US3591809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic radiation sensor varying the viscosity of a fluid stream
Assignee: Johnson Controls International Inc
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Filing: 1969-01-27
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Granted: 1971-07-06
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Expires: 1989-01-27
Abstract
Abstract This disclosure includes a fluidic sensor establishing a fluid signal related to the level of radiant energy impressed on the sensor. The sensor is a capillary tube mounted at the focal point of a reflector into which the radiant energy field is directed. The output of the capillary tube is a signal stream related to the temperature of the tube. The output is connected to a fluid amplifier. A filter is shown between the source of radiant energy and the reflector to select the frequency or frequency band within the total radiation spectrum which is passed from the source to the reflector.
Inventors
- 👤 Richard N Laakaniemi
- 👤 Paul H Sorenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:40
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/02; F15C1/04; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/218; Y10T137/2191; Y10T137/2273
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
23 words
The fluidic radiation sensor of claim 1 wherein said fluid resistor means is a laminar flow means of a radiant energy absorbing construction.
Claim 2
Dependent Claim
27 words
The fluidic radiation sensor of claim 1 wherein said capillary tube means is made of a material for absorbing radiant energy and having an outer black surface.
Claim 3
Dependent Claim
35 words
The fluidic radiation sensor of claim 1 wherein detection means include a fluidic amplifier having input means connected to said fluid resistor means and an output stream coupled to and modulated by said signal stream.
Claim 4
Dependent Claim
29 words
The fluidic radiation sensor of claim 1 wherein said focusing means concentrates the energy to a focal point and said fluid resistor means is mounted at said focal point.
Claim 5
Dependent Claim
51 words
The fluidic radiation sensor of claim 1 wherein said focusing means concentrates the energy to a focal point, said capillary tube means is mounted at said focal point, and said detection means is a fluidic amplifier establishing a high pressure fluid output signal proportional to the strength of the signal stream.
Claim 6
Dependent Claim
34 words
The fluidic radiation sensor of claim 1 having a radiant energy filter means interposed between the concentrating means and the source of radiant energy to pass only radiation of a selected frequency or frequencies.
Claim 7
Dependent Claim
45 words
The fluidic radiation sensor of claiM 1 having a radiant energy filter means to pass only radiation of a selected frequency or frequencies, and said detection means is a fluidic amplifier establishing a high pressure fluid signal proportional to the strength of the signal stream.
Claim 8
Dependent Claim
66 words
The fluidic radiation sensor of claim 1 having a plurality of radiant energy filter means individually positioned within said energy field to selectively pass radiation of a different frequency, the output of said fluid resistor means being related to the particular frequency impressed on the concentrating means whereby said detection means establishes an output signal indicative of the particular filter means interposed within said energy field.
Claim 9
Dependent Claim
81 words
The fluidic radiation sensor of claim 1 having a controllable radiation source establishing the radiant energy field and wherein said detection means is a fluidic amplifier establishing a high pressure fluid output signal proportional to the strength of said output signal stream, and a fluid actuated controller connected to said detection means and said controllable radiation source to vary the intensity of the radiant energy field impressed upon said energy concentrating means in accordance with the strength of said signal stream.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |