Fluid shear coupling apparatus having a modulating valve with a movable aperture
US4913273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Sep 19, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D35/023
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid shear coupling apparatus including a driving member comprising a rotor mounted to a shaft. A driven member including a bearing housing is mounted to the shaft. A complementary surface between the driven member and the driving member is provided between which a shear fluid provides variable coupling according to the proportion of fluid in the reservoir vis-a-vis the fluid shear chamber defined by the complementary surface. A temperature responsive valve is provided to modulate the shear fluid level. The valve may modulate an overlapping inlet having a constant area. An overlap inlet may be define by an arcuate slot or by a fixed size valve aperture. The valve may be pivotable on a valve axis which is eccentric to, and radially outward of, the common axis of the driving and driven members. Temperature responsive rotation of the valve member may be provided by coupling links or by gearing mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.