05636146 is referenced by 143 patents and cites 8 patents.

The invention detects the loft time and/or speed of a vehicle, such as a sporting vehicle, during activities of moving and jumping. A loft sensor detects when the vehicle leaves the ground and when the vehicle returns to the ground. A microprocessor subsystem converts the sensed information to determine a loft time. A display shows the recorded loft time to a user of the system. In addition, a speed sensor can detect the vehicle's speed for selective display to the user. The invention can be used, for example, in sporting activities such as snowboarding where users loft into the air on ski jumps and catch "air" time but have no quantitative measure of the actual time lapse in the air. Therefore, users in skiing can use invention to record, store, and playback selected information relating to their sporting day, including the total amount of "air" time for the day and information such as dead time, i.e., time not spent on the slopes.

Title
Apparatus and methods for determining loft time and speed
Application Number
8/344485
Publication Number
5636146
Application Date
November 21, 1994
Publication Date
June 3, 1997
Inventor
Curtis A Vock
Salem
MA, US
Dennis M Darcy
Dracut
MA, US
Peter Flentov
Boston
MA, US
Agent
Curtis A Vock
Assignee
PhatRat Technology
MA, US
IPC
G04F 10/00
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