Oil utilized as motor protector trip for scroll compressor

Pumps – Condition responsive control of pump drive motor – Responsive to pump lubricant – sealant – or coolant condition

Reexamination Certificate

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Details

C184S006100, C184S006160

Reexamination Certificate

active

10862497

ABSTRACT:
A scroll compressor has lubricant flow which communicates lubricant onto a motor protector when adverse conditions are present causing the motor protector to trip the motor and stop further rotation. The lubricant is returned to an oil sump through a normal return path. The normal return path outlet may be positioned above the motor protector such that lubricant will contact the motor protector when adverse conditions are present, or the outlet may be remote from the protector. When the outlet is remote from the protector, a funnel and tubing divert the oil to the motor protector under adverse conditions. Alternatively, a passage communicating with the normal return path is selectively blocked when an adverse condition is present. At that time, lubricant is forced into an alternative oil path, which is positioned above the motor protector.

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International Search Report, dated Jan. 21, 2004.

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