Device for connecting a fan to a face mask filter
US5404874A · kind A · utility
9Cited by
4References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Mar 8, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/006
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A device for connecting a fan to the inlet of a face mask filter including an adapter having resilient arms to fasten it to the filter and an air duct extends from the fan outlet to the filter inlet. The adapter has an internal seal to connect the outlet end of the air duct to the inlet of the filter. A housing for the fan is partly molded directly on the adapter adjacent to the inlet end of the air duct. The air duct is short and straight and has low flow resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.