Controllable air valve for an inflatable body
US4669498A · kind A · utility
Inventor
Key dates
| Filing date | Oct 15, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Oct 15, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7861
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The valve comprises a valve socket to be mounted in the wall of an inflatable body, e.g. by a snap fastener device, and a valve cap having an internal thread for threaded connection with an external thread on the valve socket. The valve socket includes an air duct with a short duct section which is connected with the outer surface of the valve socket only through a number of narrow ducts discharging at the bottom of an annular groove from whose internal edge a number of radial ducts are connected with a central bore provided in the cap. At the internal edge of the annular groove a pressure sensitive annular sealing member is provided which by the pressure from the outside will be pressed out on a larger diameter in the annular groove. By eliminating the pressure action the sealing member reoccupies its initial position in airtight abutment between the bottom plate of the annular groove and an internal annular surface in the cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.