Grease trap and filter apparatus
US5196040A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 7, 1990 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | May 7, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A grease filter and collection assembly for roof ventilators and the like includes a frame structure having a generally central aperture through which a grease discharge vent projects when the frame structure and trap assembly are installed surrounding the vent, and a replaceable grease-trapping material is removably secured in the frame structure so that the grease-trapping material is exposed within the aperture for trapping grease discharged from the vent. In a preferred embodiment, the frame structure is assembled from extruded frame members which integrally include a plurality of channels for securing and mounting the assembly for retaining the grease-trapping material within the frame structure. Upper and lower channels accommodate corner connections of the frame members. The frame members have side walls which peripherally enclose the grease-trapping material which is tucked between the upper and lower channel inwardly extending from the side wall. A preferred grease-trapping material includes a layered composite of grease filtering and trapping materials in which an upper-porous layer for trapping particulate debris is also permeable for passage of liquid grease therethroug…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.