Device for returning a ball at a user determinable speed

Details Device for returning a ball at a user determinable speed Device for returning a ball at a user determinable speed

A - Human Necessities

63

B

A63B 69/40 (2006.01)

Patent

CA 2235525

A ball return device that enables a user to quickly and easily adjust the force with which a ball thrown into the device is returned. The ball return device includes a frame constructed from sections of plastic tubing joined by 90° elbows, forming a base and an elevatable portion. The elevatable portion of the frame ispivotally mounted to the base and adjustably positioned at a desired angle relative to the generally horizontal base by a pair of support members. The angle of the elevatable portion of the frame to the base determines the direction in which the ball is returned relative to a given incident path. The support members extend between the base and the elevatable portion of the frame and each includes a smaller diameter tube slidably filled into a larger diameter tube and selectively fixed at one a plurality of preset lengths by a pin that passes through orificesformed in the two tubes. In one preferred form of the invention, a net having hexagonal openings is suspended within the elevatable portion of the frame by lengths of an elastomeric cord that connect a periphery of the net to the frame.The hexagonal openings deform around a ball impacting the net in such a way as to ensure that the ball is consistently returned at a predictable angle relative to the angle at which the ball impacts the net. The elastomeric cord can be tightened or loosened to adjust the tension of the net, thereby determining the relative force with which a ball impacting the net is returned. A friction clip attached to theelastomeric cord retains the selected tension.

Cette invention concerne un renvoi-balles permettant à l'usager de régler rapidement et aisément la force de retour des balles. Le renvoi-balles comprend un cadre fait de tubes en plastique assemblés à angle droit au moyen de coudes et composé d'une base et d'une partie dépliable. La partie dépliable est articulée à la base et peut être réglée à l'angle souhaité par rapport à la base, au moyen d'un paire de bras latéraux. L'angle de la partie dépliable par rapport à la base détermine l'angle de retour de la balle par rapport à sa trajectoire aller. Les bras latéraux reliant la base à la partie dépliable se composent de tubes télescopiques dont on peut régler la longueur au moyen de goupilles insérées dans des trous alignés desdits tubes. Dans une variante privilégiée de l'invention, un filet à mailles hexagonales est tendu à l'intérieur de la partie dépliable du cadre au moyen d'un cordon élastique passée dans ses mailles périphériques. Les mailles hexagonales se déforment autour de la balle de telle sorte que l'angle de retour prévisible est toujours la même pour un même angle d'arrivée au filet. Le cordon élastique peut être plus ou moins tendu pour modifier la force de retour des balles. Un embout à friction attaché à un bout du cordon sert à maintenir la tension choisie.

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