Metal working – Method of mechanical manufacture – Electrical device making
Patent
1985-04-29
1989-03-28
Echols, P. W.
Metal working
Method of mechanical manufacture
Electrical device making
118505, 427163, H05B 300
Patent
active
048151980
ABSTRACT:
This specification is directed to a process for making part of an electrically heated windshield assembly. The process includes the steps of selecting a glass sheet 10. The glass sheet is formed into a windshield configuration. At least a pair of electrically conductive bus bars (14, 16) are formed on the glass sheet. One bus bar (14) extends along a lower edge of the glass sheet. A second of the bus bars (16) extends along at least a short portion (20) of the lower edge of the glass sheet in a location spaced away from the bus bar (14) and near the lower edge of the glass sheet, up a side edge of the lower edge of the glass sheet as an edge portion (22), and along an upper edge of the glass sheet as an upper portion (24). A snap-on protective member (30) is placed on the glass sheet which engages both front and back surfaces of that glass sheet. The snap-on protective member covers over lower portions and side edge portions of the second bus bar (16). The surface of the glass sheet having the bus bars thereon is subjected to a vacuum metal deposition process to form an electrically conductive coating (32) between the bus bars uncovered by the snap-on protective member. Thereafter, the snap-on protective member is removed to complete a part of the electrically heated windshield assembly.
REFERENCES:
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patent: 3523858 (1970-10-01), Peete
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patent: 3893234 (1975-07-01), Levin
patent: 4017661 (1977-04-01), Gillery
patent: 4195590 (1980-04-01), Herrington
patent: 4385226 (1983-05-01), Sauer
patent: 4543466 (1985-09-01), Ramus
Echols P. W.
Ford Motor Company
Johnson William E.
Sadler Clifford L.
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