The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2020
Filed:
Nov. 20, 2018
Applicant:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata-shi, Shizuoka, JP;
Inventors:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/00 (2006.01); B63H 11/02 (2006.01); F04D 3/00 (2006.01); F04D 29/52 (2006.01); F04D 29/08 (2006.01);
U.S. Cl.
CPC ...
F04D 29/086 (2013.01); B63H 11/02 (2013.01); F04D 3/005 (2013.01); F04D 29/528 (2013.01);
Abstract
A jet propulsion device includes an impeller housing, an impeller, a sleeve, a first ring-shaped elastic body, and a second ring-shaped elastic body. The first ring-shaped elastic body is disposed between the impeller housing and the sleeve, and is located between a first end and a middle of the sleeve in an axial direction of the sleeve. The second ring-shaped elastic body is disposed between the impeller housing and the sleeve, and is located between a second end and the middle of the sleeve in the axial direction of the sleeve.