Back to results
US 11,702,177 B2Granted
Propulsion unit
AssigneeABB AB
InventorsPetri Pellinen, Ari Turunen, Sakari Siipilehto
Life of this patent
Estimating the term…
Abstract
A propulsion unit includes a housing supported on a vessel. A propeller shaft extends in the housing. The propeller shaft is rotatably supported with a first bearing and a second bearing. A propeller is attached to at least one end of the propeller shaft. The first bearing includes a first radial bearing and a first thrust bearing. The first radial bearing is a sliding bearing positioned axially inside the first thrust bearing. The first bearing is positioned at the first end of the housing and the second bearing being positioned at the second end of the housing or vice a versa.
Claims19
A propulsion unit comprising:
- a housing being supported with a support arm on a hull of a vessel, the housing having a first end and a second opposite end in a longitudinal direction of the housing,
- a propeller shaft extending in the longitudinal direction of the housing within the housing, the propeller shaft having an axis of rotation and being rotatably supported within the housing with a first bearing and a second bearing,
- a propeller being attached to at least one end of the propeller shaft outside the housing,
- wherein the first bearing includes a first radial bearing and a first thrust bearing, the first radial bearing being a sliding bearing positioned axially inside the first thrust bearing, the first bearing being positioned at the first end of the housing and the second bearing being positioned at the second end of the housing or vice a versa,
- wherein a passage is arranged from the support arm to the first bearing inside the housing providing a route for service personnel to reach the first bearing in order to be able to service and/or change the first bearing.
2 more elements
A vessel, comprising at least one propulsion unit including:
- a housing being supported with a support arm on a hull of a vessel, the housing having a first end and a second opposite end in a longitudinal direction of the housing,
- a propeller shaft extending in the longitudinal direction of the housing within the housing, the propeller shaft having an axis of rotation and being rotatably supported within the housing with a first bearing and a second bearing,
- a propeller being attached to at least one end of the propeller shaft outside the housing,
- wherein the first bearing includes a first radial bearing and a first thrust bearing, the first radial bearing being a sliding bearing positioned axially inside the first thrust bearing, the first bearing being positioned at the first end of the housing and the second bearing being positioned at the second end of the housing or vice a versa, and
- wherein a passage is arranged from the support arm to the first bearing inside the housing providing a route for service personnel to reach the first bearing in order to be able to service and/or change the first bearing.
2 more elements
A propulsion unit comprising:
- a housing being supported with a support arm on a hull of a vessel, the housing having a first end and a second opposite end in a longitudinal direction of the housing,
- a propeller shaft extending in the longitudinal direction of the housing within the housing, the propeller shaft having an axis of rotation and being rotatably supported within the housing with a first bearing and a second bearing,
- a propeller being attached to at least one end of the propeller shaft outside the housing,
- wherein the first bearing includes a first radial bearing and a first thrust bearing, the first radial bearing being a sliding bearing positioned axially inside the first thrust bearing, the first bearing being positioned at the first end of the housing and the second bearing being positioned at the second end of the housing or vice a versa, and
- wherein the first radial bearing is sealed with a first seal at an axially inner end of the first radial bearing, the first seal being detachable so that removal of the first seal provides access in the axial direction to the first radial bearing in order to service and/or change the first radial bearing.
2 more elements
Dependencies are inferred from the claim text.