 |
|
|
|
|
|
 Title: |
US4960121:
Half-face mask assembly
[ Derwent Title ]
|
| Country: |
US United States of America
|
| |
| Inventor: |
Nelson, James E.; Williamsville, NY
Castro, Valentine A.; Pasadena, CA
Esparza, Noemi; Pasadena, CA
|
| Assignee: |
Figgie International, Inc., Willoughby, OH
other patents from FIGGIE INTERNATIONAL INC. (194460) (approx. 386)
News, Profiles, Stocks and More about this company
|
| Published / Filed: |
1990-10-02
/ 1987-03-18
|
| Application Number: |
US1987000027567
|
| IPC Code: |
Advanced:
A62B 18/02;
A62B 18/08;
IPC-7:
A62B 18/08;
|
| ECLA Code: |
A62B18/02A; A62B18/08B;
|
| U.S. Class: |
Current:
128/206.24;
128/206.27;
128/207.11;
D24/110.4;
Original:
128/206.24;
128/206.27;
128/207.11;
|
| Field of Search: |
128/201.22,201.23,201.24,203.29,204.18,205.25,206.12,206.21,206.23,206.24,206.27,206.28,207.11,207.17
024/669,702
|
| Priority Number: |
| 1987-03-18 |
US1987000027567 |
|
| 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.
|
| Attorney, Agent or Firm: |
Hodgson, Russ, Andrews, Woods & Goodyear ;
|
| Primary / Asst. Examiners: |
Hindenburg, Max; Lacyk, J. P.
|
| INPADOC Legal Status: |
Show legal status actions
Family Legal Status Report
|
| Family: |
Show 2 known family members
|
First Claim:
Show all 17 claims |
What is claimed is:
1. A half-face mask comprising:
- a hard shell provided with a U-shaped peripheral edge portion having spaced apart inner and outer legs and a bight portion which defines a channel open to the forward side;
- an elastomeric face seal removably secured to said hard shell, the face seal including a U-shaped peripheral edge, a skirt, and face contacting portion, the U-shaped peripheral edge having inner and outer legs and a bight portion which defines a channel open to the rear side, the U-shaped peripheral edge of the face seal being secured to the U-shaped peripheral edge of portion of the hard shell in interlocking relationship, the inner leg of the U-shaped peripheral edge of the face seal being received between the inner and the outer legs of the U-shaped peripheral edge portion of the hard shell, and the skirt having a portion parallel to said U-shaped peripheral edge of the face seal and lying against a back portion of the U-shaped peripheral edge portion of the hard shell, the skirt extending from the face seal around the back of the bight portion and the inner leg of the U-shaped peripheral edge portion, the skirt being in contact with the inner leg of the U-shaped peripheral edge portion of the hard shell; and
- head harness means secured to the hard shell for holding the hard shell and face seal onto the face of a wearer.
|
| Background / Summary: |
Show background / summary
|
| Drawing Descriptions: |
Show drawing descriptions
|
| Description: |
Show description
|
| Forward References: |
Show 87 U.S. patent(s) that reference this one
|
