Internal trap drain with adjustable height strainer and high mass seal
OwnerMichael Joab Cotterinventor
Life of this patent
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Abstract
An internal trap drain with large volume/high mass water seal for improved absorption of pressure fluctuations and extended duration of seal against evaporation in low-use conditions. Includes adjustable height strainer and water seal-protected weep holes.
Claims4
An internal trap drain wherein the trap seal is formed by the interposition of an inner bowl filled with liquid and an externally-threaded adjustable height cylindrical strainer with axis perpendicular to the surface of said liquid and having a top end enclosed by strainer grid and a bottom end open and submerged below said surface and in which the adjustable strainer/seal is constructed and arranged to provide a large volume of liquid to create the seal and eliminate sewer gases thereby eliminating the need for the p-trap which conventional drains require;
- wherein the improvement comprises a high-volume, high mass seal to oppose sewer gases.
Dependencies are inferred from the claim text.