Plastic scrim
US5038775A · kind A · utility
41Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1988 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Jan 4, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B23/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention disclosed is an improved scrim means for use in a breathing gas filter assembly which includes a pleated web filter medium. The improved scrim means is of a non-woven microorganism resistant synthetic polymeric material of sufficient rigidity to provide substantially continuous support to maintain the pleats of the filter medium in substantially uniformly spaced relationship, to expedite fluid flow in the plane of the web and to minimize nesting of the filter medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.