Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Turbo machine
Patent
1993-03-30
1994-06-21
Kwon, John T.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Turbo machine
416 93A, 416134R, 464 89, 464180, F01D 530
Patent
active
053224167
ABSTRACT:
In a marine drive (10), a drive sleeve (50) between the propeller shaft (22) and the propeller hub (34) absorbs shock after the propeller (12) strikes an object by torsionally twisting between a forward end keyed to the propeller hub and a rearward end keyed to the propeller shaft. The drive sleeve is composed of a plastic material providing torsional twisting angular rotation at a first spring rate less than 100 lb. ft. per degree from 0.degree. to 5.degree. rotation, a second higher spring rate beyond 5.degree. rotation, and supporting over 1,000 lb. ft. torque before failure.
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Karls Michael A.
Lindgren Daniel R.
Brunswick Corporation
Kwon John T.
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