B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
115/10
B63H 20/10 (2006.01) F02B 61/04 (2006.01)
Patent
CA 1054456
Abstract of the Disclosure A hydraulic system for a combined power trim and shock absorbing piston-cylinder unit of an outboard motor includes a reversible pump means having a trim-up port connected by a pressure responsive pilot valve piston cylinder units and a trim-down port through a reverse lock solenoid valve and a down-pilot spool valve providing full drain flow for trim-up and power flow for trim-down. An "up-reverse" pilot valve with a pressure operator is in parallel with the reverse lock valve and provides a restricted by-pass for limited trim-up in reverse. The trim-up hydraulic input or powered side of the cylinder units define a trapped hydraulic system creating memory" in the system so after impact the motor returns to the original trim position. The return side permits relatively free- flow to permit "trail-out" under low impact. At high speed impact, the flow is restricted and cylinder pressure increases. At a selected point, a shock valve within the piston-cylinder opens and absorbs the chock forces. The piston unit includes an inner floating head telescoped into a head secured to the piston rod with a chamber thereby formed to store the liquid flow during shock movement. A metered orifice and check valve allows return to the original trim-set position. -0-
259554
Brunswick Corporation
Na
LandOfFree
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