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US 2020/0258492 A1Published application
Noise suppression device
AssigneePattison Sand Company, L.L.C.
InventorHoward W. Wood
Life of this patent
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AssigneePattison Sand Company, L.L.C.
InventorHoward W. Wood
Estimating the term…
A Noise Suppression device is provided for pneumatic noise producing tools, including jack leg drills, jack hammers and other hand-operated machinery. This device comprises an expansion chamber substantially enclosing a sound source of the noise producing tool. The chamber comprises a lining and, preferably, an acoustic panel to provide sound absorption. In one embodiment, the device also includes a skirting to direct the noise away from the tool. The lining of the expansion chamber may comprise a material such as Thinsulate® old filter casing, or other noise absorbing material to absorb at least a portion of the sound, reducing the level of noise emanating from the drill during operation. The device preferably includes an outer shell or protective surface which may comprise a durable material such as HDPE plastic and comprises an inner surface. The device not only reduces muffler noise but also the noise from the tool itself.
A removable noise suppression device for reducing the rate of noise exposure to the user of a hand operated tool, said tool having a noise source, said noise suppression device comprising an inner surface sized and shaped to cover at least a portion of a body of the tool that embodies the noise source, said noise suppression device including a first open end, a second open end, at least one and preferably more than one sound suppressors comprising one or more of an acoustic panel and an echo absorber, at least one liner comprising noise reducing material generally extending between the first open end and the second open end, and a skirt opening away from the second open end.
A noise suppressing device for use with hand-operated machinery said machinery comprising a noise source, said noise suppressing device comprising a first end and a second end, an inner surface comprising a conical shape, and a sound absorbing panel positioned inside and substantially contiguous to the inner surface.
A noise suppressing device for use with hand-operated drilling machinery comprising an outer shell, at least one of an acoustic panel and a mesh lining positioned between a first ring near a first end forming a first opening and a second ring near a second end forming a second opening, said at least one of an acoustic panel and a mesh lining substantially covering an inner surface of the outer shell.
Dependencies are inferred from the claim text.