Traveling state calculating devices

Details Traveling state calculating devices Traveling state calculating devices

1994-06-20

1996-12-17

Hofsass, Jeffery

Communications: electrical

Land vehicle alarms or indicators

For bicycle

340539, 455 341, 455 342, 455 63, B60R 2510

Patent

active

055857809

ABSTRACT:
In a traveling state calculating device, a sensing and sending unit senses the number of rotations of a wheel and sends by radio a signal indicative of the sensed number of rotations of the wheel to a calculating and displaying unit to thereby calculate and display the traveling speed and the covered distance. When the traveling state cannot be detected accurately due to interference of radio signals from other devices, the present traveling state calculating device senses the interference, and changes the frequency of the radio signal being used to another frequency to prevent continuation of the interference so as to calculate the traveling state accurately.

REFERENCES:
patent: 4694485 (1987-09-01), Iwase
patent: 4887249 (1989-12-01), Thinesen
patent: 4903322 (1990-02-01), Inahara
patent: 5008647 (1991-04-01), Brunt et al.
patent: 5511435 (1996-04-01), Kitamura et al.

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