17. 重要專利 US5,636,146
17
SPEEDOMETER FOR A MOVING SPORTSMAN
Abstract: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 is particularly well-
suited to 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.
Assignee(s): PHATRAT TECHOLOGY LLC
Appl. Date: November 21, 1994