Gate valve
US6299133A · kind A · utility
508Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2000 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Dec 21, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve comprises a valve rod for making displacement in accordance with a driving action of a cylinder mechanism; a guide shaft for guiding the valve rod; a valve disk for opening/closing a passage in accordance with a displacement action of the valve rod; a rack connected to the valve rod, for making displacement integrally with the valve rod; a pinion rotatably supported by a casing, for meshing with the rack; and a pillow member connected to the valve disk and formed with a male thread for making engagement with a female thread formed on an inner circumferential surface of the pinion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.