US3653263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared temperature sensor and control for use with heated, moving bodies
Assignee: IRTRONICS INCORPORATED A CORP OF DE
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Filing: 1969-07-15
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Granted: 1972-04-04
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Expires: 1989-07-15
Abstract
Abstract A temperature sensor is provided for measuring infrared radiation from a heated, moving processing device. The measurement is made from a ''''black body'''' cavity extending within the device being measured and so provides greater accuracy of readings. If the device being measured is cylindrical and rotates, the cavity is along the edge of the rotational surface and may be subdivided so as to provide a chopper for the readings. Control circuitry associated with the infrared detector allows the sensor to control heating elements within the device.
Inventors
- 👤 Richard R Poole
- 👤 David D Bulkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:56
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/0022; G01K; G01K13/00; G01K13/04; G01K13/08; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/27
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
82 words
The method measuring temperature of the surface of a rotating body, said body having a cylindrical configuration and rotating about its axis, and said body having a groove along one edge thereof defining a black body radiator, said method including the steps of positIoning an infrared detector adjacent to said groove to detect and measure infrared radiation from said groove while said body is rotating, and thereafter using said detected and measured radiation as a measure of the temperature of said surface.
Claim 2
Independent Claim
82 words
The method measuring temperature of the surface of a rotating body, said body having a cylindrical configuration and rotating about its axis, and said body having a groove along one edge thereof defining a black body radiator, said method including the steps of positIoning an infrared detector adjacent to said groove to detect and measure infrared radiation from said groove while said body is rotating, and thereafter using said detected and measured radiation as a measure of the temperature of said surface.
Claim 3
Dependent Claim
125 words
Apparatus for determining the surface temperature of a moving body by use of infrared emissions, said apparatus including said moving body with said surface, said body having an open-ended cavity therein adjacent said surface and moving therewith but not interrupting said surface, said moving cavity defining an infrared radiator, an infrared detector positioned adjacent said moving cavity to receive and measure infrared radiation from said moving cavity, said detector being calibrated relative to the temperature of said surface, whereby said detector may determine the surface temperature of said body by measurement of said infrared radiation, said body being rotatable and including an interrupter integral with said body and positioned over said cavity to cause said radiation to be pulsed when said body is in motion.
Claim 4
Dependent Claim
125 words
Apparatus for determining the surface temperature of a moving body by use of infrared emissions, said apparatus including said moving body with said surface, said body having an open-ended cavity therein adjacent said surface and moving therewith but not interrupting said surface, said moving cavity defining an infrared radiator, an infrared detector positioned adjacent said moving cavity to receive and measure infrared radiation from said moving cavity, said detector being calibrated relative to the temperature of said surface, whereby said detector may determine the surface temperature of said body by measurement of said infrared radiation, said body being rotatable and including an interrupter integral with said body and positioned over said cavity to cause said radiation to be pulsed when said body is in motion.
Claim 5
Dependent Claim
38 words
Apparatus as set forth in claim 2 in which said body is a cylindrical roll, said surface is the outer surface of said drum, and said cavity is a cylindrical groove beginning at one edge of said roll.
Claim 6
Dependent Claim
62 words
Apparatus as set forth in claim 3 including a chopper plate mounted on said edge and over said groove, said plate having openings therein partially exposing said groove, said openings being of uniform length and regularly spaced over said groove, whereby, when said roll is rotated, said plate will act as an infrared chopper to produce a pulsed output in said detector.
Claim 7
Dependent Claim
40 words
Apparatus as set forth in claim 4 in which said chopper plate has a mirrored surface on the side thereof facing said detector to reduce radiation and including a thermally-insulating gasket between said plate and the edge of said roll.
Claim 8
Dependent Claim
93 words
Temperature determination apparatus for measurement of the temperature of the surface of a rotating heated roll, including a groove in one edge of said roll, said groove extending into said roll to a point sufficiently proximate to said surface so that said groove will emit infrared radiation in an amount functionally related to the temperature of said surface, an infrared detector adjacent said groove for measuring infrared radiation being emitted therefrom, said detector being calibrated relative to said surface temperature whereby said detector may be used to determine the temperature of said surface.
Claim 9
Dependent Claim
93 words
Temperature determination apparatus for measurement of the temperature of the surface of a rotating heated roll, including a groove in one edge of said roll, said groove extending into said roll to a point sufficiently proximate to said surface so that said groove will emit infrared radiation in an amount functionally related to the temperature of said surface, an infrared detector adjacent said groove for measuring infrared radiation being emitted therefrom, said detector being calibrated relative to said surface temperature whereby said detector may be used to determine the temperature of said surface.
Claim 10
Dependent Claim
40 words
Apparatus as set forth in claim 6 in which said groove is so dimensioned as to be substantially a black body radiator and in which said detector is positioned so as to receive radiation from the bottom of said groove.
Claim 11
Dependent Claim
35 words
Apparatus as set forth in claim 6 including an interrupter integral with said roll to interrupt said groove periodically so that, as said roll is rotated, the infrared emissions received by said detector are pulsed.
Claim 12
Dependent Claim
37 words
Apparatus as set forth in claim 8 in which said interrupter is a chopper plate mounted on the edge of said drum and over said groove, said plate having evenly-spaced openings therein exposing portions of said groove.
Claim 13
Dependent Claim
82 words
In an infrared detection system for determining the temperature of a heated rotating body having an infrared radiating section, that improvement including a detector positioned relative to said body so as to receive infrared radiation from said section, an interrupter associated with said section and integral with said heated body to regularly interrupt said infrared radiation from said section and thereby pulse the radiation received by said detector, said rate of pulsing being dependent upon the rate of rotation of said body.
Claim 14
Dependent Claim
82 words
In an infrared detection system for determining the temperature of a heated rotating body having an infrared radiating section, that improvement including a detector positioned relative to said body so as to receive infrared radiation from said section, an interrupter associated with said section and integral with said heated body to regularly interrupt said infrared radiation from said section and thereby pulse the radiation received by said detector, said rate of pulsing being dependent upon the rate of rotation of said body.
Claim 15
Dependent Claim
25 words
In an infrared detection system as set forth in claim 10, that improvement in which said radiating section is a cavity in said heated body.
Claim 16
Dependent Claim
25 words
In an infrared detection system as set forth in claim 11, that improvement in which said interrupter is a reflective plate partially covering said cavity.
Claim 17
Dependent Claim
52 words
In an infrared detection system as set forth in claim 10, that improvement in which said radiating section is a portion of the surface of said heated body and said interrupter is a means on said surface for regularly varying the intensity of infrared radiation from said portion as said body rotates.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |