Valve apparatus
US4529167A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1983 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Jun 6, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A housing having a longitudinal aperature therethrough, and an exterior surface adapted to be securable to a container. A stem is longitudinally movable within the housing and is cooperatively conformed with the housing such that an annulus exists between a portion of the housing and the stem. The stem includes a plurality of ports allowing fluid communication between the annulus and a longitudinal cavity extending from the top end of the stem. A sealing instrumentality if included proximate a bottom end of the valve to prevent the flow of fluid into the valve annulus when the valve is in a first "closed" position. The stem is adapted to be moved longitudinally within the housing to a second, "open", position wherein the sealing instrumentality is released and fluid may enter the annulus and pass through the ports to exit the valve through the stem cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.