US3598156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bimetal tubing and method of making same
Assignee: JORDAN BAND
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Filing: 1968-07-15
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Granted: 1971-08-10
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Expires: 1988-07-15
Abstract
Abstract An improved elongated bimetal tubing comprised of a first outer shell and a second inner shell, each formed from different metals, and having therebetween a third bonding metal metallurgically bonded to each. The third metal includes three strata; the first comprising an alloy of the outer shell metal and the bonding metal; the second comprising primarily the bonding metal; and, the third comprising an alloy of the inner shell metal and the bonding metal.
Inventors
- 👤 William L Ulmer
- 👤 Harry W Mcquaid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:35
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/08; B; B21; B21C; B21C1/00; B21C1/16; B21C1/22; B21C37/00; B21C37/06; B21C37/15; B21C37/154; F16L9/00; F16L9/02; B21D; B21D39/00; B21D39/08; B21D39/20; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12708; Y10T428/12715; Y10T428/12722; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799; Y10T428/13
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
In an elongated metal tubing of the type including a first outer shell formed from a first metal and a second inner shell formed from a second metal, the improvement comprising: a bonding layer between said shells, said layer comprising primarily a third metal having a melting point below the melting point of said first and second metals, said layer being metallurgically bonded to said outer shell by an alloy of said first and third metals and said layer being metallurgically bonded to said inner shell by an alloy of said second and third metals such that said layer includes three strata, the first of said three strata comprising said alloy of said first and third metals, the second of said three strata primarily comprising said third metal and the third of said three strata comprising said alloy of said second and third metals.
Claim 2
Dependent Claim
144 words
In an elongated metal tubing of the type including a first outer shell formed from a first metal and a second inner shell formed from a second metal, the improvement comprising: a bonding layer between said shells, said layer comprising primarily a third metal having a melting point below the melting point of said first and second metals, said layer being metallurgically bonded to said outer shell by an alloy of said first and third metals and said layer being metallurgically bonded to said inner shell by an alloy of said second and third metals such that said layer includes three strata, the first of said three strata comprising said alloy of said first and third metals, the second of said three strata primarily comprising said third metal and the third of said three strata comprising said alloy of said second and third metals.
Claim 3
Dependent Claim
16 words
The improvement as defined in claim 1 wherein said first metal is an iron based metal.
Claim 4
Dependent Claim
16 words
The improvement as defined in claim 2 wherein said second metal is a copper based metal.
Claim 5
Dependent Claim
16 words
The improvement as defined in claim 3 wherein said third metal is a zinc based metal.
Claim 6
Dependent Claim
16 words
The improvement as defined in claim 1 wherein said third metal is a zinc based metal.
Claim 7
Dependent Claim
88 words
An elongated bimetal tubing comprising: a first outer shell of iron based metal; a second inner shell of copper based metal; and, a bonding layer between said shells, said bonding layer comprising a zinc based metal metallurgically bonded to both of said shells and including three strata, one of said three strata comprising an iron-zinc alloy, another of said three strata comprising primarily said zinc based metal and the other of said strata comprising a copper-zinc alloy, whereby said inner shell is permanently bonded onto said outer shell.
Claim 8
Dependent Claim
88 words
An elongated bimetal tubing comprising: a first outer shell of iron based metal; a second inner shell of copper based metal; and, a bonding layer between said shells, said bonding layer comprising a zinc based metal metallurgically bonded to both of said shells and including three strata, one of said three strata comprising an iron-zinc alloy, another of said three strata comprising primarily said zinc based metal and the other of said strata comprising a copper-zinc alloy, whereby said inner shell is permanently bonded onto said outer shell.
Claim 9
Dependent Claim
88 words
An elongated bimetal tubing comprising: a first outer shell of iron based metal; a second inner shell of copper based metal; and, a bonding layer between said shells, said bonding layer comprising a tin based metal metallurgically bonded to both of said shells and including three strata, one of said three strata comprising an iron-tin alloy, another of said three strata comprising primarily said tin based metal and the other of said strata comprising a copper-tIn alloy, whereby said inner shell is permanently bonded onto said outer shell.
Claim 10
Dependent Claim
88 words
An elongated bimetal tubing comprising: a first outer shell of iron based metal; a second inner shell of copper based metal; and, a bonding layer between said shells, said bonding layer comprising a tin based metal metallurgically bonded to both of said shells and including three strata, one of said three strata comprising an iron-tin alloy, another of said three strata comprising primarily said tin based metal and the other of said strata comprising a copper-tIn alloy, whereby said inner shell is permanently bonded onto said outer shell.
Claim 11
Dependent Claim
88 words
An elongated bimetal tubing comprising: a first outer shell of iron based metal; a second inner shell of copper based metal; and, a bonding layer between said shells, said bonding layer comprising an aluminum based metal metallurgically bonded to both of said shells and including three strata, one of said three strata comprising an iron-aluminum alloy, another of said three strata comprising primarily said aluminum based metal and the other of said strata comprising a copper-aluminum alloy, whereby said inner shell is permanently bonded onto said outer shell.
Claim 12
Dependent Claim
88 words
An elongated bimetal tubing comprising: a first outer shell of iron based metal; a second inner shell of copper based metal; and, a bonding layer between said shells, said bonding layer comprising an aluminum based metal metallurgically bonded to both of said shells and including three strata, one of said three strata comprising an iron-aluminum alloy, another of said three strata comprising primarily said aluminum based metal and the other of said strata comprising a copper-aluminum alloy, whereby said inner shell is permanently bonded onto said outer shell.
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |