Method of making a composite article including a body having a decorative metal plate attached thereto

• US 4,604,786 A
• Filed: 12/19/1984
• Issued: 08/12/1986
• Est. Priority Date: 11/05/1982
• Status: Expired due to Term

• Current Assignee: The Grigoleit Company
• Original Assignee: The Grigoleit Company
• Inventors: Howie, Robert K. Jr.
• Primary Examiner(s): Moon, Charlie T.
• Application Number:
  US06/683,329
• Time in Patent Office: 601 Days
• Field of Search: 29/513, 29/432, 29/558, 10/27 PH, 10/86 C, 72/324, 72/379, 24/36, 24/96, 24/101 B, 59/72, 59/77, 411/477, 156/664, 74/553, 200/340, 200/308, 400/490-493, 400/493.1
• US Class Current: 29/513
• CPC Class Codes: B23P 15/00 Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
• CPC Class Codes: H01H 11/00 Apparatus or processes specially adapted for the manufacture of electric switches processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88
• CPC Class Codes: H01H 3/12 Push-buttons
• CPC Class Codes: Y10T 24/3615 Integral
• CPC Class Codes: Y10T 29/49922 by bending over projecting prongs

Abstract

A method of manufacturing a composite article including a hollow body having a decorative metal plate attached thereto. The method includes the forming of a decorative metal plate and the attachment of the plate to a hollow body. The method can be best described by its application to the manufacture of a push button which involves the following: Forming a rectangular sheet of aluminum which sheet has at least one decorative brushed surface. Machining the brushed aluminum surface of the aluminum sheet in an annular pattern around the perimeter of the sheet to remove a uniform thickness of the aluminum thereby leaving a central rectangular island of brushed aluminum. The central rectangular island thus formed is surrounded on all sides by the machined surface which functions as an apron around the island. All of the machined surface apron on both long sides of the rectangular island is removed leaving tabs of apron extending from the opposite short ends of the rectangular island. The tabs are bent away from the brushed aluminum surface so that they extend at generally right angles to the brushed aluminum surface of the island. The metal plate thus formed is attached to the plastic shell by inserting the tabs into passages formed in one end of the plastic shell while positioning the island against the plastic shell. The tabs are crimped to lock the aluminum plate to the plastic shell to complete the push button.

Claims

1. A method of manufacturing a composite article including a body having a decorative metal plate attached thereto, the method including the steps of:

selecting a metal sheet having at least one decorative surface,

machining the decorative surface of the metal sheet to remove a uniform thickness of metal and leave a central island of metal with a decorative surface surrounded on all sides by the machined surface which defines an apron around the island,

removing some of the machined surface apron leaving tabs of apron attached to the island,

bending the tabs away from the machined surface to extend at generally right angles to the decorative surface of the island,

inserting the tabs in openings extending through a surface of the body while positioning the decorative plate against the surface of the body, and

bending the tabs to lock the decorative plate to the body by means of a tool located on the opposite side of the surface of the body to which the plate is attached.

2. The method of claim 1 further characterized in that:

the metal sheet having at least one decorative surface is a rectangular sheet of aluminum,

the decorative surface is a brushed surface,

the central island with the decorative metal surface formed by the machining is a rectangular island having a surface of brushed aluminum,

the tabs of apron extend from opposite sides of the rectangular island, and

the body is formed of plastic having openings extending through one surface thereof and the tabs of the decorative aluminum plate are inserted in these openings while the decorative plate is positioned against this surface.

3. A method of manufacturing a metal plate having integral tabs to be attached to a body by inserting the tabs into slots extending through a surface of the body and bending the tags into locking engagement with the body, the method including the steps of:

selecting a metal sheet having a decorative surface,

machining the decorative surface of the sheet to remove a uniform thickness of metal from the sheet, thereby leaving a central island with a decorative surface having the thickness of the original sheet with the island surrounded on all sides by an apron of the thinner machined surface, and

removing the annular apron around some of the island leaving oppositely located tabs extending from the island.

4. The method of claim 3 including the further step of:

bending the tabs away from the decorative surface of the island to extend generally at right angles to this surface.

5. The method of claim 3 in which:

the metal plate is an aluminum plate,

the metal plate is rectangular in shape,

the decorative surface is a brushed surface,

the central island is rectangular in shape, and

the oppositely located tabs extend from opposite sides of the rectangular island.