Radial piston damped torsional coupling and machine using same
US8469826B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2011 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Sep 27, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49229
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A damped torsional coupling is utilized to couple a drive shaft to a work shaft while permitting some relative rotation due to torsional vibrations. The coupling includes a second coupler oriented to rotate with respect to a first coupler about an axis through a continuum of negative to positive torque orientations. The first coupler defines a fluted perimeter surface with a number of flutes, distributed with radial symmetry about the axis. The second coupler a number of pistons reciprocally received in respective barrels to define a variable volume chamber fluidly connected to a damping passage. A spring biases the pistons and barrels to extend toward a position in contact with one of the flutes. The contact end may be an edge of a roller that rolls on the fluted perimeter surface in one of the flutes responsive to torques transmitted between the couplers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.