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US 8,757,192 B2Granted
In valves
OwnerToby Priestlyinventor
Life of this patent
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Abstract
This invention relates to a valve comprising a housing having first and second apertures for the ingress and egress of fluid into/from a passageway located within the housing extending indirectly from the first to the second aperture. The passageway forms an air-lock. The valve further comprises at least one bleed valve for allowing fluid out of the passageway at a rate slower than fluid is able to enter one of the apertures. A liquid entering one of the apertures is prohibited from passing along the passageway to the other of the apertures until substantially all air within the valve has bled out of the bleed valve.
Claims23
A valve, said valve comprising:
- a housing having first and second apertures for the ingress and egress of fluid into/from a passageway located within the housing, said passageways extending indirectly from the first to the second aperture and comprising means for creating an air-lock;
- the valve further comprising at least one bleed means for allowing fluid to bleed out of the passageway at a rate slower than fluid is able to enter one of the apertures;
- and
- wherein a liquid entering the first aperture is prohibited from passing along the passageway to the second aperture until substantially all air within the valve has bled out of the bleed means;
- and
- a liquid entering the second aperture is prohibited from passing along the passageway to the first aperture until substantially all air within the valve has bled out of the bleed means.
3 more elements
Dependencies are inferred from the claim text.