05761096 is referenced by 84 patents and cites 9 patents.

A speed-sensing projectile such as for example a baseball includes a generally spherical body. An inertial switch is positioned within the body and is actuable between open and closed conditions in response to accelerations of the body greater than a threshold value. A processor also within the body is responsive to the inertial switch and calculates the average speed at which the baseball is thrown over a fixed distance. A visible display on the body is in communication with the processor and displays the calculated speed.

Title
Speed-sensing projectile
Application Number
8/742920
Publication Number
5761096
Application Date
November 1, 1996
Publication Date
June 2, 1998
Inventor
David Zakutin
170 University Ave. West, Suite 12-103, Waterloo, Ontario
CA
Agent
Connolly & Hutz
IPC
G06F 15/20
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