US5924420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Full face respirator mask having integral connectors disposed in lens area
Assignee: 3M Co
•
Filing: 1996-09-24
•
Granted: 1999-07-20
•
Expires: 2016-09-24
Abstract
Abstract A full face respirator mask (10) includes a face shield portion (12) with the seal (20) surrounding a lens portion (14). Inhalation ports (16) and an exhalation port (18) are formed at the lower portion of the lens (14). A center adapter (30) includes a nose cup (40) and an exhalation valve (38) in the center orifice (18). The inhalation ports (16,116) are placed at each side of the exhalation port (18) and include connector portions (50,150) formed with the lens (14) or ultrasonically welded to the lens (14). The connector portions (50) include male connectors (58) in a first embodiment and female connectors (150) in a second embodiment receiving complementary formed connectors of a breathable air source.
Inventors
- 👤 Joseph G. Reischel
- 👤 Vaughn B. Grannis
- 👤 David P. Knivsland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:25
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/08; A62B18/02; A62B18/082
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
A full face respirator mask that comprises: (a) a rigid plastic lens that has a transparent viewing portion and a port portion, the port portion being disposed beneath the viewing portion when the mask is viewed from a front elevation; (b) an exhalation port disposed in the port portion of the rigid plastic lens; (c) first and second air intake ports disposed in the port portion of the rigid plastic lens on opposing sides of the exhalation port; (d) first and second connectors that are integral with the rigid plastic lens in its port portion, the first and second connectors being configured for receiving first and second filter cartridges and being located on the port portion to allow intake air to be directed to the first and second intake ports, respectively; and (e) a face seal disposed on the full face respirator mask to seal the respirator over the wearer's eyes, nose, and mouth.
Claim 2
Dependent Claim
154 words
A full face respirator mask that comprises: (a) a rigid plastic lens that has a transparent viewing portion and a port portion, the port portion being disposed beneath the viewing portion when the mask is viewed from a front elevation; (b) an exhalation port disposed in the port portion of the rigid plastic lens; (c) first and second air intake ports disposed in the port portion of the rigid plastic lens on opposing sides of the exhalation port; (d) first and second connectors that are integral with the rigid plastic lens in its port portion, the first and second connectors being configured for receiving first and second filter cartridges and being located on the port portion to allow intake air to be directed to the first and second intake ports, respectively; and (e) a face seal disposed on the full face respirator mask to seal the respirator over the wearer's eyes, nose, and mouth.
Claim 3
Dependent Claim
30 words
A mask according to claim 1, wherein the first and second connectors each have a positive locking position stop point when rotatably engaged with first and second filter cartridges, respectively.
Claim 4
Dependent Claim
37 words
A mask according to claim 1, wherein the first and second connectors each comprise a bayonet type connector for engaging first and second cartridges that each have a complementary connector configured for engaging the bayonet type connector.
Claim 5
Dependent Claim
16 words
A mask according to claim 1, wherein the connectors and face shield comprise a monolithic element.
Claim 6
Dependent Claim
16 words
A mask according to claim 4, wherein the connectors are molded with the full face shield.
Claim 7
Dependent Claim
16 words
A mask according to claim 4, wherein the connectors are ultrasonically welded to the face shield.
Claim 8
Dependent Claim
27 words
A mask according to claim 1, wherein the connectors are each directionally configured for orienting each of the attachable first and second cartridges to a predetermined position.
Claim 9
Dependent Claim
30 words
A mask according to claim 1, wherein the connectors each form an orifice therethrough and wherein each connector includes tabs extending radially outward, and wherein the tabs comprise different widths.
References Cited (Backward Citations)
US35062A
Cited
US5080092A
Cited
US2740400A
Cited
US2905172A
Cited
US2951418A
Cited
US2965902A
Cited
US3146295A
Cited
DE1184646B
Cited
US3182658A
Cited
US3545436A
Cited
US3680555A
Cited
US4057057A
Cited
US4069516A
Cited
USD249368S
Cited
US4167185A
Cited
US4881538A
Cited
US4574799A
Cited
US4595003A
Cited
US4739755A
Cited
US4841953A
Cited
USRE35062E
Cited
WO1991001159A1
Cited
US5069205A
Cited
EP0511593A1
Cited
EP0511592A1
Cited
WO1992019322A1
Cited
WO1993014819A1
Cited
GB2268076A
Cited
US5454369A
Cited
WO1995009676A1
Cited
US5555569A
Cited
USD378610S
Cited
USD388872S
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-07-19 | 2003-01-18 | 2003-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-07-19 | 2007-01-18 | 2007-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-07-19 | 2011-01-18 | 2011-07-20 | $7700.00 | Window Closed / Lapsed |