Patent ID: 11912543
Assignee: SUPERIOR GEARBOX COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 19:
20. A method comprising:
operably engaging a first end of a cable to a boat;
rotating a first worm screw and a first worm gear with the drive motor, wherein the first worm screw and the first worm gear define a first lifting stage of a boat lift;
rotating a second worm screw and a second worm gear by the first lifting stage, wherein the second worm screw and the second worm gear define a second lifting stage of the boat lift;
supporting the second worm screw, by a first tapered roller bearing of a tapered roller bearing assembly, at a first end;
supporting the second worm screw, by a second tapered roller bearing of the tapered roller bearing assembly, at a second end opposite to the first end facing the first tapered roller bearing;
rotating a third lifting stage of the boat lift by the rotation of the second lifting stage;
winding the cable around a spool of the third lifting stage;
lifting the boat from a body of water with the cable; and
reducing mechanical noise of the second lifting stage by the tapered roller bearing assembly provided with the second lifting stage.