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:
Apr. 23, 1996
Filed:
Aug. 23, 1994
Chester A Garis, Jr, Gloucester, VA (US);
Newport News Shipbuilding and Dry Dock Company, Newport News, VA (US);
Abstract
In a marine propulsor which includes an electric motor with a rotor, a bearing assembly supporting the rotor, and a plurality of propulsor blades and a blade assembly driven by the motor, improved cooling/lubricating system includes an inlet through which coolant/lubricant is supplied to the bearing assembly and the motor, a passage communicating with the inlet through which the coolant/lubricant flows, and an outlet located adjacent the trailing edge of the blade assembly through which the coolant/lubricant is expelled, whereby the expulsion of coolant/lubricant through the outlet provides additional forward thrust to the propulsor. The outlet may be located in the blade hub of the blade assembly or, alternatively, the outlet may comprise a plurality of holes located in the trailing edges of the blades of the blade assembly.