US5773826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame detector and protective cover with wide spectrum characteristics
Assignee: Honeywell International Inc
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Filing: 1996-03-01
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Granted: 1998-06-30
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Expires: 2016-03-01
Abstract
Abstract The present invention relates to a flame detector and protective cover with wide spectrum characteristics. The novel flame detector has wide spectrum sensitivity, which facilitates increased sensitivity to any sign of a flame or fire. The protective cover has wide spectrum transmittance characteristics. The protective cover facilitates reduced cleaning requirements and less disruption of the automated process for cleaning purposes. The wide spectrum transmittance characteristics of the protective cover enable it to be used with any flame detector utilizing non-ultraviolet sensing techniques.
Inventors
- 👤 David A. Castleman
- 👤 Chris A. Selstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:48
CPC Classifications
G; G08; G08B; G08B29/00; G08B29/18; G08B29/20; G08B29/24; G08B17/00; G08B17/12; G08B25/00; G08B25/002
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
92 words
A protective cover for use with a flame detector disposed within a housing having a viewing window, said flame detector with sensitivity for a visible band, near band infrared, and a wide infrared spectrums, said protective cover for preventing accumulation of paint, grime or the like on the viewing window, comprising: a one-piece configuration shaped to completely surround said viewing window, said one-piece configuration having wide spectrum transmittance characteristics that transmit radiant energy in said visible band, said near band, and said wide infrared spectrums to which said flame detector is sensitive.
Claim 2
Dependent Claim
92 words
A protective cover for use with a flame detector disposed within a housing having a viewing window, said flame detector with sensitivity for a visible band, near band infrared, and a wide infrared spectrums, said protective cover for preventing accumulation of paint, grime or the like on the viewing window, comprising: a one-piece configuration shaped to completely surround said viewing window, said one-piece configuration having wide spectrum transmittance characteristics that transmit radiant energy in said visible band, said near band, and said wide infrared spectrums to which said flame detector is sensitive.
Claim 3
Dependent Claim
40 words
A protective cover according to claim 1, wherein said one-piece configuration further comprising: a circular portion with a groove running along its circumference; and a flange located at a base of said circular portion with a plurality of reinforcing members.
Claim 4
Dependent Claim
43 words
A protective cover for use with a flame detector according to claim 1, wherein said wide spectrum transmittance characteristics of said one-piece configuration accommodate transmission of radiant energy including visible and infrared (IR) energy within a range of 700 nanometers to 5 nanometers.
Claim 5
Dependent Claim
27 words
A protective cover for use with a flame detector according to claim 1, wherein said one-piece configuration is fabricated from a clear material with rigidity and resilience.
Claim 6
Dependent Claim
23 words
A protective cover for use with a flame detector according to claim 1, wherein said one-piece configuration is fabricated from polyvinyl chloride (PVC).
Claim 7
Dependent Claim
24 words
A protective cover for use with a flame detector according to claim 1, wherein said one-piece configuration comprises a coating of an anti-static agent.
Claim 8
Dependent Claim
19 words
A protective cover for use with a flame detector according to claim 6, wherein said anti-static agent is "ORVIS®-K."
Claim 9
Independent Claim
105 words
An apparatus for flame detection within a given monitored area, further comprising: a flame detector disposed within a housing having a viewing window, said flame detector comprising a sensor array with wide spectrum sensitivity including visible band, near band infrared, and wide infrared spectrums for detecting any ignition within said monitored area; and a protective cover for use with said flame detector and for preventing accumulation of paint, grime or the like on said viewing window that may impact said wide spectrum sensitivity of said flame detector, said protective cover having wide spectrum transmittance characteristics that match the wide spectrum sensitivity of said flame detector.
Claim 10
Independent Claim
105 words
An apparatus for flame detection within a given monitored area, further comprising: a flame detector disposed within a housing having a viewing window, said flame detector comprising a sensor array with wide spectrum sensitivity including visible band, near band infrared, and wide infrared spectrums for detecting any ignition within said monitored area; and a protective cover for use with said flame detector and for preventing accumulation of paint, grime or the like on said viewing window that may impact said wide spectrum sensitivity of said flame detector, said protective cover having wide spectrum transmittance characteristics that match the wide spectrum sensitivity of said flame detector.
Claim 11
Dependent Claim
22 words
An apparatus according to claim 8, wherein said protective cover further comprises: a one-piece configuration shaped to completely surround said viewing window.
Claim 12
Dependent Claim
47 words
An apparatus for flame detection within a given monitored area according to claim 8, wherein said one-piece configuration further comprises: a cylindrical portion with a groove running along its circumference; and a flange located at a base of said circular portion with a plurality of reinforcing members.
Claim 13
Dependent Claim
43 words
An apparatus for flame detection within a given monitored area according to claim 8, wherein said wide spectrum transmittance characteristics of said one-piece configuration accommodate transmission of radiant energy including visible and infrared (IR) within a range of 700 nanometers to 5 nanometers.
Claim 14
Dependent Claim
28 words
An apparatus for flame detection within a given monitored area according to claim 8, wherein said one-piece configuration is fabricated from a clear material with rigidity and resilience.
Claim 15
Dependent Claim
24 words
An apparatus for flame detection within a given monitored area according to claim 8, wherein said one-piece configuration is fabricated from polyvinyl chloride (PVC).
Claim 16
Dependent Claim
25 words
An apparatus for flame detection within a given monitored area according to claim 8, wherein said one-piece configuration comprises a coating of an anti-static agent.
Claim 17
Dependent Claim
20 words
An apparatus for flame detection within a given monitored area according to claim 14, wherein said anti-static agent is "ORVIS®-K."
Claim 18
Dependent Claim
29 words
An apparatus for flame detection with a given monitored area according to claim 8, further comprising: a computer for processing data on radiant energy supplied by said sensor array.
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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) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |