Vacuum valve
US10132414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Sep 16, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/36
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vacuum valve improving product performance of a packing ring to extend a replacement period of the packing ring is disclosed. As an opening and closing driving guide groove including a protruding groove section and first and second inclined groove sections is defined in each of both side surfaces of a driving block, and an L-motion roller inserted into and moving along the opening and closing driving guide groove is provided on an L-motion block, when the L-motion roller is disposed at an end of the first inclined groove section, one side surface of a valve blade closes an inlet, and when the L-motion roller is disposed at an end of the second inclined groove section, one side surface of the valve blade closely contacts an inner surface of the housing. The packing ring provided on a closing surface of the valve blade is blocked from contacting air or fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.