Central vacuum system wall valve
US5111841A · kind A · utility
14Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Nov 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/698
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A central vacuum system wall valve is described which includes a valve cap capable of being pivotally cammed to open position by its interaction with the roomside hose as this hose is moved to inserted position within the wall valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.