| 摘要 |
A steering linkage assembly (10) having a resistance assembly (30) for resisting turning movements of a steerable member (17), and a trim assembly (28) for remotely adjusting the length of a linkage (10) between the steerable member (17) and a frame member (12). A trim valve (52, 52', 52,'' 301) is operable between closed and open positions for allowing a trim piston (36) to move from one locked position (C1) to another locked position (C2) to change the length of the linkage (10). A liquid pressurized by a gas pressure source (88) is provided to the resistance assembly (30) and to the trim assembly (28) by a single pressure accumulator assembly (275), or by a dual accumulator assembly (75, 175) providing liquid at a trim pressure and a resistance pressure. The stroke of the trim piston (36) is sufficient for the fluid systems (28, 30, 75, 175, 275) to remain pressurized at all times.
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