Axially adjustable thrust bearing for jet propulsion units

Details Axially adjustable thrust bearing for jet propulsion units Axially adjustable thrust bearing for jet propulsion units

2005-04-05

2005-04-05

Swinehart, Ed (Department: 3617)

Marine propulsion

Screw propeller

Shafting

C440S038000

Reexamination Certificate

active

06875067

ABSTRACT:
The present invention relates to a jet propulsion unit (1) for propulsion of a waterborne craft comprising at least one impeller pump (3) with a pump housing (4) in which an impeller shaft (22) or ajournal (21) connected to said impeller shaft (22) is is rotatably journalled in bearings, and an impeller (7) blades (24), the impeller (7) being fixed to said impeller shaft (22) or journal (21) so as to follow the rotation of the impeller shaft (22), the impeller blades (24) being arranged at the impeller ( ) with a play of the blades (25) between each impeller blade (24) and the inside (15) of the pump housing (4). According to the invention the jet propulsion unit (1) also comprises an axially adjustable thrust bearing (27) arranged to cooperate with the impeller shaft (22) for adjusting said play (25).

REFERENCES:
patent: 5366396 (1994-11-01), Schulze
patent: 6053783 (2000-04-01), Brunn

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