Pumps – With signal – indicator – or inspection means
Patent
1983-05-27
1985-10-08
Smith, Leonard E.
Pumps
With signal, indicator, or inspection means
417290, 417403, 91275, F04B 910
Patent
active
045457360
ABSTRACT:
A reciprocating ram pump of the well known Willett's type is provided with electrical sensors (S1 and S2) and a solenoid operated valve (56) for controlling reversal of the ram at its delivery and suction stroke limits. The sensor outputs are employed for the purpose of counting the number of strokes executed by the ram in a counting circuit (22) which can be preset by means of keyboard (26) to count until a stroke count corresponding to the preset value (or a threshold value close thereto) as been reached whereupon a warning signal may be produced. The number of strokes counted may be indicated on display (28) for example after conversion into a parameter such as total volume delivered. The preset value entered from the keyboard (26) may likewise be displayed. The sensor outputs may additionally be employed to control a timing circuit (24) which can be preset to time a certain interval corresponding to the delivery stroke rate of the pump falling to or below a certain level. In this event, a warning signal may be produced.
REFERENCES:
patent: 2662477 (1953-12-01), Logan et al.
patent: 3344667 (1967-10-01), Maltby
patent: 3502027 (1970-03-01), Avery
patent: 3649136 (1972-03-01), Ruidisch
patent: 3700360 (1972-10-01), Shaddock
patent: 4198820 (1980-04-01), Roth et al.
patent: 4256437 (1981-03-01), Brown
patent: 4321016 (1982-03-01), Sakamoto et al.
patent: 4325127 (1982-04-01), Major
patent: 4390324 (1983-06-01), Karliner
patent: 4391571 (1983-07-01), Craggs
patent: 4432698 (1984-02-01), Shirakuma et al.
Marshall, Jr. C. O.
Smith Leonard E.
Thomas Willett & Co. Ltd.
LandOfFree
Apparatus for automatically processing slurry does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for automatically processing slurry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for automatically processing slurry will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2217424