Pressure flush tank for use in a toilet enclosure
US5857224A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Oct 14, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D3/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pressure flush tank for toilets is formed and adapted to be located within a toilet enclosure and is preferably formed of a non-metallic material such as plastic. The pressure flush tank has an essentially rectangular vertical cross section and an essentially rectangular horizontal cross section, with the tank including an upper housing portion and a lower housing portion. There is a peripheral projection on the lower surface of the upper housing portion and a peripheral recess along a facing surface of the lower housing portion, with the projection being positioned within and ultrasonically welded to the recess. Each of the housing portions has side walls and end walls, with each housing portion having reinforcing interior walls extending between opposing side walls to provide strength and rigidity for the pressure flush tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.