Platinum heater for electrical smoking article having ohmic contact
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United States of America Patent
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-
Nov 12, 1996
Issued Date -
N/A
app pub date -
Sep 28, 1994
filing date -
Mar 11, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thin film layer of primarily platinum is deposited onto a ceramic substrate and electrical connections are applied to the platinum layer to form a heater. In a preferred embodiment, the electrical connections comprise two electrically conductive posts fixed to the ceramic substrate at a first end and electrically contacting the platinum heater layer near this first end. Preferably, the heater layer forms mounds at each post and a thinner region therebetween, resulting in a resistance profile which concentrates heating in the thinner region and reduces undesired heating of the post area. Such heaters can be employed individually or in conjunction with other similar heaters.
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