Counter-rotating surfacing marine drive with defined X-dimension

Details Counter-rotating surfacing marine drive with defined X-dimension Counter-rotating surfacing marine drive with defined X-dimension

1993-06-25

1995-05-16

Swinehart, Edwin L.

Marine propulsion

Screw propeller

Propeller arrangement

B63H 510

Patent

active

054155762

ABSTRACT:
A marine drive (10) has two counter-rotating surface operating propellers (12 and 14). The drive has a vertical X-dimension (254) in the range of about 13 inches to 19 inches in combination with a shaft-spacing dimension (258) in the range of about 8 inches to 15 inches in combination with a surfacing dimension .gtoreq. zero. In one embodiment, the shaft-spacing dimension is 13.5 inches, the vertical X-dimension is 16 inches, and the surfacing dimension is 2 inches.

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