3846704 is referenced by 53 patents and cites 4 patents.

Apparatus for evaluating an athletic performance against a predetermined performance characterized by a plurality of lights for affording a visual indication to an observer of the progress of the predetermined performance and displayed so as to be comparable to the athletic performance being evaluated; a settable central control for sequentially energizing the lights responsive to the predetermined performance set into the central control and elapsed time; and a communication link between the central control and the lights. Also disclosed are embodiments which include: (1) a pair of setting dials are included for setting in two separate performance times and operating in either a continuous or sequence mode to allow one or more paces to be employed in training; (2) a variety of other options, such as interrupting temporarily the output to the lights; (3) preferred logic apparatus and construction appropriate to the environment and the observer, be he spectator, training athelete or health enthusiast; and (4) apparatus enabling optimum training of an individual as determined by his physiological response.

Title
Apparatus for evaluating athletic performance
Application Number
05/314,801
Publication Number
3846704
Application Date
December 13, 1972
Publication Date
November 5, 1974
Inventor
Bessette Robert C
Agent
Wofford Felsman Fails & Zobal
IPC
H04b 01/00
A63B 71/06
A61B 05/24
A61B 05/00
View Original Source