Electric heating – Heating devices – Tool or instrument
Reexamination Certificate
2007-03-30
2010-06-08
Pelham, Joseph M (Department: 3742)
Electric heating
Heating devices
Tool or instrument
C219S481000, C219S517000, C392S472000, C392S480000, C222S146500
Reexamination Certificate
active
07732736
ABSTRACT:
A hot melt adhesive hose assembly comprises a heater circuit wrapped around an external surface portion of the hose assembly, a temperature sensor, and an elongated thermal fuse which is likewise wrapped around an external surface portion of the hose assembly such that successive spiral turns of the thermal fuse are effectively interposed between successive spiral turns of the heater circuit. The thermal fuse may be electrically connected in series with the heater circuit so as to effectively terminate electrical power to the heater circuit as a result of the melting of the thermal fuse, or alternatively, the thermal fuse may be electrically connected in series with the temperature sensor, so as to detect abnormal temperature levels at substantially any location throughout the length of the hose assembly.
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Fuller Christopher R.
Heerdt Dieter B.
MacLean Mairi
Illinois Tool Works Inc.
Law Offices of Steven W. Weinrieb
Pelham Joseph M
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