Marine propulsion – Hydraulic fluid drive for propelling means
Reexamination Certificate
2011-02-08
2011-02-08
Olson, Lars A (Department: 3617)
Marine propulsion
Hydraulic fluid drive for propelling means
C114S151000
Reexamination Certificate
active
07883384
ABSTRACT:
A self-contained hydraulic thruster for vessel. The hydraulic thruster incorporates a lower unit housing tiltably attached to a lower unit mounting tube attached to a base, a tube whose upper end is attached through the lower unit housing, and a shaft slidably disposed within the tube. A substantial length of tube extends downwards from the lower unit housing, thus providing support for the shaft. An actuator is disclosed which extends and retracts the shaft relative to the tube. A steering clamp is releasably attached to an end of the shaft which protrudes through the top of the lower unit housing. A steering clamp key traveling in a shaft keyway, or a shaft key in combination with a steering clamp keyway, help maintain constant the angular orientation between the steering clamp and the shaft. A steering gear meshing with a steering assembly, or an actuator driving a tie rod, provide steering.
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OHLA® 200 Overhung Load Adaptors Descriptive Bulletin describing models 210, 210F, 215, 210-10, 210-12, and 215-12. (1 page).
Olson Lars A
Rooy PA Paul S.
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