US5225157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amalgam composition for room temperature bonding
Assignee: Rateze Remote Mgmt LLC
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Filing: 1991-05-16
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Granted: 1993-07-06
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Expires: 2011-05-16
Abstract
Abstract An amalgam and a method of preparing an amalgam for bonding two articles together, which includes mixing a composition of a liquid metal and a metal powder to thoroughly wet the metal powder with the liquid metal, and thereafter mixing a composition with a pestle element for mechanically amalgamating the composition. Other additives may be provided such as ductile metals, additives containing oxides, ceramics, or other non-metallic compounds, and volatile constituents. The amalgamated composition can then wet surfaces to be bonded and harden at or near room temperature.
Inventors
- 👤 Colin A. McKay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:13
CPC Classifications
C; C22; C22C; C22C28/00; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3465
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
56 words
An amalgam composition, comprising: a metal liquid; a metal powder; essentially all metal powder particles thoroughly wetted with liquid metal; sufficient metal liquid so that the amalgam wets surfaces to be bonded at room temperature under pressure or abrasion; and sufficient metal powder so that the amalgam sets up and hardens at or near room temperature.
Claim 2
Dependent Claim
56 words
An amalgam composition, comprising: a metal liquid; a metal powder; essentially all metal powder particles thoroughly wetted with liquid metal; sufficient metal liquid so that the amalgam wets surfaces to be bonded at room temperature under pressure or abrasion; and sufficient metal powder so that the amalgam sets up and hardens at or near room temperature.
Claim 3
Dependent Claim
22 words
The amalgam of claim 1 wherein the liquid metal is selected from the group consisting of gallium, indium, gallium/tin, gallium/indium, and gallium/indium/tin.
Claim 4
Dependent Claim
30 words
The amalgam of claim 1 wherein the metal powder is selected from the group consisting of antimony, cobalt, copper, chromium, germanium, gold, iron, nickel, magnesium, manganese, platinum, silver, and vanadium.
Claim 5
Dependent Claim
45 words
The amalgam of claim 1 wherein the metal powder includes ductile particles selected from the group consisting of aluminum, molybdenum, and tungsten for providing a more ductile amalgam, wherein said ductile particles in amalgam are in a concentration of about 2 to 20 wt. %.
Claim 6
Dependent Claim
23 words
The amalgam of claim 1 wherein the composition includes additives selected from the group consisting of ceramics, diamond, graphite, nitrides, phosphides, and sulfides.
Claim 7
Dependent Claim
29 words
The amalgam of claim 1 wherein the composition includes oxide as an additive, wherein said oxide in amalgam is in a concentration of about 2 to 10 wt. %.
Claim 8
Dependent Claim
29 words
The amalgam of claim 1 wherein the composition includes aluminum as an additive, wherein said aluminum in amalgam is in a concentration of about 5 to 20 wt. %.
Claim 9
Dependent Claim
17 words
The amalgam of claim 1 wherein the metal powder composition is between 25 to 50 wt. %.
Claim 10
Dependent Claim
28 words
The amalgam of claim 1 wherein nickel is the metal powder, gallium is the liquid metal and the nickel content is between about 30 to 45 wt. %.
Claim 11
Dependent Claim
28 words
The amalgam of claim 1 wherein copper is the metal powder, gallium is the liquid metal and the copper composition is between about 30 to 45 wt. %.
Claim 12
Dependent Claim
52 words
The amalgam of claim 1 wherein the metal powder is made up of a mixture of nickel and copper, gallium is the liquid metal and the content of the nickel is between about 5 and 15 wt. % and the content of the copper is between about 30 to 40 wt. %.
Claim 13
Dependent Claim
32 words
The amalgam of claim 1 wherein the liquid metal forms greater than 50 wt. % of the composition and the metal powder forms less 50 wt. % or less of the composition.
Claim 14
Dependent Claim
18 words
The amalgam of claim 1 wherein the liquid metal forms greater than 60 wt. % of the composition.
Claim 15
Dependent Claim
36 words
The amalgam of claim 1 wherein the composition further includes a volatile constituent and wherein the amount of evaporation of said volatile constituent controls the final proportion of the final reacted intermetallic compound in the amalgam.
Claim 16
Dependent Claim
23 words
The amalgam of claim 2 wherein the liquid metal further contains a material selected from the group consisting of mercury, cadmium, and bismuth.
Claim 17
Dependent Claim
36 words
The amalgam of claim 14 wherein the volatile constituent is selected from the group consisting of zinc and mercury, wherein said volatile constituent in amalgam is in a concentration of about 2 to 10 wt. %.
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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) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |