Tide clock device

A tide clock device mountable in a housing and operative to display tidal conditions, comprising:

• a masking element mounted in said housing and stationery with respect thereto, said masking element forming a dial for said tide clock device and having a window opening formed therein to define a view area;
• a disc-shaped display element mounted in said housing behind said masking element and rotatable about an axis of rotation with respect to said masking element, said display element having an outer surface facing said masking element provided with a shaded area bordered by a boundary line, said boundary line in the shape of an eccentric area rotatable about said axis of rotation, said eccentric region sized to move into and out of said view area as said display element is rotated;
• a clock drive means for rotating said display element with respect to said masking element on said axis of rotation whereby the movement of said eccentric into and out of said view area corresponds to low tide and high tide conditions;
• and
• cooperative index means adjacent said window opening and on said display element for indicating a variable first time interval in hours and portions thereof until the low tide condition will occur and for indicating a variable second time interval in hours and portions thereof until the high tide condition will occur.

A tide clock device mounted in a housing operative to display tidal conditions, comprising:

• a display element mounted in said housing and forming a dial therefore, said display element stationary with respect to said housing and including a shaded area;
• a masking element mounted in front of said display element and rotatable with respect thereto;
• a clock drive means for rotating said masking element with respect to said display element on an axis of rotation whereby said masking element is advanced past said shaded area whereby said shaded area is sequentially covered and uncovered to indicate tidal conditions ranging from a low tide condition to a high tide condition;
• and
• cooperative index means associated with said masking element and said display element for indicating a variable first time interval in hours and portions thereof until the low tide condition will occur and for indicating a variable second time interval in hours and portions thereof until the high tide condition will occur.