Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1977-07-18
1979-09-04
Croyle, Carlton R.
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
417 36, 417 63, 417441, F04B 4904
Patent
active
041667131
ABSTRACT:
The disclosure is a system for increasing the reliability of systems for keeping auxiliary liquid-holding tanks filled and reliably functional. A float-operated switch cycles an electric pump to maintain the liquid level between full and nearly full, and a back-flow-preventing check valve is employed and modified (apertured and/or bypassed) to permit slow back leakage to "exercise" the system. The pump, its input to the tank, and the check valve are all located below the pump-turn-on level so that they never lose their prime. One arrangement for testing liquid-level control has a float on a lever arm that operates both the pump-motor-cycling switch and also a low-level switch to energize an alarm. The lever arm also rotates a shaft carrying an indicator dial and/or pointer. The shaft has a manually engageable knob or lever for submerging the float to test the operability of the pump, the alarm, and other parts. A second species of the liquid-level control has a float-operated and manually engageable vertical plunger for submerging the float for operating and testing a level indicator, switches for the pump and the alarm, and other parts.
REFERENCES:
patent: 173662 (1876-02-01), Pease
patent: 1002822 (1911-09-01), Cowles et al.
patent: 2057624 (1936-10-01), Burkhart
patent: 2370099 (1945-02-01), Werder
patent: 3172377 (1965-03-01), Dewar
patent: 3436727 (1969-04-01), Pagano
Croyle Carlton R.
Look Edward
Staubly Ralph F.
LandOfFree
Auxiliary liquid tank does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Auxiliary liquid tank, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auxiliary liquid tank will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2127007