US3668758A
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US
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Bonding of metallic members with alkali metals and alkali metal containing alloys
Assignee: EARL I LARSEN
•
Filing: 1971-07-08
•
Granted: 1972-06-13
•
Expires: 1991-07-08
Abstract
Abstract Bonding of copper and copper containing alloys or silver or silver containing alloys to copper or copper alloys or to silver or silver containing alloys through the use of alkali metal or alkali metal containing alloys.
Inventors
- 👤 Richard H Krock
- 👤 Earl I Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:39
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K35/00; B23K35/001; B23K35/007; B23K35/22; B23K35/24; B23K35/26; B23K35/30; H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0231; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12493; Y10T428/12729; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12833; Y10T428/12861; Y10T428/12882
Claims Analysis
Total Claims: 69
Claim 1
Independent Claim
14 words
A method according to claim 1 wherein said first member is a copper member.
Claim 2
Dependent Claim
14 words
A method according to claim 1 wherein said first member is a copper alloy.
Claim 3
Dependent Claim
14 words
A method according to claim 1 wherein said first member is a silver member.
Claim 4
Dependent Claim
14 words
A method according to claim 1 wherein said first member is a silver alloy.
Claim 5
Dependent Claim
27 words
A method according to claim 1 wherein said first member is a refractory base composite containing a member selected from the group consisting of copper and silver.
Claim 6
Dependent Claim
27 words
A method according to claim 1 wherein said second member is a refractory base composite containing a member selected from the group consisting of copper and silver.
Claim 7
Dependent Claim
14 words
A method according to claim 1 wherein said second member is a copper member.
Claim 8
Dependent Claim
14 words
A method according to claim 1 wherein said second member is a copper alloy.
Claim 9
Dependent Claim
14 words
A method according to claim 1 wherein said second member is a silver member.
Claim 10
Dependent Claim
14 words
A method according to claim 1 wherein said second member is a silver alloy.
Claim 11
Dependent Claim
19 words
A method according to claim 1 wherein said alkali metal containing material is selected from lithium, sodium and potassium.
Claim 12
Dependent Claim
17 words
A method according to claim 12 wherein said alkali metal containing material is an alkali metal layer.
Claim 13
Dependent Claim
17 words
A method according to claim 12 wherein said alkali metal containing material is an alkali metal alloy.
Claim 14
Dependent Claim
22 words
A method according to claim 14 wherein an alloy is an alloy of lithium and a metal selected from sodium and potassium.
Claim 15
Dependent Claim
13 words
A method according to claim 14 wherein said alloy is a lithium alloy.
Claim 16
Dependent Claim
18 words
A method according to claim 14 wherein said lithium alloy is an alloy of alkali metal and copper.
Claim 17
Dependent Claim
17 words
A method according to claim 14 wherein said alloy is an alloy of alkali metal and silver.
Claim 18
Dependent Claim
17 words
A method according to claim 12 wherein said lithium alloy is an alloy of magnesium and lithium.
Claim 19
Dependent Claim
14 words
A method according to claim 14 wherein said alloy contains at least three elements.
Claim 20
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a silver-copper-lithium containing alloy.
Claim 21
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a copper-lithium-bismuth containing alloy.
Claim 22
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a silver-lithium-bismuth containing alloy.
Claim 23
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a silver-lithium-thallium containing alloy.
Claim 24
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a silver-lithium-lead containing alloy.
Claim 25
Dependent Claim
19 words
A method according to claim 1 wherein the assembly is heated to a temperature from 330* to 500* C.
Claim 26
Dependent Claim
17 words
A method according to claim 17 wherein said copper alloy contains from 0.1 to 6 percent lithium.
Claim 27
Dependent Claim
17 words
A method according to claim 27 wherein said copper-lithium alloy contains from 0.12 to 2.5 percent lithium.
Claim 28
Dependent Claim
20 words
A method according to claim 18 wherein said silver alloy contains from about 4 to 40 percent by weight lithium.
Claim 29
Dependent Claim
18 words
A method according to claim 29 wherein said lithium content is from 10 to 30 percent by weight.
Claim 30
Dependent Claim
12 words
A method according to claim 17 wherein said alloy is copper-sodium alloy.
Claim 31
Dependent Claim
16 words
A method according to claim 31 wherein said alloy contains up to about 1 percent sodium.
Claim 32
Dependent Claim
14 words
A method according to claim 14 wherein said alloy is a copper potassium alloy.
Claim 33
Dependent Claim
16 words
A method according to claim 33 wherein said alloy contains up to about 0.75 percent potassium.
Claim 34
Dependent Claim
16 words
A method according to claim 33 wherein said alloy contains up to about 0.35 percent potassium.
