Patents by Inventor Steven Bollar

Steven Bollar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adjustable embedded bat speed indicator
    Patent number: 6830520
    Abstract: An improved baseball swing trainer is presented where a standard wooden bat is modified with an embedded magnetic speed indicator based on a ball bearing and a magnet. The distance between the magnet and the ball bearing can be adjusted to adjust the amount of swing force necessary to break the ball bearing free. The device is mechanically simple and easy to install in any wooden bat.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: December 14, 2004
    Inventor: Steven Bollar