Driving power transmission device
US4966268A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 30, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Jun 30, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A driving power transmission device having a clutch provided between a first shaft and a second shaft relatively rotatable to each other for transmitting a driving power is provided, wherein a housing to which the first shaft is connected and a piston provided in the housing for actuating the clutch define a cylindrical space in order to receive a plurality of blades rotatable with the second shaft. High viscous fluid is filled within the cylindrical space defined by the housing and the piston. Each of the blades has a convexly curved side surface and a concavely curved side surface located at opposite sides in rotational direction. When the first shaft rotates faster than the second shaft, the convexly curved side surfaces of the blades compulsorily displaces the high viscous fluid within the space in order to generate a pressure actuating the clutch through the piston. In this forward torque transmission, the tranmissive torque becomes relatively large. When the first shaft rotates slower than the second shaft, the concavely curved side surfaces of the blades compulsorily displace the high viscous fluid in order to generate a pressure for actuating the clutch. In this reverse tor…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.