B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
B63H 11/02 (2006.01) B63B 1/38 (2006.01) B63H 11/08 (2006.01) B63H 23/06 (2006.01) B63H 23/32 (2006.01)
Patent
CA 2403931
To prevent contact of water with an impeller shaft. A water jet propulsion apparatus is provided with an impeller 32 rotatably disposed in a stator 31 forming a channel 18 and a waterproof seal 37 provided between a collar 40 provided around an impeller shaft 35 rotatably supported in the stator and coupled to the impeller and the stator, and the collar 40 is coupled to the impeller 32 via the waterproof seal 42. The impeller shaft 35 is coupled to the rear part of the impeller by screwing, a drive shaft 22 is coupled to the front part of the impeller by splining, a buffer 50 for the rear end of the drive shaft is provided between the front end of said impeller shaft in the impeller and the rear end of the drive shaft, and the peripheral portion of the buffer is formed in a shape such that air escapes from the impeller shaft side toward the drive shaft side when the impeller shaft is screwed.
Fuse Tomohiro
Tsuchiya Masahiko
Dennison Associates
Honda Giken Kogyo Kabushiki Kaisha
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