US5601078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breathing apparatus with a display unit
Assignee: Draegerwerk AG and Co KGaA
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Filing: 1995-05-22
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Granted: 1997-02-11
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Expires: 2015-05-22
Abstract
Abstract A breathing apparatus with a display unit for the transmission of measured data via a display field of the display unit into the field of vision of a person wearing the unit. The readability of the measured data displayed is improved in daylight with simultaneously reduced energy demand. The display field includes an LC display, which is at least transparent for transmission radiation. An optical concentrator is provided, which collects the ambient light via a light entering surface and emits the collected light via a light exiting surface.
Inventors
- 👤 Uwe Schaller
- 👤 Detlef Wolter
- 👤 Hansjochen Schuck
- 👤 Ralf Drews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:32
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/08; G; G01; G01D; G01D11/00; G01D11/28; G01D7/00; G01D7/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
217 words
A breathing apparatus with a display unit for the transmission of measured data via a display field of the display unit into a field of vision of the person wearing the breathing apparatus, comprising: a breathing mask with mask body; an LC display forming said display field, said LC display being viewable from within the mask body, said LC display being transparent at least for transmission radiation, said breathing mask having a face shield, a tube being provided between said LC display and said face shield, whereby the transmission radiation emerging from the LC display is directed at least piece-wise through said tube to said face shield, a sealing element being provided between said tube and said face shield; an optical concentrator, including means disposed outside said mask body for collecting ambient light via a light entering surface and including means for emitting collected light via a light exiting surface toward said LC display, said optical concentrator being provided as said transmission radiation source for said LC display; an additional light source positioned for irradiating said LC display; and a photoelectric sensor positioned for detecting ambient light intensity, said photoelectric sensor being actively connected to said additional light source for controlling a light intensity of said additional light source as a function of the ambient light intensity.
Claim 2
Dependent Claim
217 words
A breathing apparatus with a display unit for the transmission of measured data via a display field of the display unit into a field of vision of the person wearing the breathing apparatus, comprising: a breathing mask with mask body; an LC display forming said display field, said LC display being viewable from within the mask body, said LC display being transparent at least for transmission radiation, said breathing mask having a face shield, a tube being provided between said LC display and said face shield, whereby the transmission radiation emerging from the LC display is directed at least piece-wise through said tube to said face shield, a sealing element being provided between said tube and said face shield; an optical concentrator, including means disposed outside said mask body for collecting ambient light via a light entering surface and including means for emitting collected light via a light exiting surface toward said LC display, said optical concentrator being provided as said transmission radiation source for said LC display; an additional light source positioned for irradiating said LC display; and a photoelectric sensor positioned for detecting ambient light intensity, said photoelectric sensor being actively connected to said additional light source for controlling a light intensity of said additional light source as a function of the ambient light intensity.
Claim 3
Dependent Claim
33 words
A breathing apparatus according to claim 1, further comprising a holding clamp which is detachable on said mask body, said optical concentrator with said light entering surface being attached along said holding clamp.
Claim 4
Dependent Claim
17 words
A breathing apparatus according to claim 2, wherein said LC display is arranged on said holding clamp.
Claim 5
Dependent Claim
35 words
A breathing apparatus according to claim 1, further comprising means for deflecting said LC display, including an optical transmitter for deflecting said LC display into a field of vision of the person wearing the unit.
Claim 6
Dependent Claim
26 words
A breathing apparatus according to claim 1, wherein a ball-and-socket joint is provided between said light entering surface of said optical concentrator and said LC display.
Claim 7
Dependent Claim
21 words
A breathing apparatus according to claim 1, wherein said optical concentrator is formed of a fluorescent, monochromatic plastic with light-collecting properties.
Claim 8
Dependent Claim
14 words
A breathing apparatus according to claim 1, wherein said optical concentrator is essentially rod-shaped.
Claim 9
Dependent Claim
22 words
A breathing apparatus according to claim 1, wherein said optical concentrator is adjusted to a wavelength and a range of 550 nm.
Claim 10
Dependent Claim
181 words
A breathing apparatus, comprising: a breathing mask with a display unit, said display unit being provided for the transmission of data via a display field of the display unit into the field of vision of the person wearing the unit; an LC display forming said display field, said LC display being transparent at least for transmission radiation, said LC display having a viewing side and a transmission radiation supply side; an optical concentrator, formed of a fluorescent, monochromatic plastic with light collecting properties including means disposed outside said mask body for collecting ambient light via a light entering surface and including means for emitting collected light via a light exiting surface toward said LC display transmission radiation supply side, said optical concentrator being provided as a source of said transmission radiation for said LC display, said breathing mask including a face shield and a tube provided between said LC display and said face shield, transmission radiation emerging from said LC display being directed through said robe to said face shield, a sealing element provided between said tube and said face shield.
