Communications: electrical – Continuously variable indicating – With meter reading
Patent
1984-02-13
1986-07-22
Weldon, Ulysses
Communications: electrical
Continuously variable indicating
With meter reading
340539, 367909, 367197, G08C 1900
Patent
active
046022562
ABSTRACT:
A luggage door unlocking device for a vehicle, by which a luggage door of the vehicle can be unlocked without using an unlocking key, is disclosed. The device comprises a portable transmitter for generating an unlocking signal of ultrasonic wave, an ultrasonic wave receiver which is mounted on the vehicle and which receives an ultrasonic wave from the portable transmitter, a discriminating means for subjecting the signal received by the ultrasonic wave receiver to waveform shaping to obtain a high-frequency pulse train and detecting a high-frequency pulse train of a predetermined pattern to obtain the unlocking signal, and an unlocking mechanism for unlocking the luggage door of the vehicle upon receipt of the unlocking signal after discrimination by the discriminating means. The transmitter has a power supply switch which is enclosed in a case having a clip for attachment to the clothes of the person who carries the transmitter and which is closed upon attachment of the clip to the clothes.
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Akita Shigeyuki
Kago Yoshiyuki
Nippon Soken Inc.
Weldon Ulysses
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