Method of making articles such as electrically insulated housings using striped laminates

• US 3,938,725 A
• Filed: 01/04/1974
• Issued: 02/17/1976
• Est. Priority Date: 01/04/1974
• Status: Expired due to Term

• Current Assignee: Chomerics, Inc. (Parker-Hannifin Corporation)
• Original Assignee: TME Corporation
• Inventors: Jesse, Harold W., Jagoe, William H., Tonnesen, Carl W., Hardwick, John H.
• Primary Examiner(s): Smith, Al Lawrence
• Assistant Examiner(s): Watson, Robert C.
• Application Number:
  US05/430,679
• Time in Patent Office: 774 Days
• Field of Search: 29/472.9, 29/480, 29/481, 29/627, 29/592, 29/475, 113/120 A, 113/116 P, 113/120 UE, 156/554, 156/211, 156/217, 156/224, 156/196
• US Class Current: 228/155
• CPC Class Codes: B29L 2031/3412 Insulators
• CPC Class Codes: H01B 19/00 Apparatus or processes specially adapted for manufacturing insulators or insulating bodies manufacture of porcelain for electric insulation C04B33/26
• CPC Class Codes: H01G 4/224 Housing; Encapsulation
• CPC Class Codes: Y10T 156/1048 to form dished or receptacle-like product

Abstract

Articles, such as wholly or partly insulated housings for electrical and electronic components, are made from bands composed of a relatively wider strip of one material and a relatively narrower strip of a second material laminated to each other, the band thus being "striped" in that it has one zone constituted by a laminate of materials and at least one other zone constituted by solely the first material. The articles are shaped and blanked in the band so that predetermined parts of the article are formed from only the first material and the rest of the article is formed from the laminate of the two materials.

Claims

1. A method of making housings for electronic components from sheet materials comprising the steps of forming a long band composed of at least a first strip of one sheet material and a second strip of a second sheet material laminated together, each strip being of uniform length, the first strip being wider than the second strip and the second strip being positioned on the first strip such that the band has at least one first longitudinally continual zone constituted by only the first strip of material and at least one second longitudinally continual zone constituted by a laminate of both strips, and forming a succession of articles from the band by shaping and blanking the band, the shaping and blanking being controlled to locate at least one mounting lug of each housing in the first zone of the band and a cup-like body of each housing in the second zone of the band.

2. A method according to claim 1 wherein the first strip is a metal and the second strip is a polymeric material.

3. A method according to claim 1 wherein the first strip is an electrically conductive metal and the second strip is an electrically insulating material.

4. A method according to claim 3 wherein, in the step of forming the band, the second strip is laminated to a medial portion of the first strip such that there are two first zones on the band, one extending longitudinally along each edge of the band and wherein, in the shaping and blanking step, each cup-like body is shaped and blanked exclusively in the second zone of the band with the strip of electrically insulating material located on the inside of the body, and at least one mounting lug is shaped and blanked exclusively in each of the first zones of the band.

5. A method according to claim 4 wherein the first strip is copper and the second strip is a fluorocarbon polymer.