Tub box
US6264056A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Jun 29, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F5/0407
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tub box for receiving a drain trap is formed from two substantially identical plastic housing portions each including one or more round knockouts in one or more side walls of the housing portions and one or more edge flange knockouts in an edge flange of each housing portion and side walls in line with and terminating in close proximity to the respective round knockouts. Pull tabs on the round knockouts facilitate removal of the round knockouts from the housing portions and limit the amount of nesting of the housing portions inside one another when stacked for storage and shipment so the housing portions can easily be pulled apart when desired. A lip protrudes axially outwardly from the radial outer edge of the edge flange of each housing portion around one half only of the periphery of each edge flange for overlapping engagement with the outer edge of the edge flange of an other housing portion when the edge flanges of two housing portions are placed in engagement with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.