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US 5,249,129 AGranted
Method and system for dispensing precise amount of fluid with automatic set reset
OwnerAlain Lamoureux, Mario Beaupreinventors
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OwnerAlain Lamoureux, Mario Beaupreinventors
Estimating the term…
A method and an automatic control system for dispensing a desired precise amount of a fluid from a reservoir by automatic control of a pump. The fluid is discharged through an operator actuable dispensing mechanism which is operated by a user. More particularly, but not exclusively, the system is associated with a gas pump apparatus. The system detects a slow-down or a stoppage in the discharge of the fluid by sensing a signal at the output of a counter which is provided with the gas pump. These signals actuate the controls circuit to sense parameters of the counter whereby to initiate a slow rate of discharge of the fluid from the pump during a predetermined time period before a preset integral amount and after the slow-down or after the reactivation of the actuable dispensing mechanism if a stoppage of the mechanism was detected. After the integral amount is reached, the pump is shut off during a shut off period of time after which shut off period of time, the pump is re-activatable by actuation of the actuable dispensing mechanism. Accordingly, this system greatly facilitates the dispensing of a precise volumeric or cost amount of a fluid, such as gasoline.
A method of dispensing a desired precise amount of a fluid from a reservoir by an operator controlling the operation of a pump, and wherein said fluid is discharged and controlled by an operator through an actuable dispensing mechanism operated by said operator at said pump, said method comprising:
An automatic control system for dispensing a desired precise amount of a fluid, by means of a pump, from a reservoir to a dispensing element having an orifice and provided with an operator actuable dispensing mechanism to actuate said pump and control the rate of discharge of said fluid through said orifice, said system having control means to permit dispensing a desired precise amount of said fluid by an operator and having detection means to detect a slow-down or a stoppage in said rate of discharge as controlled by an operator of said actuable dispensing mechanism, said control means having rate discharge control means for slowing the rate of discharge of said fluid by said pump during a predetermined time period before a preset integral amount and after said slow-down is detected or after a reactivation of said actuable dispensing mechanism, if a stoppage thereof was detected, and after said integral amount shutting off said pump and maintaining said pump shut off for a predetermined shut off period of time and after which shut off period of time said pump is automatically placed in a reactivatable mode for actuation of said actuatable dispensing mechanism.
Dependencies are inferred from the claim text.