DE228806C - - Google Patents
Info
- Publication number
- DE228806C DE228806C DENDAT228806D DE228806DA DE228806C DE 228806 C DE228806 C DE 228806C DE NDAT228806 D DENDAT228806 D DE NDAT228806D DE 228806D A DE228806D A DE 228806DA DE 228806 C DE228806 C DE 228806C
- Authority
- DE
- Germany
- Prior art keywords
- bellows
- valve
- opening
- channel
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000000979 retarding effect Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 description 8
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10F—AUTOMATIC MUSICAL INSTRUMENTS
- G10F1/00—Automatic musical instruments
- G10F1/02—Pianofortes with keyboard
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electrophonic Musical Instruments (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE228806C true DE228806C (https=) |
Family
ID=489171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT228806D Active DE228806C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE228806C (https=) |
-
0
- DE DENDAT228806D patent/DE228806C/de active Active
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