|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G10 |
MUSICAL INSTRUMENTS; ACOUSTICS

|  | G10 |
Note(s) This class covers generally all sound-emitting devices, whether or not they may be considered as being musical. The term "musical instrument", used in this class, should not be understood as excluding devices emitting a single sound signal. For the convenience of users, the following Class Index is given in place of Sub-class Indexes, to show the grouping of the elaborations belonging to different sub-classes, under the three fundamental types: Wind instruments String instruments Percussion instruments which relate clearly to the majority of instruments. There are of course some instruments of which the principle of operation belongs less clearly to one of these three types. They correspond to groups Fulltext... Hierarchy... Expanded...G10D 17/00 and Fulltext... Hierarchy... Expanded...G10K 7/00, Fulltext... Hierarchy... Expanded...G10K 9/00, Fulltext... Hierarchy... Expanded...G10K 10/00, all the other groups normally finding a definite place.

|  | G10C |
PIANOS (non-musical aspects of toy pianos A 63 H 5/02; aspects of automatic actuation Fulltext... Hierarchy... Expanded...G10F)

|  | G10C 1/00 |
General design of pianos or like stringed musical instruments with keyboard

|  | G10C 1/02 |
· | of upright pianofortes

|  | G10C 1/04 |
· | of grand pianofortes

|  | G10C 1/06 |
· | of cembaloes, spinets, or similar stringed instruments

|  | G10C 3/00 |
Details of, or accessories for, pianos or the like

|  | G10C 3/02 |
· | Cases

|  | G10C 3/04 |
· | Frames; Bridges; Bars

|  | G10C 3/06 |
· | Resonating means, e.g. resonant strings, soundboards; Fastenings of the resonating means

|  | G10C 3/08 |
· | Arrangements of strings

|  | G10C 3/10 |
· | Tuning pins or straining devices

|  | G10C 3/12 |
· | Keyboards; Keys

|  | G10C 3/14 |
· · | for actuation by the feet

|  | G10C 3/16 |
· | Actions

|  | G10C 3/18 |
· · | Hammers

|  | G10C 3/20 |
· · | involving the use of hydraulic, pneumatic, or electromagnetic means

|  | G10C 3/22 |
· · | for grand pianofortes

|  | G10C 3/24 |
· · | for reciprocating of tremolo

|  | G10C 3/26 |
· | Pedals or pedal mechanisms for half-blow or similar sound-modifying

|  | G10C 3/28 |
· | Transposing devices

|  | G10C 3/30 |
· | Couplers, e.g. for playing octaves

|  | G10C 5/00 |
Combinations of pianos with other musical instruments, e.g. with bells, with xylophone

|  | G10C 7/00 |
Arrangements, in pianos, of electric means for transmitting music

|  | G10C 9/00 |
Special tools and methods for the manufacture and maintenance of pianos