Air actuated fluid control valve with fluid supported diaphragm
US4486001A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Jul 22, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K11/044
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An air actuated adhesive application control valve using a resilient diaphragm to control reciprocation of the valve stem. Unsupported portions of the diaphragm are supported by a layer of the incompressible adhesive trapped within a fluid cavity adjacent one major surface of the diaphragm. Adhesive is permitted to enter the fluid cavity when the valve is in the closed position, but is prevented from escaping therefrom by a separate valve mechanism carried by the valve stem when the valve is in the opened position. The second valve element also serves as a stop to limit travel of the reciprocating stem, thereby controlling the valve opening clearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.