US3706228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature and velocity apparatus for moving fluids
Assignee: United States Department of the Army
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Filing: 1971-01-05
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Granted: 1972-12-19
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Expires: 1991-01-05
Abstract
Abstract In order to measure the temperature and velocity of a high speed stream of a gas such as air a temperature sensor is placed on the peripheral area of a disc wheel and the disc is positioned in the path of air flow and is spun until its periphery is traveling at the velocity of the air. The sensor, when moving downstream, has zero velocity with respect to the fast-flowing air and therefore gives a true reading of the air temperature.
Inventors
- 👤 Clarence C Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:50
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/10; G01K; G01K13/00; G01K13/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
The method of measuring the temperature of a flowing fluid which comprises the steps of placing a temperature sensor in the stream of flowing fluid, rotating the sensor in a single direction in a plane parallel to the direction of fluid flow at a speed where its tangential velocity is substantially equal to the velocity of the flowing fluid, and monitoring the output of the temperature sensor while it is traveling substantially downstream at approximately the velocity of the fluid.
Claim 2
Independent Claim
80 words
The method of measuring the temperature of a flowing fluid which comprises the steps of placing a temperature sensor in the stream of flowing fluid, rotating the sensor in a single direction in a plane parallel to the direction of fluid flow at a speed where its tangential velocity is substantially equal to the velocity of the flowing fluid, and monitoring the output of the temperature sensor while it is traveling substantially downstream at approximately the velocity of the fluid.
Claim 3
Dependent Claim
44 words
The method of claim 1 and the further step of alternately increasing and decreasing the velocity of the rotating sensor to vary the sensor output, and selecting the output corresponding with harmony between sensor travel and fluid flow to represent the static fluid temperature.
Claim 4
Dependent Claim
75 words
Apparatus for measuring the temperature of a flowing fluid comprising a sensor, means mounting said sensor in a stream of flowing fluid to rotate in a single direction therein in a plane parallel to the direction of fluid flow, and means To monitor the temperature sensed by said sensor at the period of its rotation when it is traveling substantially in harmony with the fluid to thereby monitor the static temperature of the flowing fluid.
Claim 5
Dependent Claim
75 words
Apparatus for measuring the temperature of a flowing fluid comprising a sensor, means mounting said sensor in a stream of flowing fluid to rotate in a single direction therein in a plane parallel to the direction of fluid flow, and means To monitor the temperature sensed by said sensor at the period of its rotation when it is traveling substantially in harmony with the fluid to thereby monitor the static temperature of the flowing fluid.
Claim 6
Dependent Claim
27 words
Apparatus as in claim 3 and means to rotate said sensor at variable speeds including the speed wherein said sensor is in harmony with the flowing fluid.
Claim 7
Dependent Claim
31 words
Apparatus as in claim 4 and means to indicate the dead-center of travel of said sensor, i.e., the point at which said sensor is traveling directly downstream with said flowing fluid.
Claim 8
Dependent Claim
26 words
Apparatus as in claim 3 and mercury filled closed cavities in the rotating means mounting said sensor, and stationary signal transmitting wires bathed in said mercury.
Claim 9
Dependent Claim
30 words
The measuring apparatus of claim 3 in which the sensor mounting means comprises a rotary wheel having a thin periphery, the sensor being mounted adjacent the periphery of the wheel.
Claim 10
Dependent Claim
85 words
The measuring apparatus of claim 3 in which the sensor mounting means comprises an axle traversing the stream of flowing fluid, a thin wheel carried by the axle within the stream of fluid, the sensor being mounted adjacent the periphery of the wheel, means to rotate the axle, and means carried by said axle at a point outside of the stream of fluid to indicate the point in the rotation of the wheel at which the sensor is traveling directly downstream of the flowing fluid.
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |