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Assigneel'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedex Georges Claude
InventorMichel Viton
Estimating the term…
The invention relates to an auxiliary apparatus for controlling at least one electrically operated functional device (3), which is designed to replace a main unit (5) for controlling the said at least one functional device (3), and which can be plugged into terminals (7, 9, 11) for connecting the latter that are provided for this purpose. The said apparatus (1) comprises, for each functional device (3), a manually operated switch (12) interposed between a line (14) for delivering an electric control potential, this line being intended to be connected to an associated supply terminal (9), and an associated line (16) for transmitting the electric control potential to the said at least one functional device (3). It furthermore comprises, for each switch (12), an associated device (18) for controlling safety means (20) for taking the said electric control potential to the said at least one switch (12), the actuation of the said safety means (20) being caused by the first open state of the said at least one switch (12).
Auxiliary apparatus for controlling at least one electrically operated functional device, which is designed to bypass a main unit for controlling the at least one functional device, and which can be connected to the main unit by plugging into terminals provided for this purpose, the apparatus comprising, for each functional device, a manually operated switch interposed between a line for delivering an electric control potential, the line for delivering an electric control potential being connectable to an associated supply terminal, an associated line for transmitting the electric control potential to the at least one functional device, and an associated device for each said switch for controlling a safety means for taking the electric control potential to the at least one switch, the actuation of the safety means being caused by the first open state of the at least one switch.
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
Term ended 24 Feb 2019 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The invention relates to an auxiliary apparatus for controlling electrically operated functional devices, such as solenoid valves, designed to replace a main control unit such as, for example, an automatic controller, should it fail, and more particularly to an auxiliary apparatus for controlling valves of a gas delivery facility also known as a gas cabinet.
2. Description of the Related Art
Further characteristics and advantages of the invention will emerge from the following description, given by way of example but without any limiting character, with regard to the appended drawing which shows an electrical circuit diagram of the apparatus according to the invention.
Shown in the single FIGURE is an auxiliary apparatus 1 for controlling at least one and preferably several electrically operated functional devices 3 such as, for example, solenoid valves of a gas cabinet.
This auxiliary apparatus 1 is designed to replace a main unit 5 for controlling the solenoid valves 3, such as an automatic controller, for example should this unit fail, and can be plugged into terminals 7, 9 and 11 of this unit 5 that are provided for this purpose.
The auxiliary apparatus 1 comprises, for each solenoid valve 3, an associated manually operated switch 12. Each switch 12 comprises a first moving contact 13, allowing the control potential to be transmitted to a predetermined functional device 3 in the closed position of the switch 12 and to stop this control potential being transmitted in the open position of the switch 12.
For this purpose, each switch 12 is interposed between, on the one hand, a line 14 for delivering an electric control potential, this line being intended to be connected to an associated supply terminal of the unit 5, namely the connection terminal 9, and, on the other hand, an associated line 16 for transmitting the electric control potential to a predetermined solenoid valve 3, this line being intended to be connected to an associated output terminal, namely a connection terminal 7.