The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1996
Filed:
Nov. 17, 1994
Marvin S Jones, Port Washington, NY (US);
Dirk Dickten, Long Island City, NY (US);
Gary M Green, Madison, CT (US);
Paul D Oleksy, Yonkers, NY (US);
Gregory R Sims, Astoria, NY (US);
Ludwig Tomescu, New York, NY (US);
Robert C Berger, Glendale, NY (US);
Steinway Musical Properties, Inc., Waltham, MA (US);
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.