Shutoff valve having a unitary valve body
US5232020A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jul 1, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87957
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A shutoff valve is provided having a body enclosing a chamber that defines a continuous fluid passageway. A plunger resides in the chamber and is slidably positionable between a closed position wherein the fluid passageway is occluded and an open position wherein the fluid passageway enables fluid flow therethrough. A sealing member is also positioned in the passageway, which circumscribes the plunger to effectuate a seal when the plunger is in the closed position. A spring is compressibly mounted in the fluid passageway against the plunger to bias the plunger in the closed position. The chamber is characterized by a series of fluid-communicating sections formed therein which cooperate with a plurality of stages integrally positioned on the plunger to define the manner in which the valve is assembled and operated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.