Marine propulsion – Screw propeller – With means effecting or facilitating movement of propulsion...
Patent
1997-10-31
1999-03-02
Basinger, Sherman
Marine propulsion
Screw propeller
With means effecting or facilitating movement of propulsion...
440 61, B63H 2010
Patent
active
058762590
ABSTRACT:
A tilt cylinder apparatus for a boat propeller unit comprising a cylinder unit containing an inside cylinder and an outside cylinder, an opening portion of the cylinders being closed by rod guides, a piston which is connected to an end of a piston rod placed through the rod guides and disposed slidably in the inside cylinder, a reservoir chamber which is formed between the inside cylinder and the outside cylinder and contains a fluid chamber and an air chamber, a communicating path which is formed in the rod guides and ensures a communication between the rod side chamber and the reservoir chamber through a conduit pipe disposed in the reservoir chamber, and a selecting valve which is disposed in the rod guides and selects an opening or closing of the communicating path following an outside operation, wherein when the communicating path is opened, air pressure in the air chamber of the reservoir chamber pushes the piston rod out of the cylinder unit so as to tilt up the boat propeller unit.
REFERENCES:
patent: 3990660 (1976-11-01), Pipoz
patent: 4784625 (1988-11-01), Nakahama
patent: 4944705 (1990-07-01), Kashima et al.
Basinger Sherman
Showa Corporation
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