US3830634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trim members and production thereof
Assignee: Allegheny Ludlum Corp
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Filing: 1972-03-29
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Granted: 1974-08-20
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Expires: 1992-03-29
Abstract
Abstract A stainless steel trim member, a method of making a stainless steel trim member and an assembly comprised of a stainless steel trim member in combination with a metallic body member. The stainless steel trim member has an exposed surface, a contact surface which converges with the exposed surface, a connecting surface which joins the exposed surface and the contact surface, and an inner surface opposite the exposed, contact and connecting surfaces. Adhered to the inner surface is a layer of sacrificial metal. The sacrificial metal is exposed through a perforation which extends into the contact and/or connecting surfaces of the stainless steel.
Inventors
- 👤 D Zaremski
- 👤 J Beigay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:51
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; B; B60; B60R; B60R13/00; B60R13/04; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9265; Y10S428/933; Y10T; Y10T428/00; Y10T428/12; Y10T428/12354; Y10T428/12389; Y10T428/12493; Y10T428/12729; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12771; Y10T428/12785
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
14 words
An assembly according to claim 1 wherein said first metal is plain carbon steel.
Claim 2
Dependent Claim
24 words
An assembly according to claim 2 wherein said sacrificial metal is from the group consisting of aluminum, zinc, cadmium, magnesium and base alloys thereof.
Claim 3
Dependent Claim
12 words
An assembly according to claim 3 wherein said sacrificial metal is aluminum.
Claim 4
Dependent Claim
17 words
An assembly according to claim 1 wherein said coating has a thickness in excess of 0.5 mil.
Claim 5
Dependent Claim
17 words
An assembly according to claim 5 wherein said coating has a thickness in excess of 3 mils.
Claim 6
Dependent Claim
166 words
A composite article comprising a stainless steel trim member and a layer of sacrificial metal, less noble in the electromotive series than plain carbon steel, adhered thereto: said trim member having a first surface disposed to be visible, a second surface, a connecting surface joining said first and second surfaces, and an inner surface opposite said first, second and connecting surfaces; said inner surface having said layer of sacrificial metal adhered thereto; at least one perforation in said second surface and/or said connecting surface; said perforation extending through said stainless steel, thereby exposing said sacrificial metal thereThrough; said sacrificial metal acting to preclude galvanic action between said trim member and a metallic body member when said trim member and body member are brought into contact, said perforation being of sufficient size to render said sacrificial metal significantly more effective in precluding said galvanic action between said trim member and body member than would said sacrificial metal be in a like trim member devoid of said perforation.
Claim 7
Dependent Claim
25 words
A composite article according to claim 7 wherein said sacrificial metal is from the group consisting of aluminum, zinc, cadmium, magnesium and base alloys thereof.
Claim 8
Dependent Claim
13 words
A composite article according to claim 8 wherein said sacrificial metal is aluminum.
Claim 9
Dependent Claim
21 words
A composite article according to claim 7 wherein said layer of sacrificial metal has a thickness in excess of 0.5 MIL.
Claim 10
Dependent Claim
21 words
A composite article according to claim 10 wherein said layer of sacrificial metal has a thickness in excess of 3 mils.
Claim 11
Dependent Claim
184 words
In the method of producing a stainless steel trim member, wherein a stainless steel strip is shaped into a trim member having a first surface disposed to be visible, a second surface converging with said first surface, a connecting surface joining said first and second surfaces, and an inner surface opposite said first, second and connecting surfaces, the improvement which comprises: adhering a layer of metal, less noble in the electromotive series than plain carbon steel, to said stainless steel so that said inner surface of said trim member will have a layer of sacrificial metal thereon, and perforating said stainless steel so that said sacrificial metal will be exposed through said second surface and/or said connecting surface; said stainless steel trim member having a make-up which acts to preclude galvanic action between it and structures to which it is connected, said perforation being of sufficient size to give said trim member a make-up which is significantly more effective in precluding galvanic action between it and structures to which it is connected than are the make-up of like trim members devoid of said perforation.
Claim 12
Dependent Claim
24 words
A method according to claim 12 wherein said sacrificial metal is from the group consisting of aluminum, zinc, cadmium, magnesium and base alloys thereof.
Claim 13
Dependent Claim
12 words
A method according to claim 13 wherein said sacrificial metal is aluminum.
Claim 14
Dependent Claim
19 words
A method according to claim 12 wherein said layer of metal has a thickness in excess of 0.5 mil.
Claim 15
Dependent Claim
19 words
A method according to claim 15 wherein said layer of metal has a thickness in excess of 3 mils.
Claim 16
Dependent Claim
13 words
A method according to claim 12 wherein said perforating is a slitting operation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |