Toilet odor venting apparatus with improved retrofit capability
US5519899A · kind A · utility
Inventor
Key dates
| Filing date | Sep 26, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Sep 26, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D9/052
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A toilet odor venting apparatus which fits over the top tank of a toilet in place of the usual tank cover. The apparatus draws air from the toilet bowl through the flush ring into the interior of the tank and then into the room in which the toilet is located. The apparatus includes a suction blower assembly which includes a low profile, disk-shaped impeller journalled for rotation about a vertical axis and one or more low profile electric drive motors, which are preferably DC and which operate at supersynchronous speed. The assembly further includes a special coupling for coupling rotary power from the motors to the impeller with the coupling assembly including a driven wheel journalled for rotation about a vertical axis and a drive wheel journalled for rotation about a horizontal axis. The electric motor is preferably powered by DC current from a battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.