, connected to each other. The first segment has a round tube shape for providing placing said ball holder. The second segment has a trumpet shape, said sheath tube having compressible resilience. The base plate has an installation hole. When assembled, the second segment of the sheath tube is compressed into the installation hole for tight engagement so as to fix the sheath tube to the base plate. In this manner, the ball holder is sheathed into the sheath tube and fixed to base plate. During batting practice, the resilience of sheath tube allows the ball holder to swing and twist on impact to absorb and annihilate some of the impact. After batting, the resilience of sheath tube can restore the ball holder to original position.

Abstract: A ball holder and base plate fixing structure for batting practice apparatus is provided, including a sheath tube and a base plate. The sheath tube includes a first segment and a second segment, connected to each other. The first segment has a round tube shape for providing placing said ball holder. The second segment has a trumpet shape, said sheath tube having compressible resilience. The base plate has an installation hole. When assembled, the second segment of the sheath tube is compressed into the installation hole for tight engagement so as to fix the sheath tube to the base plate. In this manner, the ball holder is sheathed into the sheath tube and fixed to base plate. During batting practice, the resilience of sheath tube allows the ball holder to swing and twist on impact to absorb and annihilate some of the impact. After batting, the resilience of sheath tube can restore the ball holder to original position.

Abstract: A phacoemulsification irrigation sleeve includes an elongated, resilient, tubular body section configured to surround a portion of a shaft of a phacoemulsification needle, the tubular body section having a distal end and a proximal end, and an inner surface and an outer surface. An enlarged section formed on the proximal end of the tubular body portion surrounds a hub of the phacoemulsification needle and connects the irrigation sleeve to a phacoemulsification handpiece. The irrigation sleeve further comprises at least one slitted irrigation port formed adjacent to the distal end of the body section and configured to splay in response to a drop in pressure between the inner surface and the outer surface.

Abstract: A phacoemulsification irrigation sleeve includes an elongated, resilient, tubular body section configured to surround a portion of a shaft of a phacoemulsification needle, the tubular body section having a distal end and a proximal end, and an inner surface and an outer surface. An enlarged section formed on the proximal end of the tubular body portion surrounds a hub of the phacoemulsification needle and connects the irrigation sleeve to a phacoemulsification handpiece. The irrigation sleeve further comprises at least one slitted irrigation port formed adjacent to the distal end of the body section and configured to splay in response to a drop in pressure between the inner surface and the outer surface.

Abstract: A foldable toss game assembly includes two toss surfaces. Each toss surface has a memory ring on the border, and each toss surface includes at least a hollow toss target area surrounded by a surrounding net. The two toss surfaces are connected by a plurality of connection parts with different sizes to form a three-dimensional structure with a slanted surface. The connection parts can be engaged or disengaged so that the foldable toss game can be easily set up for play or folded for carrying and storage.

Abstract: A structure for air hockey table top is provided, including a surface and a plurality of bumper units surrounding the surface,. The bumper units form a frame surrounding the surface with two openings located at the centers of two opposite sides of the surface to form goals. According to the present invention, the bumper units surrounding the surface are made of strong elastic material to rebound the puck to sustain the speed of the game. In addition, the bumpers may be hidden under a surrounding canopy around the surface so as to prevent from interfering with the movement of the pushers by the players. As the present invention uses no air generation and vent mechanism, the present invention provides a cost-effective and simple structure of air hockey table top for subsequent maintenance.

Abstract: A phacoemulsification irrigation sleeve includes an elongated, resilient, tubular body section configured to surround a portion of a shaft of a phacoemulsification needle, the tubular body section having a distal end and a proximal end, and an inner surface and an outer surface. An enlarged section formed on the proximal end of the tubular body portion surrounds a hub of the phacoemulsification needle and connects the irrigation sleeve to a phacoemulsification handpiece. The irrigation sleeve further comprises at least one slitted irrigation port formed adjacent to the distal end of the body section and configured to splay in response to a drop in pressure between the inner surface and the outer surface.

Abstract: A ball hitting practice device includes a base member having a reception portion on a top thereof and a spherical recess is defined in an underside of the reception portion. A passage is defined through the reception portion and communicates with the spherical recess. A post can be a single post or composed of multiple sections. The post has a base part at a lower end thereof and a cup is connected to a top of the post. The base part is matched with the spherical recess and a diameter of the post is smaller than an inner diameter of the passage. The post extends through the passage and a top of the base part is in contact with an inner surface of the spherical recess. A positioning cap is fixed to the underside of the base member so as to position the base part. A ball is put on the cup and the user hits the ball to practice hitting skills.

