Patent US4875477A successfully refreshed from Google Patents.
US4875477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective mask having a built-in sensor for monitoring vital functions
Assignee: Draegerwerk AG and Co KGaA
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Filing: 1988-06-27
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Granted: 1989-10-24
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Expires: 2008-06-27
Abstract
Abstract An arrangement for monitoring vital functions includes at least one sensor held against the body. The arrangement of the invention provides a simple and reliable positioning of the sensor even under difficult conditions of use especially with breathing protection equipment. The arrangement according to the invention requires no additional holding devices exclusively for the purpose of mounting the sensor which could possibly be disturbing to the wearer. The sensor is mounted on the inner side of the breathing protective mask.
Inventors
- 👤 Christine Waschke
- 👤 Lothar Topfer
- 👤 Alfred Rath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:49
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6801; A61B5/6802; A61B5/6803; A61B5/02; A61B5/024; A61B5/02438; A62; A62B; A62B18/00; A62B18/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
Arrangement for monitoring vital functions, the arrangement comprising: a breathing protective mask having an inner surface facing a wearer thereof; a sensor for sensing a vital function of the wearer when held in contact engagement with the head of the wearer; said mask having sealing rim means for defining an uninterrupted seal with the head of the wearer of said mask; cavity means disposed completely within said sealing rim means so as to ensure the integrity of said seal; and, said cavity means being formed in said sealing rim means and said sensor being held in said cavity means only by said sealing rim means so as to cause said sensor to be in firm contact engagement with the head of the wearer when the mask is worn.
Claim 2
Dependent Claim
128 words
Arrangement for monitoring vital functions, the arrangement comprising: a breathing protective mask having an inner surface facing a wearer thereof; a sensor for sensing a vital function of the wearer when held in contact engagement with the head of the wearer; said mask having sealing rim means for defining an uninterrupted seal with the head of the wearer of said mask; cavity means disposed completely within said sealing rim means so as to ensure the integrity of said seal; and, said cavity means being formed in said sealing rim means and said sensor being held in said cavity means only by said sealing rim means so as to cause said sensor to be in firm contact engagement with the head of the wearer when the mask is worn.
Claim 3
Dependent Claim
11 words
The arrangement of claim 1, said sensor being a temperature detector.
Claim 4
Dependent Claim
12 words
The arrangement of claim 1, said sensor being a heart rate detector.
Claim 5
Dependent Claim
131 words
Arrangement for monitoring vital functions, the arrangement comprising: a breathing protective mask having an inner surface facing a wearer thereof; a sensor for sensing a vital function of the wearer when held in firm contact engagement with the head of the wearer; said mask having a peripheral region at which the mask is placed on the head of the wearer; two mutually adjacent sealing beads extending around said peripheral region; said sealing beads defining an uninterrupted seal with the head of the wearer; said mutually adjacent sealing beads conjointly defining a cavity therebetween; and, said sensor being seated in said cavity so as to be held in place therein by said sealing beads so as to cause said sensor to be in firm contact engagement with the wearer of the mask.
Claim 6
Dependent Claim
131 words
Arrangement for monitoring vital functions, the arrangement comprising: a breathing protective mask having an inner surface facing a wearer thereof; a sensor for sensing a vital function of the wearer when held in firm contact engagement with the head of the wearer; said mask having a peripheral region at which the mask is placed on the head of the wearer; two mutually adjacent sealing beads extending around said peripheral region; said sealing beads defining an uninterrupted seal with the head of the wearer; said mutually adjacent sealing beads conjointly defining a cavity therebetween; and, said sensor being seated in said cavity so as to be held in place therein by said sealing beads so as to cause said sensor to be in firm contact engagement with the wearer of the mask.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |