Professional Upright Piano Action

摘要

A vertical or upright piano action includes a key bed, a key frame, a wippen, a damper action, a hammer action, a repetition lever, a sustain mechanism, sostenuto mechanism, and an una chorda or action shift mechanism. Butt directly engages damper, improving response to professional standard. Touch resistance is unchanged by sustain mechanism.

主权项

1. A keyboard musical instrument, having at least one key, a wippen, and a repetition lever, wherein said repetition lever is installed on said wippen, wherein said wippen is mounted exclusively to said key.