06148271 is referenced by 140 patents and cites 5 patents.

A device for measuring a movable object, such as a baseball, football, hockey puck, soccer ball, tennis ball, or a golf ball. Part of the device, called the object unit, is embedded, secured, or attached to the movable object of interest, and consists of an accelerometer network, electronic processor circuit, and a radio transmitter. The other part of the device, called the monitor unit, is held or worn by the user and serves as the user interface for the device. The monitor unit has a radio receiver, a processor, an input keypad, and an output display that shows the various measured motion characteristics of the movable object, such as the distance, time of flight, speed, trajectory height, spin rate, or curve of the movable object, and allows the user to input data to the device.

Title
Speed, spin rate, and curve measuring device
Application Number
9/7241
Publication Number
6148271
Application Date
January 14, 1998
Publication Date
November 14, 2000
Inventor
Dave Marinelli
Superior
CO, US
Agent
James R Young
Assignee
Silicon Pie
CO, US
IPC
G01P 15/00
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