US5437745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High copper alloy composition for a thermocouple extension cable
Assignee: R2 TECHNOLOGIES LLC
•
Filing: 1994-03-25
•
Granted: 1995-08-01
•
Expires: 2014-03-25
Abstract
Abstract An alloy composition used in the manufacture of extension cables, comprises by weight 25.00% to 35.00% of nickel, 0.10% to 1.00% of manganese, 0.10% to 1.75% of cobalt, less than 0.25% of iron, and the balance being of copper. A thermoelement, of a thermocouple extension cable, manufactured from this composition exhibits a resistivity of approximately 240 ohms per circular mil foot. Hence, the loop resistivity of the cable, where the other thermoelement is made from copper, is generally less than 310 ohms per circular mil foot and the calibration accuracy of the cable from 0° to 100° C. is within ±2.5° C.
Inventors
- 👤 Douglas E. Frank
- 👤 Ted Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:46
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
47 words
An essentially binary alloy composition comprising a 25.00 to 33.00 weight percentage of nickel, a 0.10 to 1.00. weight percentage of manganese, a 0.10 to 1.75 weight percentage of cobalt the balance being copper, said composition providing a resistivity of approximately 240 ohms per circular mil foot.
Claim 2
Dependent Claim
47 words
An essentially binary alloy composition comprising a 25.00 to 33.00 weight percentage of nickel, a 0.10 to 1.00. weight percentage of manganese, a 0.10 to 1.75 weight percentage of cobalt the balance being copper, said composition providing a resistivity of approximately 240 ohms per circular mil foot.
Claim 3
Dependent Claim
17 words
The alloy composition according to claim 1, wherein said weight percentage of nickel is 29.00 to 33.00%.
Claim 4
Dependent Claim
17 words
The alloy composition according to claim 1, wherein said weight percentage of manganese is 0.10 to 0.70%.
Claim 5
Dependent Claim
17 words
The alloy composition according to claim 1, wherein said weight percentage of cobalt is 0.30 to 1.00%.
Claim 6
Dependent Claim
17 words
The alloy composition according to claim 1, further comprising a less than 0.25 weight percentage of iron.
Claim 7
Dependent Claim
17 words
The alloy composition according to claim 5, wherein said weight percentage of iron is less than 0.10%.
Claim 8
Dependent Claim
69 words
An essentially binary alloy composition used in manufacturing an extension cable consisting essentially of a 29.00 to 33.00 weight percentage of nickel, a 0.10 to 0.70 weight percentage of manganese, a 0.30 to 1.00 weight percentage of cobalt, a less than 0.10 weight percentage of iron the balance being copper, said composition providing a resistivity of approximately 240 ohms per circular mil foot when formed as the extension cable.
Claim 9
Dependent Claim
69 words
An essentially binary alloy composition used in manufacturing an extension cable consisting essentially of a 29.00 to 33.00 weight percentage of nickel, a 0.10 to 0.70 weight percentage of manganese, a 0.30 to 1.00 weight percentage of cobalt, a less than 0.10 weight percentage of iron the balance being copper, said composition providing a resistivity of approximately 240 ohms per circular mil foot when formed as the extension cable.
Claim 10
Dependent Claim
55 words
A thermocouple extension wire manufactured from an essentially binary alloy composition comprising a 25.00 to 33.00 weight percentage of nickel, a 0.10 to 1.00 weight percentage of manganese, a 0.10 to 1.75 weight percentage of cobalt the balance being copper, said thermocouple extension wire having a resistivity of approximately 240 ohms per circular mil foot.
Claim 11
Dependent Claim
55 words
A thermocouple extension wire manufactured from an essentially binary alloy composition comprising a 25.00 to 33.00 weight percentage of nickel, a 0.10 to 1.00 weight percentage of manganese, a 0.10 to 1.75 weight percentage of cobalt the balance being copper, said thermocouple extension wire having a resistivity of approximately 240 ohms per circular mil foot.
Claim 12
Dependent Claim
20 words
The thermocouple extension wire according to claim 8, further comprising a weight percentage of iron that is less than 0.25%.
Claim 13
Dependent Claim
25 words
The alloy composition according to claim 8, wherein said thermocouple extension wire has a calibration accuracy from 0° to 100° C. of within ±2.2° C.
Claim 14
Dependent Claim
25 words
The alloy composition according to claim 9, wherein said thermocouple extension wire has a calibration accuracy from 0° to 100° C. of within ±2.5° C.
Claim 15
Dependent Claim
35 words
The alloy composition according to claim 1, wherein said alloy composition provides a calibration accuracy from 0° to 100° C. of within ±2.5° C. when said alloy composition is employed as a thermocouple extension wire.
Claim 16
Dependent Claim
35 words
The alloy composition according to claim 32 wherein said alloy composition provides a calibration accuracy from 0° to 100° C. of within ±2.2° C. when said alloy composition is employed as a thermocouple extension wire.
Claim 17
Dependent Claim
35 words
The alloy composition according to claim 7, wherein said alloy composition provides a calibration accuracy from 0° to 100° C. of within ±2.5° C. when said alloy composition is employed as said thermocouple extension cable.
Claim 18
Dependent Claim
35 words
The alloy composition according to claim 7, wherein said alloy composition provides a calibration accuracy from 0° to 100° C. of within ±2.2° C. when said alloy composition is employed as said thermocouple extension cable.
References Cited (Backward Citations)
GB700650A
Cited
US2696544A
Cited
US3017269A
Cited
US3337371A
Cited
US3607242A
Cited
US4002500A
Cited
US3776781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |