Haptic Feedback Device Using Standing Waves

This invention describes a device that provides touch feedback to a user. It works by having a liquid-filled container with a flexible side. An electronic component pushes on the liquid to create specific pressure patterns, called standing waves, which then make the flexible side vibrate in a way a user can feel.

Why it matters: Since 2009, the cost and size of precision actuators and control electronics have decreased. This makes sophisticated haptic feedback using controlled standing waves more feasible for compact devices.

Status: ExpiredProtection ended and was never renewed
How hard to build: ModerateActuator, driver, precise wave control electronics.

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