Silent alarm clock

Details Silent alarm clock Silent alarm clock

1996-05-23

1998-06-09

Miska, Vit W.

Horology: time measuring systems or devices

Combined with disparate device

External alarm

368 47, 368204, 368230, 368250, G04B 4700, G04B 1906, G04C 1102

Patent

active

057645949

ABSTRACT:
A silent alarm clock including a portable receiver unit with a wrist watch-type configuration. The receiver unit includes a vibrator adapted to create a vibrating sensation upon the receipt of a radio signal. To provide power to the receiver unit a rechargeable battery is included with a pair of associated contacts and a charger adapted to allow the recharging thereof. Also included is a base transmitter unit with a recharging base having a pair of contacts for contacting those of the receiver unit in a recharge orientation. A clock unit is situated within the base transmitter unit having associated control circuitry and a speaker. The clock circuitry is adapted to define at least two predetermined times. The base transmitter unit is adapted to transmit an audio signal via the speaker at a predetermined time if the receiver unit is the recharge orientation thereof and further generate a radio signal via free space if the receiver unit is not in the recharge orientation. Thus, a first user is awakened via the vibrator at the first predetermined time and places the receiver unit within the recharging base thereafter. A second user is then awakened at the second predetermined time via the audio alarm.

REFERENCES:
patent: 4093944 (1978-06-01), Muncheryan
patent: 4297677 (1981-10-01), Lewis et al.
patent: 4872005 (1989-10-01), DeLuca et al.
patent: 4873677 (1989-10-01), Sakamoto et al.
patent: 4920525 (1990-04-01), Meister
patent: 5072429 (1991-12-01), Mair
patent: 5144600 (1992-09-01), Cheng
patent: 5297118 (1994-03-01), Sakumoto
patent: 5373488 (1994-12-01), Lidor

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