Bi-directional Timer with Asymmetric Flow Path

The timer employs an asymmetric internal structure with a biased flow path that directs sand flow through a specific sequence of chambers. The asymmetric configuration includes a first chamber, second chamber, third chamber, and fourth chamber arranged in a non-symmetric pattern with a biased flow path that ensures consistent timing while allowing bidirectional reset. The asymmetric design of the flow path and chamber arrangement enables the sand to always follow the same timing path regardless of rotation direction.

The timer structure is designed to perform multiple functions: it provides consistent timing measurement and simultaneously accepts reset operations in both clockwise and counterclockwise directions. The universal design is achieved through the symmetric external shape combined with asymmetric internal flow path, allowing the same structure to handle both timing and bidirectional reset operations effectively.

The timer divides the sand flow path into multiple discrete chambers (first, second, third, and fourth chambers) separated by partitions. This segmentation allows sand to be distributed across different chambers during operation, and during reset, sand can be redirected to flow back through the chambers in reverse sequence, enabling faster reset without requiring all sand to traverse the entire path in one direction only.

The timer enables reset by rotating the body in the opposite direction of normal operation. When rotated counterclockwise (opposite to the clockwise timing direction), the sand flow path is inverted, allowing sand to flow back through the chambers in reverse sequence from the lower chamber back to the upper chamber,从而实现快速重置。