Patent US2510672A successfully refreshed from Google Patents.
Patent US3791798A successfully refreshed from Google Patents.
US3791798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal bonding with sintering
Assignee: National Standard Co
•
Filing: 1972-07-24
•
Granted: 1974-02-12
•
Expires: 1992-07-24
Abstract
Abstract Heat bonding of a first metal component with a second metal component in which the holding is affected to the metal components being subjected to reduction and sintering in a favorable environment and in which the second metal component consisting of a reducible metal compound has contraction characteristics during reduction and sintering greater than that of the first metal component to effect bonding of two components.
Inventors
- 👤 J Joyce
- 👤 Intire H Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:56
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/02; B22F7/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12042; Y10T428/12063; Y10T428/12493; Y10T428/12771; Y10T428/12778; Y10T428/12861; Y10T428/12903; Y10T428/12931; Y10T428/12951; Y10T428/12972; Y10T428/12979; Y10T428/27; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2929; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
26 words
The method of claim 1 where the metal compounds are selected from the group consisting of: the oxides of Fe, Co, Cr, Ni, Cu, and W.
Claim 2
Dependent Claim
20 words
The method of claim 1 where the metal compounds are selected from the group consisting of WS2, CuCl, and H2WO4.
Claim 3
Dependent Claim
63 words
The method of claim 1 in which said first metal component is a wire, said unreduced metal component is a tube, said wire being of smaller diameter than the inner diameter of said tube before reduction and sintering and of the same diameter as the diameter of said tube after reduction and sintering, and in which said wire is inserted into said tube.
Claim 4
Dependent Claim
68 words
The method of claim 1 in which said first metal component is a substantially solid metal body, said unreduced metal component is a hollow body, said solid metal body being smaller than the hollow area of said unreduced metal component before sintering and the same as said hollow area after sintering, and in which said solid metal body is inserted into the hollow area of said hollow body.
Claim 5
Dependent Claim
27 words
The method of claim 4 wherein the minimum diameter of the wire is larger than the final diameter (df) of the tube as determined by the formula:
Claim 6
Dependent Claim
44 words
The method of claim 1 in which said first metal component is a wire, said unreduced metal component is a tube, said wire being of smaller diameter than the inner diameter of said tube, and in which said wire is inserted into said tube.
Claim 7
Dependent Claim
13 words
The method of claim 4 in which said wire extends through said tube.
Claim 8
Dependent Claim
15 words
The method of claim 1 wherein said unreduced metal component consists essentially of iron oxide.
Claim 9
Dependent Claim
16 words
The method of claim 4 in which said unreduced metal component consists essentially of iron oxide.
Claim 10
Dependent Claim
50 words
The method of claim 1 wherein said metal component and said unreduced metal component are formed from compacts consisting essentially of particles of iron oxide and a binder in which at least 35 percent by the weight of the iron oxide particles have a major dimension less than 10 microns.
Claim 11
Dependent Claim
45 words
The method of claim 11 in which 50 percent by weight of the iron oxide particles are each less than .8 microns, and 50 percent by weight of the iron oxide particles each being in a range of from about 0.8 microns to 10 microns.
Claim 12
Dependent Claim
45 words
The method of claim 7 in which said unreduced metal component consists essentially of compacted particles composed predominantly of iron oxide particles, and the diameter of the wire is in the ratio of 0.95 to 1 with respect to the inner diameter of the tube.
Claim 13
Dependent Claim
46 words
The method of claim 4 wherein the diameter of the wire is the same as the diameter (df) of a tube of a sintered reduced metal component initially composed of two reducible and sinterable metal compounds to form a metal alloy as determined by the formula:
Claim 14
Dependent Claim
48 words
The method of claim 4 wherein the minimum diameter of the wire is no larger than the final diameter (df) of a tube of a sintered reduced metal component initially composed of three reducible and sinterable metal compounds to form a metal alloy as determined by the formula:
Claim 15
Dependent Claim
53 words
The method of claim 4 wherein the minimum diameter of the wire is the same as the final diameter (df) of a tube of a sintered reduced metal component initially composed of two reducible and sinterable metal compounds and an alloy metal or alloy to form another alloy as determined by the formula:
Claim 16
Dependent Claim
32 words
The method of claim 4 wherein the minimum diameter of the wire is the same as the final diameter (df) of a tube of reduced metal composed as determined by the formula:
Claim 17
Dependent Claim
15 words
The method of claim 1 wherein said unreduced metal component consists essentially of copper oxide.
Claim 18
Dependent Claim
23 words
The method of claim 1 wherein said unreduced metal component consists essentially of materials disposed to yield stainless steel upon reduction and sintering.
Claim 19
Dependent Claim
25 words
The method of claim 1 wherein said unreduced metal component is formed from a compact consisting essentially of particles of copper oxide and a binder.
Claim 20
Dependent Claim
34 words
The method of claim 1 wherein said unreduced metal component is formed from a compact consisting essentially of particles not exceeding 10 microns in size disposed to yield stainless steel upon reduction and sintering.
Claim 21
Dependent Claim
29 words
The method of claim 21 wherein the mean size of said particles is .8 micron, in which 90 percent by weight of said particles are less than 2.5 microns.
Claim 22
Dependent Claim
52 words
An assembly of metal components comprising a soli solid inner body, and a solid outer body intimately bonded over their contiguous surfaces, wherein the outer body has the following characteristics: a uniform porosity of about 0.1 to 5 percent by volume, and a mean grain size of less than about 20 microns.
Claim 23
Dependent Claim
9 words
An assembly made by the method of claim 21.
References Cited (Backward Citations)
GB628679A
Cited
US2224934A
Cited
US2992172A
Cited
US3474523A
Cited
GB1191445A
Cited
US3671228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |