MUMBAI, India, Aug. 31 -- Intellectual Property India has published a patent application (202641101155 A) filed by Abi P Mathew; and Federal Institute Of Science Technology Fisat on August 21, 2026, for Low-Flush Urinal Drain Insert With A Micro-Volume Liquid Seal.
Inventors include Dr. Sumanlal Mr; Mr. Tom Anto; Dr. Abi P Mathew; Mr. Benson Eldho; and Mr. A. V Navaneeth Sagar.
The application for the patent was published on August 28, 2026, under issue no. 35/2026.
Abstract: Disclosed is a low-water consuming, drop-in S-trap urine drain cartridge designed for direct integration within standard sanitation pipelines to provide effective odor control with minimal flush dependency. The device features a highly dense spatial arrangement wherein a 50-degree diagonal flow baffle and a sub-miniature S-trap mechanism are nested inside a uniform 1-inch outer diameter cylindrical body. The engineered internal geometry utilizes a precise weir lip configuration to trap a small volume of standing fluid between 10 mL and 50 mL. This volume is sufficient to generate an airtight liquid barrier against sewer gas migration while permitting complete flush cleansing and replenishment under low-flow rates, making the cartridge ideal for water-saving retrofits. • Low water flushing • Odor control with s trap 1. Dimensional Integration: Stacking an inclined baffle and an S-trap inside a uniform 1-inch compact cylinder with exact low-flush retention ratios. 2. Specific Internal Geometry: The exact structural arrangement—the angle of the diagonal baffle, the placement of the internal weir lip, and how minimal water (10–50 mL) flushes and resets the seal without siphoning empty
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