Digital alarm clock

Claim 2

A digital alarm clock comprising: a. a supporting structure; b. digital clock numerals generally centrally positioned on said supporting structure; c. an electric motor for driving said digital clock numerals fixed to one side of said supporting structure; d. an alarm mechanism having a resilient vibrator arm for causing an audible sound upon vibration thereof connected to said electric motor on said one side of said supporting structure; e. a first cam gear rotatably mounted on the other side of said supporting structure and continuously rotated as a function of time by said electric motor; f. a rotatably mounted alarm time control cam member positioned adjacent to said first cam member for permitting movement of first said cam member at a preset alarm time; g. an elongated axially movable rod mounted on said supporting structure and extending from one side of said supporting structure to the other side of said supporting structure, one end of said rod being arranged for longitudinal slidable movement by the resilient vibrator arm; and h. means in engagement with the other end of said rod and said first cam gear for permitting said resilient vibrator arm to longitudinally slide said rod and said first cam gear toward the alarm time control cam to thereby release the alarm vibrator arm to sound the alarm at a preset alarm time.

Claim 3

A digital alarm clock as defined in claim 1 wherein a generally flat lever is pivotally mounted on said supporting structure and is positioned between the other end of said elongated rod and said first cam gear for permitting said resilient vibrator arm to longitudinally slide said rod and said first cam gear toward the alarm time control cam to thereby release the alarm vibratOr arm to sound the alarm at a preset time.

Claim 4

A digital alarm clock as defined in claim 1 wherein an alarm time-indicating drum is mounted on the alarm time control cam, and a spring member is fixed to the alarm time control cam for resiliently urging said indicating drum into frictional engagement with said alarm time control cam.

Claim 5

A digital alarm clock as defined in claim 3 wherein gear teeth are formed on the outer periphery of said alarm time control cam and a gearwheel is positioned in mesh with the teeth on the alarm time control cam for adjusting the relative position of the alarm time control cam with respect to the continuously rotated gear.

Claim 6

A digital alarm clock as defined in claim 4 wherein an indexing lever is pivotally mounted on said supporting structure and is spring urged against the teeth formed on the periphery of the alarm time control cam for holding the alarm time control cam and the alarm time-indicating drum in any one of a plurality of alarm time set positions.

Claim 7

A digital alarm clock comprising: a. a supporting structure including two sideplates arranged generally parallel to each other and held spaced from each other by a plurality of spacer posts; b. digital clock numerals positioned between said sideplates; c. an electric motor for driving said digital clock numerals fixed to one of said sideplates; d. an alarm mechanism having a resilient vibrator arm for causing an audible sound upon vibration thereof connected to said electric motor; e. a pivotally mounted bellcrank lever having a first portion for engaging said vibrator to restrain vibratory movement thereof; f. a first cam gear rotatably mounted adjacent to said other plate and continuously rotated as a function of time by said electric motor; g. a rotatably mounted alarm time cam member positioned adjacent to said first cam gear for permitting axial movement of said first cam gear at a preset alarm time; h. a generally flat lever mounted adjacent to said axially movable cam gear for movement thereby; i. an elongated slidable rod extending through an aperture in one of said sideplates, one end of said elongated slidable rod being arranged for engagement with a second portion of said bellcrank lever, and the other end of said elongated rod being in engagement with said flat lever, said vibrator arm exerting a spring force on said bellcrank lever for causing pivotal rotation thereof and longitudinal slidable motion of said elongated rod toward said flat lever; and j. said first cam gear and said alarm time cam cooperating to cause axial movement of said first cam gear upon relative rotation of said cams as a function of time through a predetermined relative angular movement of said cam members for allowing said elongated rod to slide toward said first cam gear to thereby allow said bellcrank lever to pivot to release the alarm vibrator to sound the alarm.

Claim 8

A digital alarm clock comprising: a. a supporting structure including two sideplates arranged generally parallel to each other and held spaced from each other by a plurality of spacer posts; b. digital clock numerals positioned between said sideplates; c. an electric motor for driving said digital clock numerals fixed to one of said sideplates; d. an alarm mechanism having a resilient vibrator arm for causing an audible sound upon vibration thereof connected to said electric motor; e. a pivotally mounted bellcrank lever having a first portion for engaging said vibrator to restrain vibratory movement thereof; f. a first cam gear rotatably mounted adjacent to said other plate and continuously rotated as a function of time by said electric motor; g. a rotatably mounted alarm time cam member positioned adjacent to said first cam gear for permitting axial movement of said first cam gear at a preset alarm time; h. a generally flat lever mounted adjacent to said axially movable cam gear for movement thereby; i. an elongated slidable rod extending through an aperture in one of said sideplates, one end of said elongated slidable rod being arranged for engagement with a second portion of said bellcrank lever, and the other end of said elongated rod being in engagement with said flat lever, said vibrator arm exerting a spring force on said bellcrank lever for causing pivotal rotation thereof and longitudinal slidable motion of said elongated rod toward said flat lever; and j. said first cam gear and said alarm time cam cooperating to cause axial movement of said first cam gear upon relative rotation of said cams as a function of time through a predetermined relative angular movement of said cam members for allowing said elongated rod to slide toward said first cam gear to thereby allow said bellcrank lever to pivot to release the alarm vibrator to sound the alarm.

Claim 9

A digital alarm clock as defined in claim 6 wherein said flat lever is pivotally mounted on one of said spacer posts and is provided with an aperture for receiving a guidepost which is fixed to one of said sideplates in order to pivotally mount and guide said lever on said clock-supporting structure.

Claim 10

A digital alarm clock as defined in claim 6 wherein a screw is threaded into an upper portion of said generally flat lever for providing a contact surface with the end of the elongated rod and for compensating for manufacturing tolerances between the bellcrank lever, the alarm vibrator, the flat alarm actuator lever and the first cam gear.

Claim 11

A digital alarm clock as defined in claim 6 wherein the electric motor is supported on a supporting plate which is arranged generally parallel to and spaced from one of said sideplates.

Claim 12

A digital alarm clock as defined in claim 9 wherein an aperture is provided in one of said sideplates for guiding one end of said elongated rod and an aperture is provided in the motor-supporting plate for guiding the other end of the elOngated rod.