Gregory K Sims

US Patent:

55114547, Apr 30, 1996

Filed:

Nov 17, 1994

Appl. No.:

8/341521

Inventors:

Marvin S. Jones - Port Washington NY
Dirk Dickten - Long Island City NY
Gary M. Green - Madison CT
Paul D. Oleksy - Yonkers NY
Gregory R. Sims - Astoria NY
Ludwig Tomescu - New York NY
Robert C. Berger - Glendale NY

Assignee:

Steinway Musical Properties, Inc. - Waltham MA

International Classification:

G10C 318

US Classification:

84236

Abstract:

An escapement action for a piano includes a hammershank having a first end mounted to pivot relative to the piano and a second end carrying a hammer to strike a tensioned string of the piano, with a knuckle disposed therealong between the first and second ends. A repetition support bearing against a key of the piano is mounted to pivot relative to the piano in response to depression of the key. A jack has a first portion extending from a pivot connection with the repetition support and defines a jack surface disposed for engagement with a knuckle surface, the jack arranged for escape of the jack surface from engagement with the knuckle surface during depression of the key. A spring urges the jack toward an "at rest" position with the jack surface in engagement with the knuckle surface. A jack retainer assembly dependent from the hammershank between the second end and the knuckle includes a cushion surface positioned to retain the jack in "at rest" position in opposition to force of the spring.