The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2011
Filed:
Feb. 20, 2007
Jim E. Delaloye, Mesa, AZ (US);
Jim E. Delaloye, Mesa, AZ (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A system for controlling lubricant displacement from a machine during turbomachine shutdown sequence includes a motor, a pump, a control valve, and a motor control unit. The motor is selectively energized from a power bus to rotate at a rotational speed and supply a drive force to the pump. The pump, in response to the drive force, draws fluid from a fluid and supplies the fluid to the machine. The control valve is movable between at least a first position, in which the control valve fluidly communicates the pump with a lubrication fluid source, and a second position, in which the control valve fluidly communicates the pump with a gaseous fluid source. During the shutdown sequence, the motor control unit controllably energizes the motor from the power bus to thereby control its rotational speed in accordance with a schedule that will displace at least a substantial volume of lubricant in the rotating machine with fluid from the gaseous fluid source.