Apparatus using aerodynamic rotors for exerting a braking torque upon a rotating shaft
US4994003A · kind A · utility
6Cited by
23References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Feb 13, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T1/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A device for providing a variable retarding torque upon a rotating shaft includes an aerodynamic rotor and control means which is responsive to independent and external signals to continuously vary the ratio of the speed of the aerodynamic rotor as compared to the speed of the rotating shaft. The control means includes a multiple disc, dynamic, torque limiting friction clutch which is operable to vary the torque transferred between the rotating shaft and the rotor. Modulation of the dynamic clutch may be done at any time during active operation of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.