Refrigeration – Processes – Defrosting or frost inhibiting
Reexamination Certificate
2007-04-20
2008-09-09
Tapolcai, William E (Department: 3744)
Refrigeration
Processes
Defrosting or frost inhibiting
C062S150000, C062S176600, C062S248000
Reexamination Certificate
active
07421847
ABSTRACT:
Apparatus, systems and methods are disclosed for efficient elimination of door and frame condensation at widely utilized commercial freezer/refrigeration display cases. The apparatus includes a local controller unit connected with an array of case sensors including an internal case temperature sensor, an external case frame temperature sensor and a dew point sensor. The case frame temperature sensor and dew point sensor are housed to thermally isolate sensing elements thereof from effects of frame temperature changes and ambient air temperature in the vicinity of a sensing element, and to limit heat transfer by the housing to the sensing elements thereby improving sensing accuracy and apparatus performance.
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Bertsch Patrick M.
Majzner Robert A.
Murray Brent W.
Burdick Harold A.
Geuke Bradley W.
Tapolcai William E
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