Ceramic glow plug
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 30, 2018
Issued Date -
N/A
app pub date -
Feb 1, 2013
filing date -
Mar 12, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A ceramic glow plug includes a ceramic heater; a tubular sleeve which holds the outer circumference of the ceramic heater with a front end portion thereof protruding from the front end of the sleeve; and a tubular housing which surrounds a rear end portion of the ceramic heater and has a mounting portion for mounting the housing. The sleeve has a small-diameter portion which is accommodated in a front end portion of the housing and has an outer diameter smaller than the inner diameter of the front end portion of the housing, and a large-diameter portion which is connected to the small-diameter portion, disposed frontward of the front end portion of the housing, and has a diameter larger than the inner diameter of the front end portion of the housing. The front end portion of the housing is welded to the large-diameter portion.
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