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US 9,038,661 B2Granted
Valve device
OwnerCheng-Yu Lininventor
Life of this patent
Estimating the term…
Abstract
A drain valve device includes a base and a control unit removably disposed in the base. The control unit includes a valve and a resilient component positioned between the valve and the base. The drain valve device opens automatically as soon as water entering the base exceeds a predetermined level. The drain valve device shuts automatically as soon as water entering the base is less than a predetermined level. The drain valve device has advantages, namely simple structure, convenient of use, prevention of intrusion of odor and pests, easy to clean, and unlikely to get clogged.
Claims11
A drain value device, comprising:
- a base being hollow and cylindrical and having a bottom at which at least one through hole is disposed;
- a cover disposed at the base and having a drain vent;
- and
- a control unit comprising a hollow cylindrical valve, the valve having a top rim corresponding in position to the drain vent, wherein a baffle board is disposed in the valve to partition into a water storage space above and a receiving space below, the receiving space receiving a resilient component holding between the baffle board and the base such that, as soon as an amount of water entering the water storage space exceeds a predetermined level, a resilient force of the resilient component is counterbalanced to thereby allow the valve to move downward and away from the cover, the resilient component being a compression spring with a spring constant of 2×10−3 to 3×10 kgf/mm,
- wherein the cover is tablet-shaped and extends downward to form a flange enclosing the drain vent, and
- wherein a first circumferential groove is disposed at the top rim of the valve and adapted to hold the flange.
3 more elements
Dependencies are inferred from the claim text.