Vertical jump measuring device
First Claim
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1. A method to measure vertical jump height of a jumper, which method comprises:
- measuring both take-off impulse force over a period of time and landing impulse force over a period of time of a jump of said jumper;
measuring a time period between take-off and landing;
converting said impulse force and time periods measurements into upward and downward velocities by integrating force over said time measurements;
calculating vertical jump height from said velocities; and
displaying said vertical jump height.
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Abstract
A method to measure height of a vertical jump of a jumper. At least one switch is deactivated by the jumper stepping thereon. The switch is initially activated by the jumper jumping upward therefrom and thereafter deactivated upon return. A time period is measured while the switch is activated. The square of the activated time period is calculated and thereafter the result is multiplied by a constant to derive vertical jump height. Finally, the resultant vertical jump height of the jump is displayed.
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Citations
10 Claims
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1. A method to measure vertical jump height of a jumper, which method comprises:
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measuring both take-off impulse force over a period of time and landing impulse force over a period of time of a jump of said jumper;
measuring a time period between take-off and landing;
converting said impulse force and time periods measurements into upward and downward velocities by integrating force over said time measurements;
calculating vertical jump height from said velocities; and
displaying said vertical jump height. - View Dependent Claims (2)
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3. A vertical jump measuring device, which comprises:
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at least one normally open transducer adapted to deliver a signal and deactivated in response to a jumper stepping thereon;
a timer connected to said transducer and adapted to receive said signal to measure a time period said transducer is activated while said jumper is in the air;
a table which derives vertical height jumped from impulse force and time period measurements;
means to display the resultant vertical height jumped from said table; and
an output device connected to said means to display the resultant vertical jump height of said jumper obtained from said table. - View Dependent Claims (4, 5)
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6. A vertical measuring device, which comprises:
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at least one normally closed transducer adapted to deliver a signal and activate response to a jumper stepping thereon;
a timer connected to said transducer and adapted to receive said signal to measure a time period said transducer is deactivated while said jumper is in the air;
a table which derives vertical height jumped from impulse force and time period measurements;
means to display the resultant vertical height jumped; and
an output device connected to said means to display the resultant vertical jump height of said jumper obtained from said table. - View Dependent Claims (7, 8)
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9. A vertical jump measuring device, which comprises:
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at least one normally open transducer adapted to deliver a signal and deactivated response to a jumper stepping thereon;
at timer connected to said transducer and adapted to receive said signal to measure time period said transducer is activated while said jumper is in the air;
a table which derives vertical height jumped by calculating the square of the time period the jumper is in the air and thereafter multiplying the result by a constant;
means to display the resultant vertical height jumped from said table; and
an output device connected to said means to display the resultant vertical jump height of said jumper obtained from said table.
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10. A vertical jump measuring device, which comprises:
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at least one normally closed transducer adapted to deliver a signal and activated in response to a jumper stepping thereon;
a timer connected to said transducer and adapted to receive said signal to measure a time period said transducer is deactivated while said jumper is in the air, a table which derives vertical height jumped by calculating the square of the time period the jumper is in the air and thereafter multiplying the result by a constant;
means to display the resultant vertical height jumped; and
an output device connected to said means to display the resultant vertical jump height of said jumper obtained from said table.
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Specification