| US 7,575,489 B2 | ||
| Small watercraft capable of suppressing vibration and noise of the vessel body | ||
| Shintaro Abe, Saitama (Japan); Tsuyoshi Kumasaka, Saitama (Japan); Toshinori Hanai, Saitama (Japan); and Hiroshi Iwakami, Saitama (Japan) | ||
| Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Aug. 17, 2007, as Appl. No. 11/889,973. | ||
| Claims priority of application No. 2006-229223 (JP), filed on Aug. 25, 2006. | ||
| Prior Publication US 2008/0050992 A1, Feb. 28, 2008 | ||
| Int. Cl. B63H 11/00 (2006.01) | ||
| U.S. Cl. 440—52 [440/38] | 16 Claims |
| 1. A watercraft, comprising:
a recess disposed at a rear portion of a hull constituting a lower portion of the watercraft; and
a jet pump accommodated in the recess,
wherein a dynamic damper is disposed as an adjunct at a pump mounting portion that attaches the jet pump to the hull, the
dynamic damper including a stay, a rubber and a weight, the stay being attached to the pump mounting portion, the rubber being
disposed on an upper surface of the stay, and the weight being disposed on an upper surface of the rubber,
wherein the dynamic damper is mounted to an inside surface of the pump mounting portion by a bolt, and the stay, rubber and
weight are concentric with an axis of the bolt.
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