Refrigeration – Automatic control – Time or program actuator
Reexamination Certificate
2006-04-18
2006-04-18
Norman, Marc (Department: 3744)
Refrigeration
Automatic control
Time or program actuator
C062S175000, C062S510000, C417S002000, C417S012000, C417S245000, C417S290000
Reexamination Certificate
active
07028491
ABSTRACT:
A compressor assembly having a first compression mechanism operatively coupled to a first motor and a second compression mechanism operatively coupled to a second motor. The first compression mechanism compresses the vapor from a low pressure to an intermediate pressure and the second compression mechanism compresses the vapor from the intermediate pressure to a discharge pressure. An electrical circuit supplies electrical current to the first and second motors during operation of the compressor assembly. The electrical circuit includes means for, during start-up of the compressor assembly, initiating the supply of electrical current to the first motor at a first time and initiating the supply of electrical current to the second motor at a second time wherein the first time precedes the second time by a time lapse.
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Baker & Daniels
Norman Marc
Tecumseh Products Company
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