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US 4,633,753 AGranted
Muffler mechanism for a piano
AssigneeNippon Gakki Seizo Kabushiki Kaisha
InventorHoroyoshi Takahashi
Life of this patent
Estimating the term…
Abstract
A muffler mechanism for a piano includes at least one axially rotatable muffler pipe arranged below and extending over an array of strings and a flexible muffler coupled to the muffler pipe and registable at an operative position suited for damped performance, thereby enabling a simple construction, a reduced mounting space and stable and reliable damping effect without deformation even after long use.
Claims11
A muffler mechanism for a piano, comprising;
- at least one muffler pipe axially rotatably arranged below an array of strings and extending horizontally in the width direction of the piano;
- a muffler coupled to the muffler pipe and movable, upon axial rotation of the muffler pipe, between an inoperative position for normal performance and an operative position for damper performance, the operative position being located between the array of strings and an associated array of hammers;
- a means for driving the muffler pipe for the axial rotation in response to the manual operation of the driving means;
- a sound generator unit which clicks upon the axial rotation of the muffler pipe, the sound generator unit includes a magnet mounted to the driving means for generating the clicking sound.
1 more element
A muffler mechanism for a piano, comprising:
- at least one muffler pipe axially rotatably arranged below an array of strings and extending horizontally in the width direction of the piano;
- a muffler coupled to the muffler pipe and movable, upon axial rotation of the muffler pipe, between an inoperative position for normal performance and an operative position for damper performance, the operative position being located between the array of strings and an associated array of hammers;
- means for driving the muffler pipe for the axial rotation upon manual operation thereon;
- and
- magnetic means coupled to the driving means for selectively maintaining by magnetic attraction the muffler at the operative position.
2 more elements
Dependencies are inferred from the claim text.