Apparatus for the remote control of a transfer operation

• US 4,834,150 A
• Filed: 07/16/1987
• Issued: 05/30/1989
• Est. Priority Date: 09/11/1986
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Graf, Werner, Schade, Bernd, Jahn, Franz-Xaver, Gadke, Herbert, Steinhauer, Peter
• Primary Examiner(s): Cusick, Ernest G.
• Application Number:
  US07/074,132
• Time in Patent Office: 684 Days
• Field of Search: 222/23, 222/52, 222/26, 222/630, 222/639, 191/1 R, 141/1, 141/98, 141/94, 141/83, 141/192, 141/DIG. 2, 141/392, 137/551, 137/552.7
• US Class Current: 141/98
• CPC Class Codes: B67D 7/266 involving digital counting
• CPC Class Codes: B67D 7/32 Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid

Abstract

The invention relates to apparatus for the remote control of transfer operations, in which a material to be transferred is taken from a supply tank into tanks to be filled, where a control signal with start and stop function is given by a hand station (1) to a control device at the delivery system for maintaining the transfer operation, while holding the filling valve open and in operation. The hand station (1) is equipped with a separate start and stop signal transmitter (14; 15) and a status indicator is also provided for assisting the operator.

Claims

1. An apparatus for the remote control of transfer operations in which a material is transferred from a supply system into a tank comprising:

a hand station having a start signal transmitter and a stop signal transmitter for generating start and stop signals, respectively;

a state indicator;

a filling valve for providing material from said system to said tank; and

a control device for controlling said state indicator and filling valve, said control device including receiving means for receiving said start and stop signals;

said control device activating said state indicator when said control device is initially activated;

said control device opening said filling valve and deactivating said state indicator when a start signal is received;

said control device activating said state indicator after a first preset time period;

said control device at the end of a second preset time period ending after said first time period closing said valve if another start signal is not received during said second time period but maintaining said valve open if another start signal is received during said second time period;

said control device closing said valve, whenever a stop signal is received.

2. Apparatus according to claim 1 further comprising a pump for pumping material through said filling valve, said control device being provided to operate said pump simultaneously with said valve.

3. Apparatus of claim 2 wherein said pump is selectively started by said control device when said filling valve is opened, and said pump is stopped or the pump output is reduced when the filling valve is closed.

4. Apparatus according to claim 3, wherein the hand station is provided with an infrared transmitter with a start and stop signal transmitter (14;

15) with a coding device, and the control device comprises an infrared receiver which can be tuned to the infrared transmitter by a single-command decoder (4) for security.

5. Apparatus according to claim 4, wherein the infrared receiver (2) of the control device is followed by a decoder (3), the output of which is connected through said single-command decoder (4) to counting device (13) with a decimal decoder (6) which obtains its operating frequency from a clock generator (5);

said counting device including a first time-setting device (7) for determining the first time interval and a second time setting device (8) for determining the second time interval, an output of the first time-setting device being connected to the state indicator (11), and an output of the time-setting device being connected to a power stage (9) for operating the filling valve.

6. Apparatus according to claim 1, wherein the control device switches the state indicator (11) on when the stop signal is received.

7. Apparatus according to claim 1, wherein the hand station is provided with an infrared transmitter with a start and stop signal transmitter (14;

15) and the control device comprises an infrared receiver which can be tuned to the infrared transmitter.