Claim 35
Dependent Claim
13 words
A method according to claim 18 wherein said alloy is a silver-potassium alloy.
Claim 36
Dependent Claim
17 words
A method according to claim 36 wherein the amount of potassium is up to about 0.75 percent.
Claim 37
Dependent Claim
17 words
A method according to claim 37 wherein the amount of potassium is up to about 0.35 percent.
Claim 38
Dependent Claim
13 words
A method accoRding to claim 18 wherein said alloy is a silver-sodium alloy.
Claim 39
Dependent Claim
17 words
A method according to claim 39 wherein the sodium is up to about 1 percent by weight.
Claim 40
Dependent Claim
17 words
A method according to claim 40 wherein the sodium is up to about 0.5 percent by weight.
Claim 41
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a copper-lithium-sodium containing alloy.
Claim 42
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a copper-lithium-potassium containing alloy.
Claim 43
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a silver-lithium-sodium containing alloy.
Claim 44
Dependent Claim
14 words
A method according to claim 20 wherein said alloy is a silver-lithium-potassium containing alloy.
Claim 45
Dependent Claim
21 words
A method according to claim 21 wherein said alloy also contains at least one alkali metal selected from sodium and potassium.
Claim 46
Dependent Claim
14 words
A method according to claim 46 wherein said alloy contains both sodium and potassium.
Claim 47
Dependent Claim
78 words
An alkali metal bonded article comprising a first member selected from the group consisting of silver, silver alloys, copper and copper alloys bonded to a second member selected from the group consisting of copper, copper alloys, silver and silver alloys, the interface between said bonded members defining a bonded joint, there being a concentration gradient of alkali metal from said interface into said first and second members with a maximum of said concentration gradient being at said interface.
Claim 48
Dependent Claim
14 words
An article according to claim 48 wherein said first member is a copper member.
Claim 49
Dependent Claim
14 words
An article according to claim 48 wherein said first member is a copper alloy.
Claim 50
Dependent Claim
14 words
An article according to claim 48 wherein said first member is a silver member.
Claim 51
Dependent Claim
14 words
An article according to claim 48 wherein said first member is a silver alloy.
Claim 52
Dependent Claim
14 words
An article according to claim 48 wherein said second member is a copper member.
Claim 53
Dependent Claim
14 words
An article according to claim 48 wherein said second member is a copper alloy.
Claim 54
Dependent Claim
14 words
An article according to claim 48 wherein said second member is a silver member.
Claim 55
Dependent Claim
14 words
An article according to claim 48 wherein said second member is a silver alloy.
Claim 56
Dependent Claim
21 words
An article according to claim 54 wherein said copper alloy is selected from the group consisting of brasses, bronzes and cupro-nickels.
Claim 57
Dependent Claim
21 words
An article according to claim 50 wherein said copper alloy is selected from the group consisting of brasses, bronzes and cupro-nickels.
Claim 58
Dependent Claim
23 words
An article according to claim 52 wherein said silver member is an alloy of a member selected from cadmium, copper, nickel and lead.
Claim 59
Dependent Claim
28 words
An article according to claim 59 wherein the lithium constitutes not above 40 percent by weight when at least one of the bonded components is a silver member.
Claim 60
Dependent Claim
28 words
An article according to claim 59 wherein the maximum concentration of lithium is not more than 3 percent when the assembly is made of copper or copper alloys.
Claim 61
Dependent Claim
28 words
An article according to claim 54 wherein the copper alloy contains an additive selected from the group consisting of chromium, beryllium, cobalt, nickel, silicon, aluminum, tin, and manganese.
Claim 62
Dependent Claim
28 words
An article according to claim 54 wherein the copper alloy contains an additive selected from the group consisting of chromium, beryllium, cobalt, nickel, silicon, aluminum, tin, and manganese.
Claim 63
Dependent Claim
20 words
An article according to claim 48 wherein the alkali metal is at least one metal selected from lithium, sodium, potassium.
Claim 64
Dependent Claim
11 words
An article according to claim 64 wherein the article contains lithium.
Claim 65
Dependent Claim
18 words
An article according to claim 65 wherein the article also contains a metal selected from sodium and potassium.
Claim 66
Dependent Claim
14 words
An article according to claim 66 wherein said article contains both sodium and potassium.
Claim 67
Dependent Claim
11 words
An article according to claim 48 wherein said article contains sodium.
Claim 68
Dependent Claim
11 words
An article according to claim 48 wherein said article contains potassium.
Claim 69
Dependent Claim
11 words
An article according to claim 69 wherein said article contains potassium.
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |