Half-face mask assembly
US4960121A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1987 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Mar 18, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B18/084
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An improved half-face mask assembly (10) which can be easily donned and doffed. The assembly includes a hard shell (12), a rubber-like face seal (14), a head harness assembly (16) and two harness anchors and adjusters (18). These parts can be readily assembled or disassembled. Face seals of differing sizes may be assembled to the hard shell. An improved seal is provided between a hard shell (12) and an associated rubber-like face seal (14). A two point head harness suspension system is typically provided althrough an optional neck strap assembly may be utilized with the half-face mask assembly. In addition, a novel one piece harness anchor and adjuster is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.