05564698 is referenced by 113 patents and cites 27 patents.

A hockey puck with an electromagnetic transmitter. The electromagnetic transmitter could include an infrared transmitter, ultraviolet transmitter, radar repeater, RF transmitter or other device for transmitting electromagnetic waves outside of the visible spectrum. The electromagnetic transmitter is turned on using a shock sensor and is turned off using a timer.

Title
Electromagnetic transmitting hockey puck
Application Number
8/498009
Publication Number
5564698
Application Date
June 30, 1995
Publication Date
October 15, 1996
Inventor
Philip C Evans
Portola Valley
CA, US
Charles L Rino
Menlo Park
CA, US
Alan A Burns
Portola Valley
CA, US
Harold Guthart
Los Altos
CA, US
Alan C Phillips
Los Altos
CA, US
Fred J Heinzmann
Los Altos
CA, US
David B Hill
Los Angeles
CA, US
Richard H Cavallaro
Mountain View
CA, US
Stanley K Honey
Palo Alto
CA, US
Agent
Fliesler Dubb Meyer & Lovejoy
Assignee
Fox Sports Productions
CA, US
IPC
A63B 71/04
View Original Source