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US 6,864,412 B2Granted
Stepless music rack and musical instrument equipped with the same
AssigneeYamaha Corporation
InventorTomonori Ichikawa
Life of this patent
Estimating the term…
Abstract
An acoustic piano is equipped with a desk board fallen down onto and raised on a desk rail, wherein a one-way clutch and releaser are provided between the desk rail and a shaft connected to the desk board so that a pianist raises the desk board and keeps it at the optimum angular position without any prop.
Claims17
A music rack used for keeping a document thereon comprising:
- a desk board on which said document is put and changed from a rest position through a maximum attitude angle position to a release position, and
- an attitude changing system provided between a stationary member and said desk board, permitting said desk board to unidirectionally change the position in a stepless manner from said rest position to said maximum attitude angle position and allowing said desk board to return to said rest position when said desk board reaches the release position.
A musical instrument comprising
- a case having plural boards assembled for defining an inner space,
- a keyboard placed on one of said plural boards in such a manner that a player fingers thereon,
- a tone generating system accommodated in said inner space and connected to said keyboard for generating tones in response to the fingering, and
- a music rack provided on another of said plural boards and including a desk board on which said document is put and changed from a rest position through a maximum attitude angle position to a release position and an attitude changing system provided between a stationary member and said desk board, permitting said desk board to unidirectionally change the position from said rest position to said maximum attitude angle position and allowing said desk board to return to said rest position when said desk board reaches the release position.
1 more element
A music rack used for keeping a document thereon comprising:
- a desk board on which said document is put and changed from a rest position through a maximum attitude angle position to a release position, and
- an attitude changing system provided between a stationary member and said desk board, permitting said desk board to change the position in a stepless manner from said rest position to said maximum attitude angle position when a force is exerted on said desk board and keeping said desk board at any position between said rest position and said maximum attitude angle position when said force is removed from said desk board.
A music rack used for keeping a document thereon comprising:
- a desk board to place the document, and
- a system for adjusting an angular position of the desk board, said system provided between a stationary member and said desk board and comprising a clutch to permit said desk board to change the angular position in a stepless manner.
Dependencies are inferred from the claim text.