US3885436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature detecting system
Assignee: Westinghouse Electric Corp
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Filing: 1973-10-02
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Granted: 1975-05-27
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Expires: 1993-10-02
Abstract
Abstract A temperature indicator apparatus and method for determining the fluid medium temperature in a fluid stream. An acoustical device is disposed in the flow path of the fluid stream, which device is actuated by the flowing fluid medium to generate sound of a particular frequency as a function of the sonic velocity of the fluid. Sound detecting means are disposed in position to sense the generated sound and to determine the frequency of the sound. The sonic velocity of the fluid is a function of the fluid temperature. The fluid temperature is thus determinable from the frequency of the sound generated.
Inventors
- 👤 Charles A Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:31
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
A system for indicating the average temperature of a fluid flowing through a duct, said system comprising a conduit disposed generally wholly within said duct, said conduit having a plurality of apertures disposed therein to admit fluid from substantially all portions of said duct, said conduit also having an opening disposed therein to provide constant drainage of fluid therefrom, whereby the fluid in said conduit is representative of a crosssection of the fluid in the duct, means for producing an acoustical vibration within said conduit, the frequency produced by said acoustical vibration producing means being a function of the sonic velocity of the fluid within the conduit, and means for sensing the frequency of said acoustical vibration within said conduit and converting said frequency to a temperature indication, whereby, immediately, a very accurate average fluid temperature is indicated.
Claim 2
Independent Claim
138 words
A system for indicating the average temperature of a fluid flowing through a duct, said system comprising a conduit disposed generally wholly within said duct, said conduit having a plurality of apertures disposed therein to admit fluid from substantially all portions of said duct, said conduit also having an opening disposed therein to provide constant drainage of fluid therefrom, whereby the fluid in said conduit is representative of a crosssection of the fluid in the duct, means for producing an acoustical vibration within said conduit, the frequency produced by said acoustical vibration producing means being a function of the sonic velocity of the fluid within the conduit, and means for sensing the frequency of said acoustical vibration within said conduit and converting said frequency to a temperature indication, whereby, immediately, a very accurate average fluid temperature is indicated.
Claim 3
Dependent Claim
14 words
The system as set forth in claim 1, wherein the conduit is toroidally shaped.
Claim 4
Dependent Claim
14 words
The system as set forth in claim 1, wherein the conduit is sinuously shaped.
References Cited (Backward Citations)
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US3706227A
Cited
US3399570A
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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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |