Shift mechanism for marine propulsion unit
Patent 6884131 Issued on April 26, 2005. Estimated Expiration Date: 
January 16, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 16, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2542682 3216392 3217688 3362375 3368420 Shift mechanism for marine propelling unit Shift device for marine propulsion Shift assistor for outboard drive shifting mechanism Bearing arrangement for marine transmission Outboard drive transmission InventorsAssigneeApplicationNo. 10346320 filed on 01/16/2003US Classes:440/75Having transmissionExaminersPrimary: Basinger, Sherman D.Attorney, Agent or FirmForeign Patent References
International ClassB63H023/26AbstractAn outboard motor incorporates a driveshaft and a propulsion shaft driven by the driveshaft. The driveshaft carries a pinion. The propulsion shaft carries forward and reverse gears. The pinion always meshes with the forward and reverse gear and drives the forward and reverse gears in opposite directions relative to each other. A hydraulic forward clutch mechanism couples the forward gear with the propulsion shaft. A hydraulic reverse clutch mechanism couples the reverse gear with the propulsion shaft. A shift actuator selectively operates the forward clutch mechanism or the reverse clutch mechanism to provide forward, reverse and/or neutral running conditions for the outboard motor.Other References
Field of SearchHaving transmissionReversing Reversing Fluid Ambient and clutching medium Mounting feature Clutching medium Coolant and clutching medium Spiral Specific valve Temperature and speed Variable gap or volume Magnetic or electric Resilient or adjustable mounting feature Radial vane Variable gap or volume Separate reservoir Ambient Temperature Ambient and coolant Bi-metallic Vane clutch Viscous shear Automatic regulation Pump-out feature Multiple plate | |
