US4030848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lined equipment with dual base metal inserts
Assignee: Fansteel Inc
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Filing: 1976-10-18
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Granted: 1977-06-21
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Expires: 1996-10-18
Abstract
Abstract An improved composite wall construction and method of fabrication is disclosed in which a wall assembly is comprised of a base metal layer and a layer of corrosion resistant material containing an intermediate filler of base metal fusion welded to the original base metal members and to an inlaid insert of base metal at the weld root, and a fusion weld joining the layer of corrosion resistant material to provide a relatively smooth surface in the corrosion resistant layer.
Inventors
- 👤 Hibbard G. Keifert
- 👤 Frank J. Waters, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:54
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
A wall assembly joint formed between abutting ends of layered elements each comprising a layer of first metallic material and a layer of second metallic material in face-to-face relation, a. an intermediate filler base member interposed between the ends of said layer of first metallic material and fusion welded to each of said ends, b. an inlaid insert of said first metallic material underlying the abutting ends of the other of said layered elements and bridging said fusion welds between the filler base member and the ends of said layer of first metallic material, said inlaid insert being welded to said ends by said fusion welds, and c. a fusion weld joining the abutting ends of said second metallic material.
Claim 2
Dependent Claim
120 words
A wall assembly joint formed between abutting ends of layered elements each comprising a layer of first metallic material and a layer of second metallic material in face-to-face relation, a. an intermediate filler base member interposed between the ends of said layer of first metallic material and fusion welded to each of said ends, b. an inlaid insert of said first metallic material underlying the abutting ends of the other of said layered elements and bridging said fusion welds between the filler base member and the ends of said layer of first metallic material, said inlaid insert being welded to said ends by said fusion welds, and c. a fusion weld joining the abutting ends of said second metallic material.
Claim 3
Dependent Claim
39 words
A wall assembly according to claim 1 in which an expansion convolution is provided in each member of the second layer before the fusion weld is made joining the layer of second material of the members to each other.
Claim 4
Dependent Claim
51 words
A wall assembly according to claim 1 in which the first metallic material is selected from metals and alloys comprising titanium, zirconium, hafnium, tantalum, columbium, vanadium, iron-base, nickel-base, cobalt-base and copper-base materials, and the second metallic material is selected from metals and alloys comprising titanium, zirconium, hafnium, tantalum, columbium and vanadium.
Claim 5
Dependent Claim
28 words
A wall assembly according to claim 1 in which the layer of first material is an iron-base alloy and the layer of second material is a tantalum-base material.
Claim 6
Dependent Claim
35 words
A wall assembly according to claim 1 in which the layer of first material is comprised of a layer of copper bonded to mild steel and the layer of second material is a tantalum-base material.
Claim 7
Independent Claim
155 words
A method of fabricating a wall which includes a layer of first metallic material and a layer of second metallic material, each layer having one face in a face-to-face relation with a face of the other layer, comprising the steps of: a. fusion welding, under inert conditions, the layer of second material of the two members to each other, b. machining the first layer in each member in preparation for welding of the members to an inlaid insert of first material and to an insert of first material placed between the members of the first layer, c. inlaying an insert of first material in channels in the members of the first material, d. placing an insert of first material between the members of the first material, and e. fusion welding the members of the first layer to the insert of first material, the roots of said welds bonded to the inlaid insert of first material.
Claim 8
Independent Claim
155 words
A method of fabricating a wall which includes a layer of first metallic material and a layer of second metallic material, each layer having one face in a face-to-face relation with a face of the other layer, comprising the steps of: a. fusion welding, under inert conditions, the layer of second material of the two members to each other, b. machining the first layer in each member in preparation for welding of the members to an inlaid insert of first material and to an insert of first material placed between the members of the first layer, c. inlaying an insert of first material in channels in the members of the first material, d. placing an insert of first material between the members of the first material, and e. fusion welding the members of the first layer to the insert of first material, the roots of said welds bonded to the inlaid insert of first material.
Claim 9
Dependent Claim
24 words
A method of fabricating a wall according to claim 6 in which an expansion convolution is formed in the second layer of each member.
Claim 10
Dependent Claim
54 words
A method of fabricating a wall according to claim 6 in which the first metallic material is selected from metals and alloys comprising titanium, zirconium, hafnium, tantalum, columbium, vanadium, iron-base, nickel-base, cobalt-base and copper-base materials, and the second metallic material is selected from metals and alloys comprising titanium, zirconium, hafnium, tantalum, columbium and vanadium.
Claim 11
Dependent Claim
31 words
A method of fabricating a wall according to claim 6 in which the layer of first material is an iron-base alloy and the layer of second material is a tantalum-base material.
Claim 12
Dependent Claim
38 words
A method of fabricating a wall according to claim 6 in which the layer of first material is comprised of a layer of copper bonded to mild steel and the layer of second material is a tantalum-base material.
References Cited (Backward Citations)
US3457961A
Cited
US3443306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |