Method and valve for preventing unauthorized access
US6568424B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Sep 24, 2001 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Sep 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7877
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve which prevents the filling of a fluid container through a port (6) by an unauthorized party, and, at the same time, allows the filling of the container through the same port (6) by an authorized party. The valve is operated by an actuator means (10) which controls the fluid flow through the valve. The valve combines two major features: (1) operation of the actuator means (10) is by an encoded device (32) whose code is known only to the authorized party; (2) the actuator mean is sealed within the valve housing or container so that physical access to the actuator means (10) is restricted. This combination of features makes the valve tamper-proof and actuatable by authorized parties only. Also disclosed is a valve system and a method for preventing unauthorized access to a fluid container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.