Alarm clock
AssigneeCasio Computer Co., Ltd.
InventorHideyuki Arai
Life of this patent
Estimating the term…
Abstract
An alarm clock includes a time indicator, a first alarm for sounding a first alarm at a preset time, a manual rotary bezel provided rotatable relative to the time indicator outside same for setting a time elapsing from the alarm time, and a second alarm for sounding a second alarm when the time set by the rotary bezel has elapsed since the preset time. After the first alarm is sounded at the alarm time, and after the time set by the rotary bezel has elapsed, the second alarm is sounded. The time interval after which the second alarm is sounded is set by a simple operation and two-staged sounding ensures proper awakening of the sleeper.
Claims4
An alarm clock comprising:
- a time indicator having a time hand for indicating a time and an alarm hand for indicating a preset alarm time;
- a first alarm which is sounded at the preset alarm time;
- a ring-like manual rotary member which is rotatable around a periphery of said time indicator to a given position for setting a period of time following the preset alarm time, said ring-like manual rotary member being held at the given position in a direction of its rotation until said manual rotary member is next rotated;
- a detector for detecting the given position of said manual rotary member in the direction of its rotation;
- a count-down timer circuit which sets the period of time following the preset alarm time in accordance with the given position of the ring-like manual rotary member detected by the detector;
- a count-down start controlling circuit for causing said count-down timer circuit to count down the period of time following the preset alarm time responsive to the first alarm being sounded;
- and
- a second alarm which is sounded when the period of time following the preset alarm time is counted down to zero by said count-down timer circuit.
Dependencies are inferred from the claim text.