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US 11,944,881 B2Granted
Tennis net tension system including service let indication feature
AssigneeGroup One Limited
InventorFredric Goldstein
Life of this patent
Estimating the term…
Abstract
Disclosed is system and method for measuring the tension of a tennis net, and, alternatively or in addition, for determining if a service let occurs via the measuring of the net tension. The disclosed embodiments measure a force exerted on the center-strap or the singles stick by the net. In these embodiments, the measured force provides an accurate reflection of the tension of the net.
Claims20
A method, comprising:
- indicating, using an indicator, that an impact between a ball and a tennis net has occurred;
- arming a let detection function, wherein the indicating step is only performed when the let detection function has been armed;
- and
- starting a shot clock in order to help enforce a time limit imposed upon a player at various stages of a tennis match, wherein the steps of arming the let detection function and starting the shot clock are initiated by a chair umpire during a tennis match.
1 more element
A system for detecting net cord contact, comprising:
- at least one sensor attached to a net including a net cord;
- wherein the at least one sensor is in communication with at least one umpire device;
- wherein the at least one sensor includes at least one net strap sensor attached to a net strap, wherein the net strap is a component of the net in tension with the net cord;
- wherein the system is configured to interpret signals generated by the at least one sensor to determine a vertical movement of the net cord;
- and
- wherein the system is configured to transmit an alert to the at least one umpire device when a change in the vertical movement of the net cord exceeds a preset threshold;
- and
- wherein the net strap is a center strap.
5 more elements
Dependencies are inferred from the claim text.