Marine propulsion – Screw propeller – Having transmission
Reexamination Certificate
2007-01-30
2007-01-30
Olson, Lars A. (Department: 3617)
Marine propulsion
Screw propeller
Having transmission
C440S005000, C475S072000
Reexamination Certificate
active
11256988
ABSTRACT:
A boat propulsion system interposed between a prime mover and a propeller shaft comprises a hydro-mechanical transmission including a hydrostatic transmission part and a gear transmission part. The hydrostatic transmission part includes a variable displacement hydraulic pump having a movable swash plate and a hydraulic motor fluidly connected to the hydraulic pump. The hydraulic pump is driven by the output rotary force of the prime mover. The gear transmission part is drivingly interposed between the hydrostatic transmission part and the propeller shaft so that the gear transmission part is driven by the input rotary force of the hydraulic pump with the assistance of the output rotary force of the hydraulic motor. A hydraulic clutch system may be interposed between the gear transmission part of the hydro-mechanical transmission and the propeller shaft so as to select one of opposite output rotary directions of the propeller shaft.
REFERENCES:
patent: 2749776 (1956-06-01), Fischer et al.
patent: 3905251 (1975-09-01), Greene
patent: 4599916 (1986-07-01), Hirosawa
patent: 4624153 (1986-11-01), Itoh et al.
patent: 4679673 (1987-07-01), Yamaoka et al.
patent: 4864889 (1989-09-01), Sakakibara et al.
patent: 5055094 (1991-10-01), Cataldo
patent: 5328396 (1994-07-01), Hayasaka
patent: 5445580 (1995-08-01), Parraga Garcia
patent: 6099367 (2000-08-01), White et al.
patent: 6533695 (2003-03-01), Pollman et al.
patent: 6701825 (2004-03-01), Langenfeld
patent: 1 203 564 (1965-10-01), None
patent: 199 02 084 (2000-08-01), None
patent: 0 101 358 (1984-02-01), None
patent: 10-194196 (1998-07-01), None
European Search Report for EP 04 02 2610, conducted on Apr. 7, 2005.
Olson Lars A.
Sterne Kessler Goldstein & Fox P.L.L.C.
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