Damper for a personal watercraft

Details Damper for a personal watercraft Damper for a personal watercraft

1997-10-07

1999-09-28

Sotelo, Jesus D.

Marine propulsion

Screw propeller

With vibration dampening

464 75, 74574, 114270, B63H 115

Patent

active

059577401

ABSTRACT:
A damper which can be easily fitted to the engine E of a personal watercraft W having little space, said damper damping the torsional vibration caused by the torsional stress acting on the crankshaft 1 of the engine E mounted in a personal watercraft W. A flange 2, which is a component of the coupling D that couples the crankshaft 1 and the propeller shaft 11 of a propulsion pump P, is fixed to the end of the crankshaft 1 which is adjacent to the pump P. The damper includes a damping mass fixed via an elastomeric member 4 to the periphery of a flange 2 in such a manner that the mass 5 can elastically move with respect to the crankshaft 1 in the direction of rotation.

REFERENCES:
patent: 4787868 (1988-11-01), Hoshiba et al.
patent: 5050446 (1991-09-01), Takashima et al.
Japanese Laid Open Publication No. HEI 1-45923(SHO 64-45923) with Patent Publication No. HEI 8-23304 with an English abstract thereof (Publication No. 01045923 A).
Japanese Laid Open Publication No. HEI 8-152046 with an English abstract thereof (Publication No. 08152046 A).
Japanese Utility Model Publication No. SHO 53-25062 with an English translation thereof.

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