Flexible hose
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United States of America Patent
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May 28, 2002
Grant Date -
N/A
app pub date -
Nov 8, 2000
filing date -
Nov 10, 1999
priority date (Note) -
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Abstract
A flexible hose (1) with a corrugated wall (2), comprising an internal surface (3) with projections (4, 5) and recesses (6, 7), said hose (1) being obtained by moulding a plastic material, wherein each internal projection (4, 5) comprises a substantially flat and smooth top face (8, 9). Each top face (8, 9) has a first width (W1) and each internal recess has a second width (W2). The ratio between first width and second width (W1/W2) is preferably larger than or equal to 2.2. The hose may comprise a hollow longitudinal protuberance or score.
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