Assembled seal disc for a crankshaft
US5265566A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1991 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Dec 23, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2175
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A crankshaft for a two stroke engine requiring a seal disc on each crank pin is formed by forging, machining and heat treating without a seal disc and then applying a two part seal disc to each crank pin. The two parts of the seal disc have a mating interface in line with the center of the crank pin and a semi-circular recess in each part surrounds half of the crank pin. The parts are dimensioned to effect an interference fit on the crank pin when assembled with sufficient force. The parts are secured together by laser welding, bolts or by adhesive bonding. In the case of welding, the parts are assembled with dowels normal to the interface to maintain the proper alignment during welding and to reinforce the strength of the final assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.