US3833145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-responding thermometer
Assignee: Meditech Energy and Environmental Corp
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Filing: 1970-02-16
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Granted: 1974-09-03
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Expires: 1990-02-16
Abstract
Abstract A novel, quick-responding thermometer comprising a thin metallic container enclosing a thermosensitive element, said container being formed of (1) an inner metal of high thermal conduction and relatively low mechanical strength and (2) a coating thereover of another metal which is characterized by a relatively high mechanical strength, said latter metal advantageously forming not over about 20 percent of the total wall thickness of the probe.
Inventors
- 👤 P Crosby
- 👤 R Goyette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:11
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/16; G01K1/18; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854; Y10T428/12861; Y10T428/12868; Y10T428/12903; Y10T428/1291; Y10T428/12986
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
26 words
A temperature-indicating device as defined in claim 1, wherein said second metal is a phosphorus-bearing nickel alloy comprising a minimum of 5 percent phosphorus by weight.
Claim 2
Dependent Claim
16 words
A temperature-indicating device as defined in claim 1, wherein said first metal is a cuprous metal.
Claim 3
Dependent Claim
26 words
A temperature-indicating device as defined in claim 1, wherein said first metal has a thermal conductivity of 0.65 calories per second per cm. per * C.
Claim 4
Dependent Claim
29 words
A temperature-indicating device as defined in claim 1 wherein said second metal has a thermal conductivity of less than about 0.2 calories per second per centimeter per degree Centigrade.
Claim 5
Dependent Claim
23 words
A temperature-indicating device as defined in claim 5 wherein said first metal is copper and said second metal is a phosphorous-bearing nickel alloy.
Claim 6
Dependent Claim
50 words
A temperature-indicating device as defined in claim 1 wherein a. said high heat-conducting metal layer is characterized by a thermal lag equivalent to not over 0.003 inches of copper, b. wherein said reinforcing metal is in the form at least one coating which is less than about 0.0003 inches thick.
Claim 7
Dependent Claim
21 words
A temperature indicator as defined in claim 1 comprising an exterior coating of a noble metal, rhodium, platinum, chrome or nickel.
References Cited (Backward Citations)
US3295087A
Cited
US3454376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |