Cylindrical cam stirling engine drive
US6701709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Aug 16, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02G2244/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A Stirling engine includes a grooved cam drive mechanism with followers having a pair of longitudinally displaced bearings. One roller bearing is adapted to ride along an upper surface of the cam groove, while the other roller bearing is adapted to ride along a lower surface of the cam groove. Each follower includes an outer shaft on which a first bearing is mounted, and an inner shaft extending through the outer shaft on which a second bearing is mounted. A preferably annular space is provided between the inner and outer shafts when the follower is in an unloaded state. Then, when the follower is engaged within the grooved cam, the inner shaft is cantilevered relative to outer shaft within the annular space and results in pre-loading the first bearing against one inner surface of the groove cam and the second bearing against an opposite inner surface of the grooved cam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.