Boat propeller drive unit
US4589850A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 1984 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Sep 18, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H20/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In an outboard drive unit for boats, the drive shaft housing is swingable by hydraulic cylinders for trimming and tilting. One end of each cylinder is pivotally journalled in the shield of the drive unit, whereas the opposite cylinder ends bear against abutment surfaces on the carrier fork shanks conventionally supporting the drive shaft housing. An intermediate member, pivotally connected to the cylinders via pivot pins, is pivotally suspended in the carrier fork, moving along with it during trimming and tilting. A pivot pin fixed into the intermediate member constitutes one part of a mechanical latch, the other part being formed of a latch hook (not shown) rotatably journalled on the carrier forks. The latch is thereby completely disengaged upon propeller thrusts during forward travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.