Respirator having a compressible press fir filter element
US6216693A · kind A · utility
65Cited by
40References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1995 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Jan 20, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B23/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A respirator 10 includes a compressible filter element 12, a filter element retainer 14, and a face piece 16. The respirator is unique in that the filter element 12 compresses when installed in the retainer 14, allowing a friction fit to be maintained between the filter element 12 and retainer 14. The friction fit enables the filter element 12 to be readily replaced when its service life has expired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.