Snap switch having low resistance
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United States of America Patent
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Apr 12, 1994
Issued Date -
N/A
app pub date -
Mar 1, 1993
filing date -
Oct 29, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
In a preferred embodiment, a snap switch which employs a conical contact mounted at the free end of a spring blade. The contact completes an electrical circuit by contacting and electrically joining two, round, spaced apart terminals. The resulting dual radii contact provides high unit pressure and a minimum of polymer-forming wiping action. The switch introduces little resistance into the electrical circuit, since the spring blade carries no current. The terminal wires are of nickel with sleeves of oxidized nickel bonded thereto in the region where the wires pass through the base of the switch. The oxide provides a tenacious surface for the adherence thereto of sealing glass to insulatively bond the wires to the base.
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