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US 8,616,534 B2Granted
Diffuser tube
AssigneeKubota Corporation
InventorsYouichirou Hirose, Yasunobu Okajima
Life of this patent
Estimating the term…
Abstract
A diffuser tube is capable of preventing sludge from entering the tube when a diffusion operation is not performed, thereby preventing clogging of diffusion holes and inside of the tube and reducing a pressure loss during the diffusion operation. The diffuser tube is formed of an elastic tubular body, and slit cutting surfaces of a diffusion slit are slanted with respect to a radial direction of a membrane member in a slanted surface portion.
Claims5
A diffuser tube, comprising:
- a membrane member formed of a tubular elastic body having an inner surface which is in communication with an air supply source;
- and
- a plurality of diffusion slits formed on and penetrating through the membrane member, each of the plurality of diffusion slits having a non-straight line shape on a surface of the membrane member, the non-straight line shape having two ends and a line segment defined therebetween, the diffusion silt and the line segment defining a closure region functioning as a pseudo-lid formed in the membrane member, each of the plurality of diffusion slits having a first slit cutting surface on a closure region side of the membrane member and a second slit cutting surface on a remaining portion side of the membrane member,
- wherein each of the plurality of diffusion slits has a slanted surface portion formed in at least a predetermined portion thereof, the first and second slit cutting surfaces of the diffusion slit in the slanted surface portion being slanted with respect to a radial direction of the tubular elastic body,
- and wherein, in the slanted surface portion, the first slit cutting surface overlays the second slit cutting surface from without.
2 more elements
Dependencies are inferred from the claim text.