Liquid dispensing apparatus

Claim 2

A liquid dispensing apparatus comprising: a valve arranged at a flow passage led out from a liquid tank in which liquid is stored; a flow meter provided at said flow passage to generate a signal proportional to the amount of liquid supplied through said flow passage; a reloadable memory card in which data necessary for dispensing liquid is stored wherein said data is proportional to an amount of liquid available; a card read/write device in which said reloadable memory card is inserted, said card read/write device carrying out read and write of data with respect to said reloadable memory card; and a CPU connected to said card read/write device and flow meter for opening said valve depending on data of said reloadable memory card read out by said card read/write device and receiving said signal from said flow meter to operate the amount of liquid passing through said passage, to thereby close that valve when either a desired amount of liquid is supplied or said amount of liquid supply through said flow passage as reflected by said proportional signal exceeds said amount of liquid available as reflected by said date; said card read/write device carrying out writing of new data with respect to said memory card based on said operation of said CPU.

Claim 3

A liquid dispensing apparatus as defined in claim 1, wherein said reloadable memory card is a magnetic card.

Claim 4

A liquid dispensing apparatus as defined in claim 1, wherein said reloadable memory card is a color card which is varied in color depending on data stored therein.

Claim 5

A liquid dispensing apparatus as defined in claim 1, wherein said flowmeter is a pulse generating flowmeter.

Claim 6

A liquid dispensing apparatus as defined in claim 4, wherein said flowmeter is connected to said CPU through an A/D converter.

Claim 7

A liquid dispensing apparatus as defined in claim 1, wherein said CPU includes a memory circuit which stores therein data read out by said card read/write device.

Claim 8

A liquid dispensing apparatus as defined in claim 1, wherein said CPU is connected to said valve through an ON-OFF switch which is controlled by said CPU to operate said valve.

Claim 9

A liquid dispensing apparatus comprising: a liquid tank for storing liquid therein, said liquid tank being communicated to a pressure source for applying pressure liquid in said liquid tank when liquid is to be dispensed; a flow passage connected to said liquid tank to feed liquid therethrough; a valve arranged at said flow passage; a flow meter provided at said flow passage to generate a signal proportional to the amount of liquid supplied through said flow passage; a reloadable memory card in which data necessary for dispensing liquid is stored wherein said data is proportional to an amount of liquid available; a card read/write device in which said reloadable memory card is inserted, said card read/write device carrying out read and write of data with respect to said reloadable memory card; a CPU connected to said card read/write device and flow meter for receiving data of said memory card from said card read/write device to open said valve depending on said data and receiving said signal from said flow meter to operate the amount of liquid passing through said flow passage, to thereby close said valve when either a desired amount of liquid is supplied or said amount of liquid supplied through said flow passage as reflected by said proportional signal exceeds said amount of liquid available as reflected by said data; and a memory circuit connected to said CPU for storing therein data of said memory card read out by said card read/write device; said card read/write device carrying out writing of new data with respect to said memory card based on said operation of said CPU.

Claim 10

A liquid dispensing apparatus comprising: a liquid tank for storing liquid therein, said liquid tank being communicated to a pressure source for applying pressure liquid in said liquid tank when liquid is to be dispensed; a flow passage connected to said liquid tank to feed liquid therethrough; a valve arranged at said flow passage; a flow meter provided at said flow passage to generate a signal proportional to the amount of liquid supplied through said flow passage; a reloadable memory card in which data necessary for dispensing liquid is stored wherein said data is proportional to an amount of liquid available; a card read/write device in which said reloadable memory card is inserted, said card read/write device carrying out read and write of data with respect to said reloadable memory card; a CPU connected to said card read/write device and flow meter for receiving data of said memory card from said card read/write device to open said valve depending on said data and receiving said signal from said flow meter to operate the amount of liquid passing through said flow passage, to thereby close said valve when either a desired amount of liquid is supplied or said amount of liquid supplied through said flow passage as reflected by said proportional signal exceeds said amount of liquid available as reflected by said data; and a memory circuit connected to said CPU for storing therein data of said memory card read out by said card read/write device; said card read/write device carrying out writing of new data with respect to said memory card based on said operation of said CPU.

Claim 11

A liquid dispensing device as defined in claim 8, wherein said pressure source is an ambient atmosphere.

Claim 12

A liquid dispensing device as defined in claim 8, wherein said pressure source comprises a non-oxidizing gas source.

Claim 13

A liquid dispensing device as defined in claim 8, said pressure source comprises one of an ambient atmosphere and a non-oxidizing gas source.