Diving face mask
US5642529A · kind A · utility
9Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Sep 28, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63C11/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A diving face mask comprising a purge valve is mounted in a predetermined region extending along a top and transversely opposite sides of a frame thereof and a tubular water purge channel provided inside said frame, said purge channel having an outlet at its upper end being in fluid-communication with said purge valve and an inlet at its lower end being open into said frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.