AUTOMATIC INITIATION OF PRIMING SEQUENCE FOR METERING PUMPS

(19)

(11)

EP 3 611 375 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	08.07.2020 Bulletin 2020/28

(43)	Date of publication A2:
	19.02.2020 Bulletin 2020/08

(21)	Application number: 19199018.3

(22)	Date of filing: 13.09.2018

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International Patent Classification (IPC):

F04B 17/04^(2006.01)
F04B 43/04^(2006.01)
F04B 49/06^(2006.01)
F04B 23/02^(2006.01)

F04B 43/00^(2006.01)
F04B 49/02^(2006.01)
F04B 13/00^(2006.01)
F04B 49/10^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME
	Designated Validation States:
	KH MA MD TN

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Priority:

14.09.2017 US 201762558476 P
28.11.2017 US 201715824682

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	18194371.3 / 3456964

(71)	Applicant: Milton Roy, LLC
	Ivyland, PA 18974 (US)

(72)	Inventors:
	Carman, Jason Gardner, KS 66030 (US) Fairfield, Nile Prairie Village, KS 66208 (US)

(74)	Representative: Samson & Partner Patentanwälte mbB
	Widenmayerstraße 6 80538 München 80538 München (DE)

(54)	AUTOMATIC INITIATION OF PRIMING SEQUENCE FOR METERING PUMPS

(57) A metering pump is typically used to move a specified volume of liquid in a specified amount of time. Because it may be desirable to maintain fluid in the pumping system such that the metering pump is maintained in a primed condition, an automatic prime detection function is provided by monitoring the current to a solenoid assembly of the pump. A loss of prime condition can then be detected by comparing the measured current to a characterized selected current value such that operation of the metering pump can be changed based on load.

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