Marine propulsion – Screw propeller – With means effecting or facilitating movement of propulsion...
Reexamination Certificate
2007-04-16
2008-08-26
Avila, Stephen (Department: 3617)
Marine propulsion
Screw propeller
With means effecting or facilitating movement of propulsion...
Reexamination Certificate
active
07416459
ABSTRACT:
A cylinder is adjustably positionable between a jack plate and a fixed transom bar. A housing has an upper end, a lower end, a bottom cap and a top cap. The housing includes a piston. The piston is axially slidable within the cylinder. The piston has a rod. The rod is coupled to the piston. A bore is provided through the upper cap for the passage of the rod. A fluid handling assembly includes a lower port and an upper port. The lower port extends through the housing adjacent to the lower end. The upper port extends through the housing adjacent to the upper end. A pair of annular recess is provided in the piston. An o-ring and a rectangular ring are provided within each recess. A pair of annular recesses is provided in the upper and lower caps. An o-ring and a rectangular ring are provided within each recess.
REFERENCES:
patent: 4461486 (1984-07-01), Tregonning
patent: 5193821 (1993-03-01), Rehfeld
patent: 5299489 (1994-04-01), Obrecht et al.
patent: 5718613 (1998-02-01), Nakamura
patent: 5782662 (1998-07-01), Icenogle
patent: 5984741 (1999-11-01), Nakamura
patent: 6176170 (2001-01-01), Uppgard
patent: 6409556 (2002-06-01), Vance
Avila Stephen
Dutkiewicz Edward P.
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