Boat propulsion apparatus

Details Boat propulsion apparatus Boat propulsion apparatus

1988-09-06

1990-04-03

Peters, Jr., Joseph F.

Marine propulsion

Oscillating propelling means

Fishtail motion propelling means

440 94, B63H 136

Patent

active

049136690

ABSTRACT:
A boat propulsion apparatus having a thrust blade mounted for swinging movement about a generally horizontal swing axis lengthwise of the boat and for turning movement about an upright blade axis, and a swash plate drive for simultaneously swinging the blade about the swing axis in a direction crosswise of the boat and for angularly oscillating the blade about the blade axis to sinusoidally vary the pitch of the blade as the blade is swung crosswise of the boat. A planetary gear type mechanism is provided for adjusting the angle of the swash plate while the boat propulsion apparatus is in operation or when it is stopped. The thrust blade is connected to the blade shaft through an overload release coupling to prevent damage to the thrust blade and propulsion apparatus in the event the thrust blade strikes an obstruction. An improved arrangement for mounting the thrust blade on the swing shaft and for sealing the thrust blade to an enclosure for the boat propulsion apparatus, is also disclosed.

REFERENCES:
patent: 35451 (1862-06-01), Johnson
patent: 659858 (1900-10-01), Palmer
patent: 706198 (1902-08-01), Phares
patent: 1068665 (1913-07-01), Juberg
patent: 1116117 (1914-11-01), Pullen
patent: 1130153 (1915-03-01), Dennis
patent: 1937907 (1933-12-01), Nock
patent: 3508840 (1970-04-01), Lederlin
patent: 4490119 (1984-12-01), Young

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