Temperature sensor with quick response
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United States of America Patent
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Sep 12, 2006
Grant Date -
Dec 1, 2005
app pub date -
Mar 25, 2004
filing date -
Mar 28, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A temperature sensor (1) including a cylindrical metal tube (3) having a front end side blocked, a thermistor element (2), and a sheath member (8) connected to the thermistor element (2) and held in the inside of the metal tube (3), wherein: the metal tube (3) has a small-diameter portion (33) located on the front end side and entirely having an inner diameter smaller than the outer diameter of the sheath member (8), and a large-diameter portion (36) located on the rear end side of the small-diameter portion (33) and having a diameter larger than the outer diameter of the small-diameter portion (33); and a thermistor sintered body (21) is held in the small-diameter portion (33) and cement (10) is filled in between a front end of the thermistor sintered body (21) and a front end of an inner wall of the metal tube (3) and on the front end side viewed from a rear end surface of the thermistor sintered body (21).
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