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Class Information
Number: 84/243
Name: Music > Instruments > Stringed > Pianos > Hammers actions > Details
Description: Patents for features not elsewhere classifiable.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7408102 |
Jack motion-restricting device for upright piano |
Aug. 5, 2008 |
| 7129404 |
Keyboard musical instrument having keys regulated with stable key balance pieces and process for fabricating keys |
Oct. 31, 2006 |
| 7126049 |
Method of improving repetitive striking performance, jack and action mechanism of piano |
Oct. 24, 2006 |
| 6639133 |
Universal piano action striking vertical and horizontal strings from below and above |
Oct. 28, 2003 |
| 6423889 |
Regulating button mechanism for easily regulating escape timing, silent system cooperative therewith and keyboard musical instrument equipped therewith |
Jul. 23, 2002 |
| 5911167 |
Piano escapement action |
Jun. 8, 1999 |
| 5608175 |
Keyboard musical instrument having regulable regulating buttons linked with hammer stopper |
Mar. 4, 1997 |
| 5557052 |
Keyboard musical instrument having variable contact point between jack and regulation button |
Sep. 17, 1996 |
| 5552559 |
Keyboard musical instrument equipped with hammer sensors changing position between recording mode and silent mode |
Sep. 3, 1996 |
| 5511454 |
Piano escapement action |
Apr. 30, 1996 |
| 5509340 |
Method for adjustment of hammer let off on a keyboard musical instrument |
Apr. 23, 1996 |
| 5374775 |
Keyboard instrument for selectively producing mechanical sounds and synthetic sounds without any mechanical vibrations on music wires |
Dec. 20, 1994 |
| 5353671 |
Upright piano with key action mechanism responsive to repetition without double strike and loss of sound |
Oct. 11, 1994 |
| 4685371 |
Grand piano action |
Aug. 11, 1987 |
| 4194428 |
Keyboard musical instrument |
Mar. 25, 1980 |
| 4096779 |
String anchor replacement for repetition lever and jack in a piano action |
Jun. 27, 1978 |
| 4061067 |
Modified piano striking mechanism |
Dec. 6, 1977 |
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