Automatic spray dispenser with integrated test apparatus |
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| 申请号 | US37937373 | 申请日 | 1973-07-16 | 公开(公告)号 | US3837532A | 公开(公告)日 | 1974-09-24 |
| 申请人 | SAHATJIAN E; MAURER G; | 发明人 | SAHATJIAN E; MAURER G; | ||||
| 摘要 | Automatic aerosol spray apparatus which contains an aerosol container with a mechanically actuated spray valve, includes a drive motor for driving a mechanism which actuates the valve at regular intervals each initiated by a relatively brief motor drive cycle during which the motor is energized first through a timer circuit and then through a motor drive switch is improved by light actuated testing apparatus integrated therewith. The testing apparatus includes a light actuated photocell which procudes an electrical output for controlling a test switch electrically connected in parallel with the motor drive switch so that the spray apparatus is tested by illuminating the photocell causing the motor to drive through a cycle and actuate the aerosol spray. In a preferred embodiment, the apparatus is energized by a battery and a battery test circuit is connected to the battery and also to a battery test indicator which is activated by the test switch. Thus, by illuminating the photocell, the spray apparatus is actuated and the battery test indicator is operated for observation. | ||||||
| 权利要求 | 1. In automatic spray apparatus for use with an aerosol container having a metering valve mechanism which includes a spray valve moveable to an operative position to release a spray burst of material from the container at regular intervals an electrical motor drive for cyclically moving tHe spray valve to the operative position, a source of electrical energy for the drive motor, a motor switch actuated by the motor drive for coupling the source to the motor during a portion of the motor drive cycle and a timer for controlling energization of the motor, means for testing said apparatus comprising, a light actuated photocell producing an electrical output, and a test switch in parallel with the motor switch controlled by the photocell output, whereby illumination of the photocell causes the motor to drive through a cycle moving the spray valve to the operative position. 2. Automatic spray apparatus as in claim 1 wherein, the photocell output causes the test switch to close, energizing the motor for so long as the photocell is illuminated. 3. Automatic spray apparatus as in claim 1 wherein, the motor drive cycle is a fraction of the regular interval, the motor is energized through the motor switch during a fraction of the motor drive cycle, and the motor is energized through the timer circuit during a fraction of the motor drive cycle. 4. Automatic spray apparatus as in claim 3 wherein, testing by illuminating the photocell can be commenced before or after a motor drive cycle. 5. Automatic spray apparatus as in claim 4 wherein, the timer operation schedules the regular intervals and the motor drive cycles, and said timer schedules are not altered by said testing. 6. Automatic spray apparatus as in claim 1 wherein, the source is a battery, the motor has two input terminals, one terminal of the battery connects directly to one terminal of the motor, the other terminal of the battery connects to a common voltage point, and the test switch connects the other terminal of the motor to the common voltage point when the photocell is illuminated. 7. Automatic spray apparatus as in claim 6 wherein, the other terminal of the motor connects to the common voltage point through the motor switch or through the test switch or through the timer circuit. 8. Automatic spray apparatus as in claim 1 wherein, at least part of the apparatus is contained in a housing and the other terminal of the battery is grounded to the housing, whereby the motor is energized by connection of the other terminal thereof to ground through the motor switch or the test switch or through the timer circuit. 9. Automatic spray apparatus as in claim 1 wherein, the source is a battery, the motor test circuit is electrically coupled to the battery, a battery test indicator is coupled to the battery test circuit, and energization of the battery test indicator is controlled by the test switch. 10. Automatic spray apparatus as in claim 9 and further including, a counter driven by the motor for counting motor drive cycles, and a container indicator coupled to the output of the counter, whereby the container indicator is actuated when a pre-determined number of motor drive cycles are counted. |
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