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US 11,268,593 B2Granted
Airboat transmission for driving counter-rotating propellers
OwnerShane Lavalette, Steve Rutherford Waltoninventors
Life of this patent
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Abstract
The present innovation relates generally to propulsion mechanisms for propeller-driven vehicles and vessels, and, more particularly, to gear-driven transmissions for airboats.
Claims8
A gear-driven transmission, with a transmission housing, comprising:
- a first driven gear coaxially affixed to an inner driven shaft;
- a second driven gear coaxially affixed to a propeller hub;
- an assembly of multiple gears rotatably fitted within the transmission housing and mechanically coupled with an engine drive shaft for driving the inner driven shaft and the propeller hub in a counter-rotating fashion;
- a floating fore bearing set rotatably and coaxially attached to the inner driven shaft;
- and
- a floating aft bearing set rotatably and coaxially attached to the inner driven shaft at a position aft of the floating fore bearing set;
- wherein the propeller hub is mounted to the gear-driven transmission;
- and
- wherein the inner driven shaft is mounted within the propeller hub and there is no dedicated oil or lubrication system for the floating fore bearing set or the floating aft bearing set.
6 more elements
Dependencies are inferred from the claim text.