Replaceable leading edge for a marine drive unit
US6966806B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2004 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Aug 10, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H20/34
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A marine propulsion device is made of first and second portions which are removably attachable to each other. The second portion is the leading edge portion of the nose cone and the drive shaft housing. It can also comprise a portion of the skeg. The second portion is configured to crush more easily in response to an impact force than the first portion. This can be accomplished by making the second portion from a different material than the first portion, which can be aluminum, or by providing one or more crush boxes within the structure of the second portion to cause it to yield more quickly to an impact force and thus protect the first portion which is the more critical structure of the marine device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.