Marine propulsion – Screw propeller – Propeller arrangement
Patent
1992-05-27
1993-07-27
Swinehart, Edwin L.
Marine propulsion
Screw propeller
Propeller arrangement
440 79, B63H 506
Patent
active
052306445
ABSTRACT:
A marine drive (10) has two counter-rotating surface operating propellers (12 and 14). An upper adaptor spool (48) has a lower threaded outer portion (50) mating with a threaded portion (46) of the vertical bore (26) of the drive housing (20) and supporting the upper gear (42) for rotation about the driveshaft (36) and supporting the driveshaft (36) for rotation within the adaptor spool (48). Vertical bore structure enables assembly from above of the majority of the vertical drive train components into a one-piece unitary integrally cast housing. The vertical distance between the adaptor spool (48) and the lower bearing (118) supporting the vertical driveshaft (36) is about equal to propeller radius. The lower concentric counter-rotating propeller shafts (156, 158) are spaced from the upper input shaft (28) by a distance along the driveshaft (36) in the range of about 9 to 15 inches.
REFERENCES:
patent: 4630719 (1986-12-01), McCormick
patent: 4679682 (1987-07-01), Gray, Jr. et al.
patent: 4764135 (1988-08-01), McCormick
patent: 4795382 (1989-01-01), McCormick
patent: 4832635 (1989-05-01), McCormick
patent: 4832636 (1989-05-01), McCormick
patent: 4869121 (1989-09-01), Meisenburg
patent: 4869694 (1989-09-01), McCormick
patent: 4871334 (1989-10-01), McCormick
patent: 4897058 (1990-01-01), McCormick
patent: 4900281 (1990-02-01), McCormick
Eick Edward C.
Magee Phillip D.
Meisenburg Gary L.
Mixon Charles M.
Weronke Robert B.
Brunswick Corporation
Swinehart Edwin L.
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