Marine drive with easier shifting
US5052958A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1989 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Sep 14, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H20/28
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A marine drive (10) has a driveshaft housing (20) including a bell housing (22) with an exhaust passage (30) therethrough directing exhaust gas and cooling water, and a shift shaft (34) extending through the exhaust passage and journaled in the bell housing by a bushing (52) in a bore (38) in a section (40) of the bell housing. The interface (50) of the bushing and the bore is subject to corrosion from exhaust gas and cooling water. Shifting is eased by enabling a portion (54) of the bushing to contract radially inwardly toward the shift shaft (34) due to the noted corrosion, without binding the shift shaft and otherwise impeding rotation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.