Propeller for boat

Details Propeller for boat Propeller for boat

2007-02-26

2009-02-10

Sotelo, Jesus D (Department: 3617)

Marine propulsion

Screw propeller

With vibration dampening

C440S083000, C416S135000, C464S089000

Reexamination Certificate

active

07488225

ABSTRACT:
A propeller for a boat includes a propeller shaft having a shaft hole, a shaft sleeve mounted in the shaft hole of the propeller shaft and provided with a metal core with a through hole for insertion of a driving shaft of the boat, and a shock-absorbing member covering an outer surface of the metal and having an outer surface contacted with an inner surface of the propeller shaft that surrounds the shaft hole; and a lock unit mounted on the driving shaft for fixing the driving shaft in the through hole of the shaft sleeve, so that the propeller is rotatable by the driving shaft. When the propeller bumps hard things during rotation to result in vibration to the propeller, the shock-absorbing member can absorb the vibration so as to protect the driving shaft from damage.

REFERENCES:
patent: 4452591 (1984-06-01), Fishbaugh et al.
patent: 4566855 (1986-01-01), Costabile et al.
patent: 5252028 (1993-10-01), LoBosco et al.

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