Abstract: A swing practice apparatus has an upper horizontal bar, a lower horizontal bar that is positioned directly under the upper horizontal bar and runs parallel with the upper horizontal bar, an upper slide ring capable of sliding along the upper horizontal bar, a lower slide ring capable of sliding along the lower horizontal bar, and a spring that exserts force to the ball toward a catcher side. A ball is supported from the upper and the lower slide rings via support springs, and positioned between the upper horizontal bar and the lower horizontal bar. A stopper is mounted at a pitcher side of the upper horizontal bar to stop the upper slide ring, and a release mechanism releases the stopper to release the upper slide ring from the stopper and the upper slide ring and the ball move toward the catcher side due to the spring.

Abstract: A swing practice apparatus has a base portion that makes a contact on a ground, a standing pole that extends upward vertically from the base portion, a horizontal arm that is elongated between a first base side and a third base side and is arranged to be perpendicular to the standing pole, a hinged arm that is rotatable at one end at a middle of the horizontal arm, a trajectory pipe attached to the other end of the hinged arm, a trajectory wire connected between the trajectory pipe and a bracing structure, and a ball suspended to a suspension ring which is slidable along the trajectory wire and the trajectory pipe.

Abstract: A versatile toolholder system is provided that is used by a numerically controlled machine tool. The toolholder system has an attachment portion that has a standardized shape to allow the toolholder to be used by conventional numerically controlled machine tools. The toolholder system is comprised of a toolholder body, a collet adaptor that allows a desired collect to fit into the toolholder body, a pull-up means to pull a collet to fasten the collect in the toolholder body. Various sizes and configurations of collet adaptor can be used to accommodate various collets of different shapes and sizes.

Abstract: A ball drop mechanism for a game apparatus has a mechanism allowing to drop balls one by one on a desired location. The ball drop mechanism includes a housing that stores balls, a cylindrical ball passage connected to the housing, and a cogged stopper that is located in the housing near the ball passage. One side of the cogged stopper has a hollowed portion that matches a part of the ball passage. A golf ball dispenser is established by installing the ball drop mechanism for a game apparatus. The golf ball dispenser installs a large number of golf balls and has a golf ball placer with a seesaw movement mechanism to place a ball accurately on the ground.

Abstract: A game apparatus is able to drop the balls one by one on the ground and to pick-up the balls on the ground one by one. The game apparatus includes a ball guide to store a plurality of balls to be movable by their own weight, an upper support provided at an upper portion of the ball guide, a lower housing provided at a lower portion of the ball guide, a ball stopper mechanism provided in the lower housing to stop and release the movement of the ball in the vertical direction, a drive part to stop and release the movement of the ball by the ball stopper mechanism, and a lever to operate the drive part from outside. The lever includes a ball picking mechanism for picking balls on the ground when the game apparatus is turned upside-down and pressed on the ball on the ground.

Abstract: A ball drop mechanism for a game apparatus has a mechanism allowing to drop balls one by one on a desired location. The ball drop mechanism includes a housing that stores balls, a cylindrical ball passage connected to the housing, and a cogged stopper that is located in the housing near the ball passage. One side of the cogged stopper has a hollowed portion that matches a circumference of the ball passage. A golf ball dispenser is established by installing the ball drop mechanism for a game apparatus. The golf ball dispenser has a plurality of ball cylinders which install and guide a large number of golf balls and has a golf ball placer with a seesaw movement mechanism to place a ball accurately on the ground.

Abstract: A versatile toolholder system is provided that is used by a numerically controlled machine tool. The toolholder system has an attachment portion that has a standardized shape to allow the toolholder to be used by conventional numerically controlled machine tools. The toolholder is comprised of a toolholder body, a collet adaptor that allows a desired collect to fit into the toolholder body, a pull-up means to pull a collet to fasten the collect in the toolholder body. Various sizes and configurations of collet adaptor can be used to accommodate various collets.

Abstract: A ball drop mechanism for a game apparatus has a mechanism allowing to drop balls one by one on a desired location. The ball drop mechanism includes a housing that stores balls, a cylindrical ball passage connected to the housing, and a cogged stopper that is located in the housing near the ball passage. One side of the cogged stopper has a hollowed portion that matches a part of the ball passage. A golf ball dispenser is established by installing the ball drop mechanism for a game apparatus. The golf ball dispenser installs a large number of golf balls and has a golf ball placer with a seesaw movement mechanism to place a ball accurately on the ground.

Abstract: A spherical object drop mechanism for a game apparatus has a mechanism allowing to drop spherical objects one by one on the desired position on the ground. The spherical object drop mechanism includes a ball guide to store a plurality of spherical objects movable in vertical direction by gravity, an upper housing provided at an upper portion of the ball guide, a lower housing provided at a lower portion of the ball guide, a ball stopper ring to stop and release the movement of the spherical object in the vertical direction, a drive part to transmit the movement to the ball stopper ring, and a lever to operate the drive part from outside.

Abstract: A game apparatus has a mechanism allowing to drop spherical objects one by one on the desired positions on the ground. The spherical object drop mechanism includes a housing for storing a plurality of spherical objects to allow vertical movements of the spherical objects therein by their own weight, a first stopper provided in the housing for stopping the vertical movement of the spherical objects, a second stopper provided in the housing located at a location lower than the first stopper by the distance corresponding to the diameter of the spherical object for stopping the vertical movement or releasing the stop operation of the spherical objects, a stopper drive mechanism to operate the first stopper and the second stopper opposite to each other, and a knob to operate the stopper drive mechanism from outside.

Abstract: A spherical object drop mechanism for a game apparatus has a mechanism allowing to drop spherical objects one by one on the desired position on the ground. The spherical object drop mechanism includes a ball guide to store a plurality of spherical objects movable in vertical direction by gravity, an upper housing provided at an upper portion of the ball guide, a lower housing provided at a lower portion of the ball guide, a ball stopper ring to stop and release the movement of the spherical object in the vertical direction, a drive part to transmit the movement to the ball stopper ring, and a lever to operate the drive part from outside.

Abstract: A pair of shoes fastener for releasably coupling at least one pair of shoes together. The pair of shoes fastener includes a male portion and a female portion that are releasably coupleable together. The male portion has a neck member outwardly extending from the front face thereof and a bulbous end portion extending from the neck member. The female portion has an aperture extending through its top and bottom faces and a pair of axial breaks providing an opening through the front face of the female portion into the aperture. The aperture and the axial breaks define a groove of the female portion. The end and neck members of the male portion are slidably insertable in the groove of the female portion. The male portion is coupled to an inner side of a shoe. The female portion is coupled to an inner side of another shoe.

Abstract: The present invention provides a method to prevent a fraudulent use of a credit card, a security pass card and the like. A computer system containing card account numbers is provided with corresponding security codes. For authorization of credit issuance or a security check, a computer operator feeds the account number to the computer which in turn displays the corresponding security code on a terminal display. The operator verifies that the card bearer has the same security code, thereby verifying that the card bearer is the true card holder.