US3864975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature measuring apparatus
Assignee: Individual
•
Filing: 1973-04-16
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Granted: 1975-02-11
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Expires: 1993-04-16
Abstract
Abstract Temperature measuring device, utilizing coiled thermocouple cables, which coils expand or contract as a function of the fluid level within a fluid-containing tank.
Inventors
- 👤 Redwood L Springfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:20
CPC Classifications
G; G01; G01K; G01K13/00; G01K13/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
Apparatus for measuring temperature within a variable-level-fluid-containing vessel, said apparatus comprising: A coil containing means for measuring the temperature of said fluid at a plurality of discreet points, said coil being adapted to be anchored, at one end, to said vessel; flotation means adapted to move vertically in response to said fluid level, said flotation means being adapted to have said coil anchored thereto, at a point removed from said one end; and vertical support means affixed to the bottom of said vessel and to said flotation means, said vertical support means comprising at least one extensible constant force spring.
Claim 2
Dependent Claim
100 words
Apparatus for measuring temperature within a variable-level-fluid-containing vessel, said apparatus comprising: A coil containing means for measuring the temperature of said fluid at a plurality of discreet points, said coil being adapted to be anchored, at one end, to said vessel; flotation means adapted to move vertically in response to said fluid level, said flotation means being adapted to have said coil anchored thereto, at a point removed from said one end; and vertical support means affixed to the bottom of said vessel and to said flotation means, said vertical support means comprising at least one extensible constant force spring.
Claim 3
Dependent Claim
31 words
Apparatus of claim 1, and wherein said constant force spring includes a reel portion, and one end of said constant force spring is adapted to be affixed to a floating roof.
Claim 4
Dependent Claim
77 words
Temperature measuring apparatus including in combination: fluid containing vessel having bottom, upright walls, and a floating roof which rises and falls as a function of the level of the fluid in said vessel. coil, fixed to said bottom and to said floating roof, and adapted to extend outwardly therefrom; said coil comprising a plurality of thermocouple-cables containing junctions, spirally wrapped around each other; and constant force extensible spring means fixed to said bottom and to said roof.
Claim 5
Dependent Claim
77 words
Temperature measuring apparatus including in combination: fluid containing vessel having bottom, upright walls, and a floating roof which rises and falls as a function of the level of the fluid in said vessel. coil, fixed to said bottom and to said floating roof, and adapted to extend outwardly therefrom; said coil comprising a plurality of thermocouple-cables containing junctions, spirally wrapped around each other; and constant force extensible spring means fixed to said bottom and to said roof.
Claim 6
Dependent Claim
24 words
Apparatus of claim 3, and including flotation means riding on fluid surface in said vessel, said coil being further affixed to said flotation means.
Claim 7
Dependent Claim
15 words
Apparatus of claim 4, said flOtation means circumscribing portions of said constant force spring means.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |