Torsionally twisting propeller drive sleeve
US5322416A · kind A · utility
22Cited by
25References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1993 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Mar 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2023/342
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.