Disposable tray sump foamer, assembly and methods
US5372281A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/0025
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A biological agent growth-limiting and cross contamination suppressing foaming assembly. The foaming assembly comprises a disposable foamable-liquid transport and foaming cartridge and a housing cooperatively used with the cartridge to produce and dispense foam from the cartridge. The cartridge comprises a low-cost package comprising a molded tray which provides cavities for liquid containing chambers, air and liquid communicating channels, and initially sealed but frangible ports and a liquid impervious sheet which covers an open face of the tray to seal otherwise open portions of the chambers, channels and ports. The housing comprises a vertical wall mounting plate, a cartridge accommodating and servicing cover hingeably affixed to the mounting plate, a pump which provides pressurized gas to produce the foam within the cartridge, and sharpened stems or shafts to open the frangible ports. Foamable-liquid is stored within the cartridge during shipment, foamed within the cartridge under pressure from the pump, and dispensed as a foam from a spout which is a part of the tray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.