Harp Tuning Key

Weak grip strength disallowed harp tuning

Injury inducing grip to spin high torque - recruiting signifcant muscular activity
Typical "T" handle key with injury triggering design
EMG showng high actvity in forearm musculature with traditional key
Inefficient Key Shape Disallowed Effective Tuning & Excessive Muscle Activity

PROBLEM


SOLUTION

Custom Harp Tuning Key Design

Allows tuning without severe muscle action allowing improved performance playing in addition to “hearing” the tone of string tension during tuning

Custom ergonomic solution by Ergo Inc.
Hand posture in more biomechanically efficient position with new key design allowing harpist to maintain subtle "touch"
Custom ergonomic solution by Ergo Inc.
Concept development
Custom ergonomic solution by Ergo Inc.
EMG showng low actvity in forearm musculature with traditional key
Custom ergonomic solution by Ergo Inc.
Final design w/padded handle & machined tool steel socket
Custom ergonomic solution by Ergo Inc.
Final design w/machined 8 point socket for precision fit on Lyon & Healy pins @ multiple angles