| 摘要 |
A progressive shear assembly which is suitably adapted for connecting a marine propeller to a propeller drive shaft in such a manner that a selected resilience and torsional resistance of the propeller with respect to the drive shaft is achieved. An adaptor shaft provided on the propeller drive shaft drivingly engages the propeller through multiple sets of shear rods each having a selected composition and resilience. In the event that the rotating propeller inadvertently strikes an underwater object, the shear rods absorb the torque shock. Accordingly, the shear rods tend to deform and shear to prevent damage to the propeller and propeller drive train components, and can be easily and inexpensively replaced.
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