Ultra-Thin Self-Balancing Flexible Key Switch for a Keyboard

1:

• An ultra-thin self-balancing flexible key switch is claimed that comprises:
• A pair of elastic bands, a flexible polymer, a bistable base, a flexible pcb, a switch actuator;
• whereas in an unactuated state:
• The flexible pcb is attached to and set atop the bistable base;
• whereas the switch actuator is attached to and set atop the flexible pcb;
• whereas the flexible polymer is set atop the switch actuator;
• whereas
• the pair of elastic bands are stretched and wrapped around the bistable base, the flexible pcb, the switch actuator, and the flexible polymer;
• whereas the pair of elastic bands are spaced apart and placed equidistant and on either side of a vertical central axis of the switch actuator;
• whereas
• the pair of elastic bands are attached to rigid parallel edges of the bistable base;
• whereas the rigid parallel edges of the bistable base are disposed at a vertical distance below the flexible polymer such that a height differential is created;
• whereas the height differential retains the stretching of the pair of elastic bands;
• whereas the stretching in the pair of elastic bands create a slight tension in the pair of elastic bands;
• whereas
• the slight tension in the pair of the elastic bands creates a downward force component about the flexible polymer;
• whereas
• the switch actuator produces a counter balancing upward force component against the flexible polymer;
• whereas
• the upward force component and the downward force component maintain a self-balancing state of rotational mechanical equilibrium;
• such that
• any downward external force applied at any point between the pair of elastic bands on a top surface of the flexible polymer is dynamically transferred towards the vertical central axis of the switch actuator.