Patent ID: 11873065
Assignee: WAVETAMER LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  F  G  Y | IPC B  F  G  H

Claim 4:
5. A gyroscopic roll stabilizer for a boat, said gyroscopic stabilizer comprising:
an enclosure mounted to a gimbal for rotation about a gimbal axis and configured to maintain a below-ambient pressure;
a flywheel assembly including a flywheel and flywheel shaft, the flywheel assembly configured to precess relative to the gimbal axis, when unlocked, in response to roll of the boat;
one or more bearings for rotatably mounting the flywheel assembly inside the enclosure;
a motor for rotating the flywheel assembly, said motor configured to accelerate the flywheel assembly to a normal operating speed of at least 6000 rpm; and
a bearing cooling system effective to cool the one or more bearings;
wherein the gyroscopic roll stabilizer is configured to lock the flywheel assembly at the start of acceleration and to unlock the flywheel assembly not later than when the speed of the flywheel assembly reaches 75% of its normal operating speed.