Claim 11
Dependent Claim
181 words
A breathing apparatus, comprising: a breathing mask with a display unit, said display unit being provided for the transmission of data via a display field of the display unit into the field of vision of the person wearing the unit; an LC display forming said display field, said LC display being transparent at least for transmission radiation, said LC display having a viewing side and a transmission radiation supply side; an optical concentrator, formed of a fluorescent, monochromatic plastic with light collecting properties including means disposed outside said mask body for collecting ambient light via a light entering surface and including means for emitting collected light via a light exiting surface toward said LC display transmission radiation supply side, said optical concentrator being provided as a source of said transmission radiation for said LC display, said breathing mask including a face shield and a tube provided between said LC display and said face shield, transmission radiation emerging from said LC display being directed through said robe to said face shield, a sealing element provided between said tube and said face shield.
Claim 12
Dependent Claim
19 words
A breathing apparatus according to claim 9, further comprising an additional light source positioned for irradiating said LC display.
Claim 13
Dependent Claim
46 words
A breathing apparatus according claim 9, further comprising a photoelectric sensor positioned for detecting collected light intensity, said photoelectric sensor being actively connected to said additional light source for controlling a light intensity of said additional light source as a function of the collected light intensity.
Claim 14
Dependent Claim
41 words
A breathing apparatus according to claim 9, further comprising a breathing mask with a mask body and a holding clamp which is detachable on said mask body, said optical concentrator with said light entering surface being attached along said holding clamp.
Claim 15
Dependent Claim
17 words
A breathing apparatus according to claim 12, wherein said LC display is arranged on said holding clamp.
Claim 16
Dependent Claim
26 words
A breathing apparatus according to claim 9, further comprising means for deflecting said LC display into a field of vision of the person wearing the unit.
Claim 17
Dependent Claim
26 words
A breathing apparatus according to claim 9, wherein a ball-and-socket joint is provided between said light entering surface of said optical concentrator and said LC display.
Claim 18
Dependent Claim
181 words
A breathing apparatus, comprising: a breathing mask with a display unit, said display unit being provided for the transmission of data via a display field of the display unit into the field of vision of the person wearing the unit; an LC display forming said display field, said LC display being transparent at least for transmission radiation; an optical concentrator, formed of a fluorescent, monochromatic plastic with light-collecting properties providing means disposed outside said mask body for collecting ambient light via a light entering surface and including means for emitting collected light via a light exiting surface, said light exiting surface being directed toward said LC display to backlight said LC display for providing said transmission radiation source for said LC display; an additional light source positioned for irradiating said LC display either directly or via reflection at said light exiting surface; and a photoelectric sensor positioned for detecting collected light intensity, said photoelectric sensor being actively connected to said additional light source for controlling a light intensity of said additional light source as a function of said ambient light intensity.
Claim 19
Dependent Claim
181 words
A breathing apparatus, comprising: a breathing mask with a display unit, said display unit being provided for the transmission of data via a display field of the display unit into the field of vision of the person wearing the unit; an LC display forming said display field, said LC display being transparent at least for transmission radiation; an optical concentrator, formed of a fluorescent, monochromatic plastic with light-collecting properties providing means disposed outside said mask body for collecting ambient light via a light entering surface and including means for emitting collected light via a light exiting surface, said light exiting surface being directed toward said LC display to backlight said LC display for providing said transmission radiation source for said LC display; an additional light source positioned for irradiating said LC display either directly or via reflection at said light exiting surface; and a photoelectric sensor positioned for detecting collected light intensity, said photoelectric sensor being actively connected to said additional light source for controlling a light intensity of said additional light source as a function of said ambient light intensity.
Claim 20
Dependent Claim
119 words
As breathing apparatus according to claim 16, further comprising a holding clamp which is detachable on said mask body, said optical concentrator with said light emitting surface being attached along said holding clamp, said breathing mask including a face shield, a tube provided between said LC display and said face shield, whereby said transmission radiation emerging from said LC display is directed through said tube to said face shield, a sealing element being provided between said tube and said face shield and a ball and socket joint provided between said light entering surface of said optical concentrator and said LC display for aligning the display unit with a pupil of an eye of a wearer of the breathing apparatus.
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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) | 2000-02-11 | 2000-08-12 | 2001-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-11 | 2004-08-12 | 2005-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-11 | 2008-08-12 | 2009-02-11 | $7700.00 | Window Closed / Lapsed |