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US 5,961,212 AGranted
Screw with continuous and discontinuous blades for water processing apparatus
AssigneeAquasystems International N.V.
InventorJohny Hector Haegeman
Life of this patent
Estimating the term…
Abstract
A water treatment apparatus comprising a power source driving a shaft supporting a helicoidal, spiral-shaped screw having an upper end part and a lower end part and fitted round at least part of the shaft, such that water is sucked up or impelled downwards, the screw comprising at least one continuous screw blade, and at least one discontinuous screw blade near at least one of its end parts.
Claims7
A water treatment apparatus comprising
- a power source;
- a shaft driven by said power source;
- and
- a spiral-shaped screw supported on said shaft;
- said screw having a length extending from an upper end part of said screw to a lower end part of said screw and being fitted around at least part of said shaft such that water is sucked up or impelled downwards;
- said screw comprising one or more continuous screw blades extending over the length of said screw, and one or more discontinuous screw blades located within the length of said screw and near said upper end part or said lower end part, wherein said continuous and discontinuous screw blades are wound in a common direction.
3 more elements
A surface aerator apparatus comprising:
- a power source;
- a shaft driven by said power source;
- and
- a spiral-shaped screw supported on said shaft;
- said screw having a length extending from an upper end part of said screw to a lower end part of said screw and being fitted around at least part of said shaft such that water is sucked up;
- said screw comprising one or more continuous screw blades extending over the length of said screw, and one or more discontinuous screw blades located within the length of said screw and near said upper end part or said lower end part, wherein said continuous and discontinuous screw blades are wound in a common direction.
3 more elements
A water mixer apparatus comprising:
- a power source;
- a shaft driven by said power source;
- and
- a spiral-shaped screw supported on said shaft;
- said screw having a length extending from an upper end part of said screw to a lower end part of said screw and being fitted around at least part of said shaft such that water is impelled downwards;
- said screw comprising at least one continuous screw blade extending over the length of said screw, and at least one discontinuous screw blade located within the length of said screw and near said upper end part or said lower end part, wherein said continuous and discontinuous screw blades are wound in a common direction.
3 more elements
Dependencies are inferred from the claim text.