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Class Information
Number: 84/240
Name: Music > Instruments > Stringed > Pianos > Hammers actions > Upright
Description: Miscellaneous types of action for pianos having strings in a nearly vertical plane.
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 |
| 6639133 |
Universal piano action striking vertical and horizontal strings from below and above |
Oct. 28, 2003 |
| 6164410 |
Exhaust gas muffler |
Dec. 26, 2000 |
| 5949013 |
Keyboard musical instrument equipped with hammer stopper implemented by parallelogram link mechanism |
Sep. 7, 1999 |
| 5679914 |
Keyboard device for an electronic instrument and an electronic piano |
Oct. 21, 1997 |
| 5353671 |
Upright piano with key action mechanism responsive to repetition without double strike and loss of sound |
Oct. 11, 1994 |
| 5287787 |
Upright piano for constant key-touch regardless of manipulation of soft pedal |
Feb. 22, 1994 |
| 5196638 |
Muting device of upright piano |
Mar. 23, 1993 |
| 5042354 |
Action for upright piano |
Aug. 27, 1991 |
| 4896577 |
Action for upright piano |
Jan. 30, 1990 |
| 4879939 |
Action for upright piano |
Nov. 14, 1989 |
| 4860626 |
Wippen heel mechanism for an upright piano |
Aug. 29, 1989 |
| 4854211 |
Action mechanism of an upright piano |
Aug. 8, 1989 |
| 4194428 |
Keyboard musical instrument |
Mar. 25, 1980 |
| 4161129 |
Modified piano striking mechanism |
Jul. 17, 1979 |
| 4152967 |
Pneumatic piano action |
May. 8, 1979 |
| 4061067 |
Modified piano striking mechanism |
Dec. 6, 1977 |
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