Cam drive apparatus having a magnetic gear
US7438035B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2006 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Nov 16, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2820/032
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cam drive apparatus comprising a magnetic gear adapted to communicate rotational movement between a crankshaft and a cam shaft, wherein said magnetic gear comprises an outer member comprising a plurality of circumferentially spaced magnet means, said outer member being mounted for rotation with one of said crankshaft and camshaft, an inner member comprising a plurality of circumferentially spaced magnet means, said inner member being concentrically arranged within said outer member to define an annular gap therebetween, and an intermediate member comprising a plurality of circumferentially spaced ferromagnetic pole pieces located within said annular gap between said inner and outer members and being mounted for rotation with the other of said crankshaft and camshaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.