Ball valve coupling
US5386967A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Jun 21, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K5/0647
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A coupling for use in a rotary Ball valve having a spherical ball with a passageway therethrough controlling the flow of fluid through the valve. The coupling is particularly suited for use with non-metallic, for example, ceramic, spherical balls which are rotated by torque applied to a metallic actuator shaft extending from the valve body. The coupling includes a plurality of depressions and protrusions formed at the interface of the non-metallic and metallic components. The depressions and protrusions are positioned away from the central axis of the spherical ball. A cushion is interposed between the metallic and non-metallic components to further disperse the force applied to the non-metallic component so that as torque is applied to the shaft the non-metallic component is rotated without breakage thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.