Rectangular gate valve
US7766305B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2007 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Aug 19, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K51/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rectangular gate valve having an improved driving action is disclosed. The rectangular gate valve of the present invention includes a sealing member, which opens or closes a wafer moving passage, a main shaft, which is coupled to the sealing member and has a guide member, and a housing bracket, which has a first guide slot, into which the guide member is inserted. The gate valve further includes a valve drive unit, which is provided in the housing bracket and has an air cylinder, a piston, a piston shaft, a moving unit and a connection link. The gate valve further includes a guide bracket, which has a vertical bracket, a second guide slot and a horizontal bracket. The gate valve further includes a guide link, which is moved along the second guide slot to guide movement of the main shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.