Resiliency testing device for tennis balls
OwnerCharlie R. Shertsinventor
Life of this patent
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Abstract
A sports ball resiliency testing device is disclosed. The device includes a housing that defines a receiving area into which a ball is placed. The receiving area is configured and dimensioned to act upon the contours of the ball. A movable member extends into the receiving area and makes contact with the surface of the ball. The movable member is urged by a spring so as to exert a compressing force on the ball. The urging force of the spring is adjustable so as to provide for various testing ranges. The ball thus exerts a resisting force against the movable member. A value of the resisting force is determined when an equilibrium is reached between the compressing force and the resisting force. This value indicates the playability of the ball.
Claims21
A sports ball testing device, comprising:
- (a) a housing defining a receiving area for receiving a ball to be tested;
- (b) a moveable member extending into said receiving area for contacting and exerting a compressing force on said ball against a resisting force exerted by said ball;
- (c) urging means for exerting an urging force on said moveable member in a direction effective for urging said moveable member to exert the compressing force on said ball;
- (d) adjusting means for adjusting the urging force exerted by said urging means so as to provide for various testing ranges;
- (e) indicating means coupled to said urging means for indicating the value of the resisting force in response to the physical configuration of said urging means when the equilibrium is reached between the compressing force and the resisting force.
A sports ball testing device, comprising:
- (a) a housing defining a receiving area for receiving a ball to be tested;
- (b) a housing member extending into said receiving area for contacting and exerting a compressing force on said ball against a resisting force exerted by said ball, said resisting force being dependent on playability of said ball;
- (c) urging means for exerting an urging force on said moveable member in a direction effective for urging said moveable member to exert said compressing force on said ball, said urging force having a testing range specific for a particular ball type;
- (d) adjusting means for adjusting the testing range of the urging force exerted on said moving member to provide a plurality of testing ranges for testing different types of balls;
- (e) determining means for determining a value of said resisting force exerted by said ball when an equilibrium is reached between the compressing force and the resisting force;
- and
- (f) indicating means for indicating the value of the resisting force when the equilibrium is reached so as to indicate the playability of said ball.
Dependencies are inferred from the claim text.