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US 6,550,571 B1Granted
Noise reduction structure for cab of working vehicle
AssigneeKomatsu Ltd.
InventorsKeiji Kimura, Kuniaki Nakada
Life of this patent
Estimating the term…
Abstract
A noise reduction structure for a cab of a working vehicle, by which a high degree of noise reduction effectiveness can be surely obtained, is provided. For this purpose, the noise reduction structure has a configuration in which a sound-insulating chamber (A; B; C) adjacent to a cab (10a) is provided at a position of at least one of the following: under a floor (11a) of the cab (10a), behind a rear wall of the cab (10a), and at a side of a side wall of the cab (10a).
Claims2
A cab for a working vehicle for reducing noise in the cab, comprising:
- a sound-insulating chamber, which is different and independent from a space having a source of noise, being located adjacent to said cab at a position of an existing member of said cab, which does not include a window of said cab, and which is located at at least one of the following locations:
- under a floor of said cab,
- behind a rear wall of said cab, and
- at a side wall of said cab,
- wherein said sound-insulating chamber is formed by an existing member of said cab, a part located at a side of the space having said source of noise, and a sound-insulating material between the existing member of said cab and the part located at the side of said space having said source of noise.
2 more elements
Dependencies are inferred from the claim text.