Road sweeping machine including an improved filter device
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United States of America Patent
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N/A
Issued Date -
Oct 16, 2008
app pub date -
Apr 2, 2008
filing date -
Apr 13, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A disclosed road sweeping machine (1) including a filter device (6) and comprising: movement means (2), suitable to allow movement of the road sweeping machine (1), collection means (3), suitable to allow collection of refuse and air including pollutants from the outside environment, a container (4), suitable to contain the refuse and the pollutants, means (5) for conveying the air from the container (4) to the outside environment and wherein the filter device (6) is suitable to filter the air conveyed from the conveying means (5) and comprises a filter layer (7) having a filter membrane (7a) provided with a first membrane (7b) made of polytetrafluoroethylene.
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