| 摘要 |
A coin/credit-card/debit-card and credit card activated windshield washer fluid dispensing system that is economically constructed with a minimum number of electrical components, and which is particularly suitable for retrofitting to existing housings built for other dispensing purposes. Through use of the present invention an operator can neatly transfer a metered amount of windshield washer fluid directly into a motor vehicle windshield fluid reservoir under low pressure without the use of a funnel. The system can be used as a stand-alone unit or combined in a housing with other automotive-related systems, such as air/vacuum service units. A first preferred embodiment comprises a timer, pump, and solenoid all operating under standard current whereby upon opening the solenoid and pump activation, windshield washer fluid is transferred from a tank to a low pressure regulator for a pre-determined amount of time. A second preferred embodiment is even simpler in construction than the first preferred embodiment, and lower in cost since it has no pump, wherein windshield washer fluid is gravity-fed from an elevated tank, through the opened solenoid, subsequently through a low pressure regulator and into a dispensing hose. Through use of the variable timer and regulator, the dispensing system can be precisely calibrated to dispense a fixed maximum amount of fluid per unit payment at a chosen dispensing speed. Applications would include, but not be limited to, use in association with car washes, convenience stores, gas stations, rental car facilities, and maintenance garages for buses and other fleet vehicles.
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