Tandem propeller assembly for a marine propulsion unit
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United States of America Patent
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-
May 10, 1994
Grant Date -
N/A
app pub date -
Aug 26, 1992
filing date -
Aug 27, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tandem propeller assembly for use with a marine propulsion unit is disclosed wherein a single shock-absorber assembly is utilized to assure damping effects for both propellers so as to protect the propulsion system from being damaged when either propeller is obstructed by drifting wood or other debris. Each of the preferred embodiments disclosed provides a simple structure for absorbing impacts upon either propeller in a tandem propeller assembly while minimizing any increase in the surface area of contact with the water which would increase the propulsion resistance and would result in speed loss.
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