초록 ▼

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

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.

대표청구항 ▼

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

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. the driver by means of the eccentric against the inner side of the drive drum so as to return to the starting position before the drive drum has completed the last of the desired number of turns in order after the return to the starting position, when the driver reaches the stop lug, to apply sharp braking to the output shaft. 4. An indexing mechanism according to claim 1, wherein the driver is joined to the output shaft by a driver disc which is arranged at some distance from and parallel with the outer edge of the drive drum and is joined to the output shaft running transversely to the driver, wherein the driver shaft is tiltably mounted between the first and second positions in which the driver extends in one direction substantially at a tangent transversely to the output shaft and parallel with and along the driver disc, and extends in another direction perpendicularly to the one direction over the distance between the driver disc and the drive drum and into the drive drum, and wherein the eccentric and stop lug are disposed in a clearance between the driver disc and the drive drum. 5. Indexing mechanism according to claim 2, wherein it comprises a control command system which, when an order is given for indexing, starts the motor which drives the drive drum in order, as soon as the motor has come up to speed, to connect the driver by means of the eccentric against the inner side of the drive drum so as to return to the starting position before the drive drum has completed the last of the desired number of turns in order after the return to the starting position, when the driver reaches the stop lug, to apply sharp braking to the output shaft. 6. An indexing mechanism according to claim 2, wherein the driver is joined to the output shaft by a driver disc which is arranged at some distance from and parallel with the outer edge of the drive drum and is joined to the output shaft running transversely to the driver, wherein the driver shaft is tiltably mounted between the first and second positions in which the driver extends in one direction substantially at a tangent transversely to the output shaft and parallel with and along the driver disc, and extends in another direction perpendicularly to the one direction over the distance between the driver disc and the drive drum and into the drive drum, and wherein the eccentric and stop lug are disposed in a clearance between the driver disc and the drive drum. 7. An indexing mechanism according to claim 3, wherein the driver is joined to the output shaft by a driver disc which is arranged at some distance from and parallel with the outer edge of the drive drum and is joined to the output shaft running transversely to the driver, wherein the driver shaft is tiltably mounted between the first and second positions in which the driver extends in one direction substantially at a tangent transversely to the output shaft and parallel with and along the driver disc, and extends in another direction perpendicularly to the one direction over the distance between the driver disc and the drive drum and into the drive drum, and wherein the eccentric and stop lug are disposed in a clearance between the driver disc and the drive drum.