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:
Sep. 26, 1989
Filed:
May. 23, 1988
Daniel F McCormick, Oshkosh, WI (US);
Brunswick Corporation, Skokie, IL (US);
Abstract
A marine drive (1) for a boat (3) includes a longitudinally extending propeller shaft (18, 20) which concentrically carries the hub (21, 22) of a propeller (10, 11) at the aft end of the shaft, with the shaft serving to rotatably drive the hub. The shaft is provided with a threaded outer peripheral portion (48, 36) at its end. The hub is provided with a rearwardly disposed annular flange (44, 32) and an annular rearwardly facing recess (45, 33) having a threaded outer periphery (47, 35). A dual-threaded nut (49, 37) is removably disposed within the hub recess. The outer nut threads engage the hub threads, while the inner nut threads engage the threads of the propeller shaft. A device (56, 43) is provided for securing the nut against threadable rotation in its mounting. The inventive concepts may be utilized with a single or dual propeller system or any other hub and shaft connection.