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:
Jun. 15, 1982
Filed:
May. 08, 1980
John D Spargo, Annapolis, MD (US);
Kenneth R Sasdelli, Annapolis, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A shaft seal assembly includes a rotor rotationally keyed to a propeller ft; a non-rotating, floating bushing surrounding the rotor; and means for maintaining a fluid seal between the bushing and a housing for the seal assembly. The adjacent surfaces of the rotor and the bushing define a water lubricated bearing interface wherein one of the surfaces is formed of a thin, compliant material and the other surface has axially extending grooves formed therein. The lubrication grooves are arranged in an alternating pattern wherein adjacent lubrication grooves extend from opposite surfaces edges and have portions which axially overlap in spaced apart relationship.