Harmonic drive camshaft phaser with phase authority stops
US8322318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | May 24, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/3521
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A camshaft phaser includes a housing with a harmonic gear drive unit disposed therein. The harmonic gear drive unit includes a circular spline and a dynamic spline, a flexspline disposed radially within the circular spline and the dynamic spline, a wave generator disposed radially within the flexspline, and a rotational actuator connectable to the wave generator. One of the circular spline and the dynamic spline is fixed to the housing. A hub is rotatably disposed radially within the housing and attachable to the camshaft and fixed to the other of the circular spline and the dynamic spline. A first arcuate input stop member is rotatable with one of the circular spline and the dynamic spline and is received within a first arcuate output opening defined by at least a first arcuate output stop member rotatable with the other of the circular spline and the dynamic spline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.