UPDATE! 3rd Nov 2015:
Cyril was granted a patent with Serial No. GB2502470 for the Toilet Stopper Invention.
The Flood Toilet Sewage Stopper is a quick-fit, hand installed,standby device designed to instantly seal ground floor and basement toilets that are at risk of reverse-flowing, foul water, entering from the sewerage system during flooding.
See the problem that the Toilet Stopper is designed to solve here:
TIP: Fit Small NRVs to showers, sinks & baths to stop other floods.
The Flood Toilet Sewage Stopper is intended to be stored locally to the protected toilet, ready for instant deployment or they may be fitted prior to leaving the property, perhaps to attend work or to go on holiday.Hand contact with unhygienic toilet/stopper parts is avoided.
Optional, replaceable seal covers may be supplied, thus creating an additional point of sale product (together with small bore one-way valves for ancillary pipelines) to increase ongoing sale income from this consumable purchasing cycle.
N.B. As UK & PCT patents are applied for; there is scope for a manufacturer to become the sole marketing body in as many as 146 participating countries.