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US 2011/0297865 A1Published application
Drain valve assembly
OwnerJimmi Gellertinventor
Life of this patent
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Abstract
The present invention concerns a drain valve assembly with a pop-up drain stopper for a drain opening. The drain valve assembly has an improved sealing mechanism whereby the drain valve assembly may be easily installed and, in addition, the interface between the drain valve assembly and the drain opening may be easily cleaned.
Claims12
A drain valve assembly for a drain opening, said assembly comprising:
- an upper member having a tubular body with an externally threaded portion and an annular flange having a lower sealing surface;
- a lower member having a tubular body comprising an internally threaded portion for engagement with the upper member and an annular upper surface for axially positioning the lower member relative to the upper member;
- and
- an annular resilient sealing member for sealing between the drain valve assembly and the drain opening;
- wherein:
- the annular resilient sealing member is provided between said lower sealing surface of the upper member and the annular upper surface of the lower member such that the annular resilient sealing member is adapted to be expanded in diameter and thereby pressed towards sides of the drain opening for sealing engagement when the surfaces are brought together by the engagement of the threaded portions of the upper and lower members.
3 more elements
Dependencies are inferred from the claim text.