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US 6,582,208 B2Granted
Bladeless pump
AssigneeCalifornia Institute of Technology
InventorMorteza Gharib
Life of this patent
Estimating the term…
Abstract
A bladeless pump is made with rotating parts that are substantially flexible, allowing them to be assembled into desired shapes. The rotating part preferably has no blades thereon, and rotates to produce a fluid flow inside a chamber. The fluid flow in the chamber causes flow along the chamber axis, which itself may be bent.
Claims12
A flexible pump, comprising;
- a shaft, formed of a flexible material, and formed without blades thereon;
- a chamber, surrounding said shaft, and formed with grooves on an inner surface thereof facing an outer surface of said shaft, said grooves canted in a direction of desired fluid flow relative to a direction of desired rotation of said shaft;
- and
- a rotation receiving element, receiving rotary thrust, and operating to rotate said shaft relative to said second element.
1 more element
A bladeless pump, comprising:
- a rotating part, which has no blades thereon and which rotates to produce a fluid flow, wherein said rotating part is flexible, and an outer surface, surrounding said rotating part, said outer surface including grooves which are slanted at a specified angle.
A bladeless pump, comprising;
- a rotating part, which has no blades thereon and which rotates to produce a fluid flow, wherein said outer surface is substantially curved.
A pump, comprising:
- a shaft, which is rotatably mounted to rotate around a rotation axis, and which has substantially smooth outer surfaces;
- and
- a chamber surface, surrounding said shaft and having an inlet and outlet, wherein each of said shaft and said chamber surface are flexible, wherein said shaft and said chamber surface are each substantially curved.
A pump, comprising:
- a shaft, which is rotatably mounted to rotate around a rotation axis, and which has substantially smooth outer surfaces;
- and
- a chamber surface, surrounding said shaft and having an inlet and outlet, wherein each of said shaft and said chamber surface are flexible, wherein said first element has a curved portion, and said chamber surface is substantially straight.
A flexible pump, comprising:
- a shaft, formed of a flexible material, and formed without blades thereon;
- a chamber, surrounding said shaft, and formed with grooves on an inner surface thereof facing an outer surface of said shaft, said grooves canted in a direction of desired fluid flow relative to a direction of desired rotation of said shaft;
- and
- a rotation receiving element, receiving rotary thrust, and operating to rotate said shaft relative to said second element, wherein said first element and said second element are substantially curved.
1 more element
A flexible pump, comprising:
- a shaft, formed of a flexible material, and formed without blades thereon;
- a chamber, surrounding said shaft, and formed with grooves on an inner surface thereof facing an outer surface of said shaft, said grooves canted in a direction of desired fluid flow relative to a direction of desired rotation of said shaft;
- and
- a rotation receiving element, receiving rotary thrust, and operating to rotate said shaft relative to said second element, wherein said first element and said second element are substantially straight over an area of intersection therebetween, and said first element has a curved portion thereon in a location adjacent said rotation receiving element.
1 more element
Dependencies are inferred from the claim text.