Baseball bat with impact indicator
First Claim
Patent Images
1. A bat for striking an object comprising:
- a body portion constructed for striking said object;
a handle portion for manual gripping of said bat, said handle portion and said body portion being interconnected;
means for detecting impact between said bat and said object, said means for detecting impact being contained in at least one of said body and handle portions, and including a magnet and a coil positioned relative to each other for coupling the magnetic field of said magnet with said coil, one of said magnet and coil being resiliently mounted for motion relative to the other, impact of said bat with said object causing relative motion between said magnet and coil and generating a voltage in said coil;
circuit means operative with said means for detecting impact for producing a signal representative of the magnitude of said impact, said circuit means for producing a signal sensing said voltage generated in said coil, said circuit means converting said coil voltage to said signal proportionate to the magnitude of said impact;
display circuitry including visual indicators for indicating magnitude of said impact, said display circuitry receiving and processing said signal and driving said indicators, said indicators being positioned on said bat, wherein said visual indicators may operate in either an OFF state or an ON state, at least a portion of said indicators going to said ON state after an impact exceeding a selected level of impact, the quantity of said visual indicators going to said ON state being dependent upon the magnitude of said impact signal received and processed by said display circuitry.
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Accused Products
Abstract
Within a bat handle a resiliently mounted magnet oscillates when the bat strikes a ball. The magnetic field couples with a fixed inductive coil inducing a signal with an amplitude proportional to the impact force. The signal is processed to provide an indication on the bat of the force of impact.
85 Citations
12 Claims
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1. A bat for striking an object comprising:
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a body portion constructed for striking said object; a handle portion for manual gripping of said bat, said handle portion and said body portion being interconnected; means for detecting impact between said bat and said object, said means for detecting impact being contained in at least one of said body and handle portions, and including a magnet and a coil positioned relative to each other for coupling the magnetic field of said magnet with said coil, one of said magnet and coil being resiliently mounted for motion relative to the other, impact of said bat with said object causing relative motion between said magnet and coil and generating a voltage in said coil; circuit means operative with said means for detecting impact for producing a signal representative of the magnitude of said impact, said circuit means for producing a signal sensing said voltage generated in said coil, said circuit means converting said coil voltage to said signal proportionate to the magnitude of said impact; display circuitry including visual indicators for indicating magnitude of said impact, said display circuitry receiving and processing said signal and driving said indicators, said indicators being positioned on said bat, wherein said visual indicators may operate in either an OFF state or an ON state, at least a portion of said indicators going to said ON state after an impact exceeding a selected level of impact, the quantity of said visual indicators going to said ON state being dependent upon the magnitude of said impact signal received and processed by said display circuitry. - View Dependent Claims (2, 3)
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4. A bat striking an object comprising:
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a body portion constructed for striking said object; a handle portion for manual gripping of said bat, said handle portion and said body portion being interconnected; means for detecting impact between said bat and said object, said means for detecting impact being contained in at least one of said body and handle portions, and including a magnet and a coil positioned relative to each other for coupling the magnetic field of said magnet with said coil, one of said magnet and coil being resiliently mounted for motion relative to the other, impact of said bat with said object causing relative motion between said magnet and coil and generating a voltage in said coil; circuit means operative with said means for detecting impact for producing a signal representative of the magnitude of said impact, said circuit means for producing a signal sensing said voltage generated in said coil, said circuit means converting said coil voltage to said signal proportionate to the magnitude of said impact; display circuitry including visual indicators for indicating magnitude of said impact, said display circuitry receiving and processing said signal and driving said indicators, said indicators being positioned on said bat, wherein said display circuitry includes a multivibrator circuit having said signal input thereto, said multivibrator circuit cycling only when said DC signal exceeds a predetermined level, and a counter circuit, said counter circuit receiving output pulses from said multivibrator circuit when said multivibrator circuit cycles. - View Dependent Claims (5, 6, 7)
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8. A bat for striking an object comprising:
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a body portion constructed for striking said object; a handle portion for manual gripping of said bat, said handle portion and said body portion being interconnected; means for detecting impact between said bat and said object, said means for detecting impact being contained in at least one of said body and handle portions; and
including a magnet and a coil positioned relative to each other for coupling the magnetic field of said magnet with said coil, one of said magnet and coil being resiliently mounted for motion relative to the other, impact of said bat with said object causing relative motion between said magnet and coil and generating a voltage in said coil;circuit means operative with said means for detecting impact for producing a signal representative of the magnitude of said impact; display means including visual indicators for indicating magnitude of said impact, said display means receiving said signal and driving said indicators, said indicators being positioned on said bat, wherein said coil is fixed relative to said body and handle portions, said magnetic being resiliently mounted for motion relative to said coil, said means for detecting impact further including a spring fixed at one end relative to said handle portion, said spring supporting said magnet at the other end thereof. - View Dependent Claims (9, 10, 11, 12)
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Specification