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US 9,027,172 B2Granted
Drain valve core
OwnerGiovanni Fimainventor
Life of this patent
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Abstract
Various embodiments of a device for regulating a fluid flow are described that can include first and second downwardly-sloping valves that are biased in a closed position to prevent odors from escaping the device. The device can also include first and second downwardly-sloping valve seats, and configured such that an end portion of the first valve can be seated beneath the first valve seat and an end portion of the second valve can be seated beneath the second valve seat when the first and second valves are in a closed position, respectively.
Claims17
A device for regulating a fluid flow through a drain, comprising:
- a housing;
- an insert that is user-removable from the housing;
- downwardly-sloping first valve configured to be biased in a closed position, and having a diaphragm disposed about a post with radially decreasing rigidity;
- and
- wherein a bottom surface of the first valve comprises ribs configured to strenghthen the first valve.
2 more elements
Dependencies are inferred from the claim text.