Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1990-11-26
1992-10-13
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
200 11G, 200292, 174260, H01H 1958, H01H 900
Patent
active
051553066
ABSTRACT:
A switch substrate for a switching device that includes an electrical contact brush, the substrate formed with alternating conductive and insulating portions on its surface and having a groove formed between the conductive and insulating portions to eliminate insulating abrasion powder from the surface of the contact brush. The top of the conducting portions is higher than the bottom of the groove but can be above or below the surface of the insulating portions. To form such a substrate, a conductive layer having projections is formed and is engaged with a mold so that the projections are compressed. After the substrate is removed from the mold, the compressed projections extend to their actual height.
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Iijima Shunichi
Takemura Masanori
Scott J. R.
Seiko Epson Corporation
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