Piano escapement action
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 8, 1999
Issued Date -
N/A
app pub date -
Mar 12, 1997
filing date -
Nov 17, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A knuckle assembly for an escapement action of a piano includes a knuckle, a jack retainer, and an adjustment means acting between the retainer and the knuckle for positioning the retainer relative to the knuckle. The knuckle assembly is mountable between first and second ends of a hammershank. The knuckle defines a knuckle surface for engagement with a jack. The knuckle is arranged for escape of the jack from engagement with the knuckle surface during depression of a piano key. The retainer retains the jack in an 'at rest' position with the jack in engagement with the knuckle surface in opposition to force of a spring urging the jack toward the 'at rest' position. A piano escapement action assembly includes a hammershank, a knuckle assembly, a jack engaged with a knuckle surface in an 'at rest', and a spring disposed to urge the jack toward the 'at rest' position.
First Claim
Other Claims data not available