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:
Feb. 13, 1990
Filed:
May. 23, 1988
Daniel F McCormick, Oshkosh, WI (US);
Brunswick Corporation, Skokie, IL (US);
Abstract
A marine drive for a boat (3) includes a longitudianlly extending propeller shaft (17, 37, 38) which effectively carries the propeller hub (18, 41, 42) between a pair of fore and aft conical surfaces (26-29; 44-47; 51-54) which mate with similar conical surfaces associated with the hub. These mating surfaces prevent orbiting movement of the propeller. The mating surfaces also center the hub on its axis and provide for high torque retention. The construction is such that water is kept out of the joint between the hub and propeller shaft, with pre-applied lubricant being retained therein. The inventive concepts may be utilized with a single propeller system (FIG. 2), or dual propeller installation (FIG. 4).