Abstract: A dart having an adjustable barycenter is provided. The dart includes a tip, a barrel, a counterweight, and a flight unit. The tip is detachable and assembled at a front end of the barrel. The barrel has a receiving space configured inside the barrel. The counterweight is accommodated in the receiving space at an adjustable position. The flight unit is assembled at a tail end of the barrel. The dart according to the present invention is adapted for adjusting the barycenter thereof by adjusting a position of the counterweight in the receiving space.

Abstract: A batting practice set includes a base, a weight, a cover and a securing unit. The base has first and second walls extending from an underside thereof and a receiving space is defined between the first and second walls. The weight is received in the receiving space and a rod is connected to a top of the base. The weight can be made by sands, pebbles or cement. The cover is connected to the underside of the base and covers the receiving space so that the weight does not separate from the base. By the weight, the base is firmly set on the ground and does not move when using the batting practice set.

Abstract: A batting apparatus is provided, including a supporting unit, at least a linking unit, and a suction disk. The supporting unit includes a base, a supporting rod, and a hanging arm. The bottom of the supporting rod is fixed to the base. The hanging arm is engaged to the top of the supporting rod, and extends outwards. The linking unit is attached to and hanging below the hanging arm, and the bottom end is attached to the suction disk. With the temporary holding of the ball by the suction disk, the present invention can enhance the focus and the eye-hand coordination of the batter. The present invention is also easy to assemble, move and store.

Abstract: A structure of the ball holder for a batting tee is provided, including a holder base and a plurality of resilient supporting elements on the holder base. The resilient supporting elements include at least three long resilient elements with upstanding position on the top surface of the holder base. The entire ball holder is monolithic, for example, manufactured by injection molding. With minimum contact surface, the ball holder can reduce the impact of the friction on the trajectory.

Abstract: An irrigation/aspiration tip having a shaft with a reduced or relatively small diameter with a distal tip having a relatively large diameter. The diameter of the shaft can vary depending upon the incision size preferred by the surgeon, and the diameter of the distal tip will vary depending upon the size of the phacoemulsification tip preferred by the surgeon.

Abstract: A pressure sensing chamber having a canted tubing extension with a reduced diameter portion extending through the chamber. The tubing contains a plurality of ports so as to allow the purging of air from the chamber, but the ports are sized so that bubbles entering the tubing cannot easily flow into the chamber. The reduced diameter portion creates a pressure differential between the holes. This differential pressure creates flow through the chamber under high liquid flow and turbulent liquid flow events.

Abstract: A bouncing practice net is provided, including at least two plies of nets. The mesh size of the back ply is smaller or equal to the mesh size of the front ply, and both plies are arranged in an asymmetrical or interleaved manner, and are tightly stretched and attached inside a frame. The practice net can provide bouncing trajectory that is unpredictable to simulate the actual batting.

Abstract: A ping pong table with folding protection mechanism is disclosed. At least a pair of folding protection mechanisms is installed underneath the table, one on each side. Each folding protection mechanism is composed of at least one guide roller, one steel cable, and one pneumatic cylinder. The two halves of the ping pong table are folded and supported by an under carriage that is pivotally attached onto the underside of the table. The pneumatic cylinder on each side has one end connected to a cross bar under the table, and the other end connected to a steel cable, which then, through guide rollers, is further connected to the bottom beam of the undercarriage. This folding protection mechanism makes the folding/unfolding of the ping pong table easier and more user-friendly, so even one person is able to handle the table set up without difficulty.

Abstract: A Bocce ball includes, sequentially from outside to inside, a body layer, a medium layer, and a core layer. The body layer and the medium layer are made of different materials. For example, the body layer is made of unsaturated polyester resin, while the medium material is made of acrylic material. The body layer and the medium layer are securely combined with each other. The core layer is made heavy and is enclosed by the medium layer.

Abstract: A batting practice tee for baseball and softball practice is provided. The batting practice tee includes a home plate and a stem. The top of the stem includes a supporting part, which includes a plurality of upright-standing and resilient hairs to hold the ball. As the friction between the ball and the hairs are reduced, the trajectory path of the ball can accurately reflect the hitting force and position to provide better simulation and training of the practice.

Abstract: A surgical irrigation system having reduced irrigation flow resistance. Reduction in irrigation fluid flow resistance is achieved by increasing the diameter of the irrigation fluid tubings. The ends of the tubings are tapered to reduce the stiffness of the tubings and to allow the tubings to be connected to current surgical devices.