Claims
- 1. In painting apparatus, paint mover means comprising:
- a pump housing;
- a pump in said housing and including a pump face, a paint pumping tube, a tube support cam, pumping roller carrier means, pumping rollers circularly spaced on said carrier means, and motor means for driving said roller carrier means;
- leakage detection means in said housing and including a leakage directing passageway in said pump face, and photoelectric sensor means and light source means associated with said passageway;
- said pump face being comprised principally of upstanding horizontally facing surfaces, and including a cavity receiving said pumping tube, said passageway communicating with the lowermost point in said cavity and extending downward therefrom;
- said passageway having a horizontally extending portion;
- said light source means comprising a light emitter at the bottom of said portion; and
- said photoelectric sensor means including a light sensitive receiver above said emitter for interference with light passage from said emitter to said receiver by leakage paint in said portion.
- 2. In painting apparatus, paint mover means comprising:
- a pump housing;
- a pump in said housing and including a pump face, a paint pumping tube, a tube support cam, pumping roller carrier means, pumping rollers circularly spaced on said carrier means, and motor means for driving said roller carrier means;
- leakage detection means in said housing and including a leakage directing passageway in said pump face, and photoelectric sensor means and light source means associated with said passageway;
- said pump face being comprised principally of upstanding horizontally facing surfaces, and including a cavity receiving said pumping tube, said passageway communicating with the lower most point in said cavity and extending downward therefrom; and
- a leakage receiver tray below said face and said passageway and located under said face and said passageway to collect any leakage paint from said pump face and said housing.
Parent Case Info
This application is a division of application Ser. No. 218,354, now U.S. Pat. No. 4,424,011, filed 12/22/80.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
218354 |
Dec 1980 |
|