Valve connector
US5740835A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1997 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Apr 21, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87965
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A connector adapted for a quick connection to and for sealing and filling a valve assembly, such as a Schraeder Valve. The connector provides a secondary containment feature which prevents leakage when removing the connector, thereby improving performance and efficiency. The connector includes a collet member at one end that fits over the threaded portion of the valve assembly and, when closed, compresses a seal that engages the external threads of the valve, thereby eliminating the need for threading an external fitting on the valve assembly. As the system pressure increases, an internal plunger, having a forward flow orifice and a rear inlet orifice, is axially displaced and depresses the valve assembly stem. Simultaneously, the forward orifice passes ahead of an internal O-ring and allows fluid flow. As pressure is relieved from the system, the plunger and forward flow orifice move behind the internal O-ring and seal the piston chamber, thereby preventing leakage when removing the connector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.