Stop valve
US5076540A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1990 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Nov 6, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6062
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A three-piece angle stop valve comprises a valve body, resilient control sleeve and handle, with no separate fastening or sealing elements required. Inlet line pressure resiliently biases the side walls of the control sleeve and a circumferential sealing flap formed thereon into sealing engagement with the valve bore to prevent leakage. The handle is secured to the valve body by resilient formations which snap into a circumferential groove on the valve body. The handle rotates the control sleeve by means of telescoping splines. Several circumferential and axial reinforcing ribs are formed in the interior of the control sleeve. A collar having a tapered rim in the valve body piercingly engages a corresponding tapered section on the resilient control sleeve to additionally secure the control sleeve against axial downstream movement in the valve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.