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US 6,292,969 B1Granted
Swimming pool cleaner
AssigneeOak Nominees (PTY) LTD
InventorCarl Frederick Wilhelm Supra
Life of this patent
Estimating the term…
Abstract
A pool cleaner which includes an integrally moulded body with an elongate float which is embedded in the body and which has a length which is at least 25% of the length of the body. A biasing weight is also embedded in the body on an opposing side of the passage. A flow interrupting device controls water flow through a passage in the body. The float may be separately formed or it may be formed by foaming material from which the body is made.
Claims17
A pool cleaner comprising:
- a unitary one piece body with first and second non-coaxial passages that extend through the body with an inlet to the first and second passages and an outlet from the first and second passages at respective opposed ends of the passages,
- each of the first and second passages being selected from the following two constructions, (1) passage A with a minimum cross-sectional area at a position between the inlet and the outlet and with a cross-sectional area monotonically increasing in magnitude in each direction extending away from the position towards each respective end of the passage A, and (2) passage B with a minimum cross-sectional area at one end of the passage B and with a cross-sectional area monotonically increasing in magnitude in a direction extending away from the one end of the passage B towards an opposed end of the passage B;
- a chamber adjacent to the inlet;
- and
- a water flow interrupting device in the chamber.
2 more elements
A pool cleaner comprising:
- a unitary, one-piece body with a hollow passageway through said body that opens to an outlet at one end of said body and to an inlet at another end of said body, said passageway having longitudinal grooves on opposing interior sides;
- a generally planar longitudinal partition in said passageway with opposite edges that are carried in said grooves, said partition dividing said passageway into first and second passages that each extends a length of said passageway, each of said first and second passages having a minimum cross-sectional area at an end thereof and a cross-sectional area that monotonically increases towards another end thereof, an end of said partition at said inlet having a generally V-shaped groove;
- and
- a generally wedge-shaped water flow interrupter at said inlet, an apex of said wedge-shaped interrupter fitting into said V-shaped groove, said wedge-shaped interrupter being movable to interrupt water flow alternately to said first and second passages, said wedge-shaped interrupter having a range of motion defined by said V-shaped groove.
1 more element
A pool cleaner comprising:
- a unitary, one-piece body with a hollow passageway through said body that opens to an outlet at one end of said body and to an inlet at another end of said body, said passageway having longitudinal grooves on opposing interior sides;
- a generally planar longitudinal partition in said passageway with opposite edges that are carried in said grooves, said partition dividing said passageway into first and second passages that each extends a length of said passageway, each of said first and second passages having a minimum cross-sectional area at a position between said inlet and said outlet and a cross-sectional area that monotonically increases towards ends thereof from the position, an end of said partition at said inlet having a generally V-shaped groove;
- and
- a generally wedge-shaped water flow interrupter at said inlet, an apex of said wedge-shaped interrupter fitting into said V-shaped groove, said wedge-shaped interrupter being movable to interrupt water flow alternately to said first and second passages, said wedge-shaped interrupter having a range of motion defined by said V-shaped groove.
1 more element
Dependencies are inferred from the claim text.