TRIM MEMBERS AND PRODUCTION THEREOF

• US 3,830,634 A
• Filed: 03/29/1972
• Issued: 08/20/1974
• Est. Priority Date: 03/29/1972
• Status: Expired due to Term

• Current Assignee: Pittsburgh National Bank (The PNC Financial Services Group, Inc.)
• Original Assignee: Donald R. Zaremski, Jack M. Beigay
• Inventors: Zaremski, Donald R., Beigay, Jack M.
• Primary Examiner(s): Curtis, A. B.
• Assistant Examiner(s): Crutchfield, O. F.
• Application Number:
  US05/239,146
• Time in Patent Office: 874 Days
• Field of Search: 29/191.6 204/197
• US Class Current: 204/196.18
• CPC Class Codes: B60R 13/04 External Ornamental or guard strips; Ornamental inscriptive devices thereon fastening strips or bars to sheets or plates by means of clips F16B5/12
• CPC Class Codes: C23F 13/02 cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
• CPC Class Codes: Y10S 428/926 Thickness of individual layer specified
• CPC Class Codes: Y10S 428/933 Sacrificial component
• CPC Class Codes: Y10T 428/12354 Nonplanar, uniform-thickness material having symmetrical channel shape or reverse fold [e.g., making acute angle, etc.]
• CPC Class Codes: Y10T 428/12389 having variation in thickness
• CPC Class Codes: Y10T 428/12729 Group IIA metal-base component
• CPC Class Codes: Y10T 428/12757 Fe
• CPC Class Codes: Y10T 428/12785 Group IIB metal-base component

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.

Claims

2. An assembly according to claim 1 wherein said first metal is plain carbon steel.

3. An assembly according to claim 2 wherein said sacrificial metal is from the group consisting of aluminum, zinc, cadmium, magnesium and base alloys thereof.

4. An assembly according to claim 3 wherein said sacrificial metal is aluminum.

5. An assembly according to claim 1 wherein said coating has a thickness in excess of 0.5 mil.

6. An assembly according to claim 5 wherein said coating has a thickness in excess of 3 mils.

7. 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.

8. 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.

9. A composite article according to claim 8 wherein said sacrificial metal is aluminum.

10. A composite article according to claim 7 wherein said layer of sacrificial metal has a thickness in excess of 0.5 MIL.

11. A composite article according to claim 10 wherein said layer of sacrificial metal has a thickness in excess of 3 mils.

12. 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.

13. A method according to claim 12 wherein said sacrificial metal is from the group consisting of aluminum, zinc, cadmium, magnesium and base alloys thereof.

14. A method according to claim 13 wherein said sacrificial metal is aluminum.

15. A method according to claim 12 wherein said layer of metal has a thickness in excess of 0.5 mil.

16. A method according to claim 15 wherein said layer of metal has a thickness in excess of 3 mils.

17. A method according to claim 12 wherein said perforating is a slitting operation.