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Device for detecting net faults in tennis

  • US 5,585,778 A
  • Filed: 07/20/1994
  • Issued: 12/17/1996
  • Est. Priority Date: 07/27/1993
  • Status: Expired due to Fees
First Claim
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1. A device for detecting a fault when a tennis ball contacts a tennis net supported by a post comprising:

  • at least one sensor mounted adjacent the net for generating an electrical signal in response to mechanical vibrations and stresses on the net caused by the ball contacting the net, one of said sensors being mounted on the post, wherein said at least one sensor is selected from the group consisting of an electric sensor, an electromechanical sensor, and an electronic sensor and said at least one sensor is further from the group consisting of an accelerometer and a piezoelectric transducer;

    an output device selected from the group consisting of an audio output device and an optical output device; and

    electronic signal processing means comprising a comparator connected between said at least one sensor and said output device in a linear circuit arrangement for activating said output device in response to the electrical signal.

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