US5484096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding two bodies together by brazing
Assignee: Individual
•
Filing: 1994-06-24
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Granted: 1996-01-16
•
Expires: 2014-06-24
Abstract
Abstract A method of brazing a first body to a second body having particular application to the bonding of a composite abrasive compact to a substrate. The method involves the steps of providing a brazing shim comprising at least two zones having differing melting temperatures, placing the shim on a surface of the first body, placing a surface of the second body on the shim to form an unbonded assembly, applying heat to the assembly to cause the shim to melt and allowing the assembly to cool to a temperature at which all the zones of the shim become solid.
Inventors
- 👤 Klaus Tank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:56
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/002; B22; B22F; B22F7/00; B22F7/06; B23K13/00; B23K13/01
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
120 words
A method of bonding a first body to a second body comprising the steps of: (i) providing a brazing shim comprising at least two zones having differing melting temperatures; (ii) placing the shim on a surface of a first body made of cemented carbide; (iii) placing a surface of a second body made of cemented carbide on the shim to form an unbonded assembly, wherein both said first and said second bodies are in direct contact with each to the at least two zones; (iv) applying heat to the assembly to cause the shim to melt thereby bonding the assembly; and (v) allowing the assembly to cool to a temperature at which all the zones of the shim become solid.
Claim 2
Independent Claim
120 words
A method of bonding a first body to a second body comprising the steps of: (i) providing a brazing shim comprising at least two zones having differing melting temperatures; (ii) placing the shim on a surface of a first body made of cemented carbide; (iii) placing a surface of a second body made of cemented carbide on the shim to form an unbonded assembly, wherein both said first and said second bodies are in direct contact with each to the at least two zones; (iv) applying heat to the assembly to cause the shim to melt thereby bonding the assembly; and (v) allowing the assembly to cool to a temperature at which all the zones of the shim become solid.
Claim 3
Dependent Claim
25 words
A method according to claim 1 where at least one of said first and said second bodies has an abrasive compact layer bonded to it.
Claim 4
Dependent Claim
39 words
A method according to claim 1 wherein the brazing shim of step (i) has a central zone having the lower of the melting temperatures and an outer zone, surrounding the central zone, having the higher of the melting temperatures.
Claim 5
Dependent Claim
55 words
A method according to claim 1 wherein the brazing shim of step (i) comprises a central zone, an intermediate zone surrounding the central zone and an outer zone surrounding the intermediate zone, the melting temperature of the intermediate zone being higher than that of the central zone, and lower than that of the outer zone.
Claim 6
Dependent Claim
27 words
A method according to claim 1 wherein the brazing shim of step (i) has a size and shape matching the interface between the two surfaces being bonded.
Claim 7
Dependent Claim
28 words
A method according to claim 1 wherein said brazing shim of step (i) is characterized by a sharp transition in melting temperature at the boundary between adjacent zones.
Claim 8
Dependent Claim
28 words
A method according to claim 1 wherein said brazing shim of step (i) is characterized by a gradual transition in melting temperature at the boundary between adjacent zones.
Claim 9
Independent Claim
140 words
A method of bonding a first body to a second body comprising the steps of: (i) providing a brazing shim comprising at least two zones having differing melting temperatures; (ii) placing the shim on a surface of a first body; (iii) placing a surface of a second body, said second body made of different material than said first body, with the proviso that one of said first and said second bodies is made of cemented carbide, on the shim to form an unbonded assembly, wherein both said first and said second bodies are in direct contact with each of the at least two zones; (iv) applying heat to the assembly to cause the shim to melt thereby bonding the assembly; and (v) allowing the assembly to cool to a temperature at which all the zones of the shim become solid.
Claim 10
Independent Claim
140 words
A method of bonding a first body to a second body comprising the steps of: (i) providing a brazing shim comprising at least two zones having differing melting temperatures; (ii) placing the shim on a surface of a first body; (iii) placing a surface of a second body, said second body made of different material than said first body, with the proviso that one of said first and said second bodies is made of cemented carbide, on the shim to form an unbonded assembly, wherein both said first and said second bodies are in direct contact with each of the at least two zones; (iv) applying heat to the assembly to cause the shim to melt thereby bonding the assembly; and (v) allowing the assembly to cool to a temperature at which all the zones of the shim become solid.
Claim 11
Dependent Claim
29 words
A method according to claim 8 wherein whichever of said first body and said second body is made of cemented carbide has an abrasive compact layer bonded to it.
Claim 12
Dependent Claim
39 words
A method according to claim 8 wherein the brazing shim of step (i) has a central zone having the lower of the melting temperatures and an outer zone, surrounding the central zone, having the higher of said melting temperatures.
Claim 13
Dependent Claim
55 words
A method according to claim 8 wherein the brazing shim of step (i) comprises a central zone, an intermediate zone surrounding the central zone and an outer zone surrounding the intermediate zone, the melting temperature of the intermediate zone being higher than that of the central zone and lower than that of the outer zone.
Claim 14
Dependent Claim
28 words
A method according to claim 8 wherein the brazing shim of step (i) has a size and a shape matching the interface between the two surfaces being bonded.
Claim 15
Dependent Claim
26 words
A method according to claim 8 wherein the brazing shim of step (i) has a sharp transition in melting temperature at the boundary between adjacent zones.
Claim 16
Dependent Claim
26 words
A method according to claim 8 wherein the brazing shim of step (i) has a gradual transition in melting temperature at the boundary between adjacent zones.
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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) | 1999-01-15 | 1999-07-17 | 2000-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-15 | 2003-07-17 | 2004-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-15 | 2007-07-17 | 2008-01-16 | $7700.00 | Window Closed / Lapsed |