F04D 9/02

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Class  F04D : NON-POSITIVE-DISPLACEMENT PUMPS


Subclass 9/02: Priming; Preventing vapour lock Self-priming pumps

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12168986 Self-priming assembly for use in a multi-stage pumpJan 24, 23Dec 17, 24Pentair Flow Technologies, LLC
12158166 Self-priming apparatus for quick no-water startupNov 01, 21Dec 03, 24JIANGSU UNIVERSITY
12146509 Driven gas-liquid separation starting deviceAug 01, 22Nov 19, 24JIANGSU UNIVERSITY
12104612 Systems and methods for maintaining the prime of a pumpMay 06, 24Oct 01, 24Purdy Enterprises Inc.
12038022 Self-priming jet pumpOct 28, 22Jul 16, 24NINGBO JUNHE INTELLIGENT TECHNOLOGY CO., LTD
11905976 Quick no-water startup apparatus for centrifugal pumpAug 05, 21Feb 20, 24JIANGSU UNIVERSITY
11771003 Transfer assembly for attachment to a front portion of an agricultural vehicle and a method of useSep 25, 20Oct 03, 23Not available
11746795 Centrifugal pump deviceJun 21, 21Sep 05, 23GRUNDFOS HOLDING A/S
11739755 Pneumatic type water-free starting self-priming deviceDec 29, 21Aug 29, 23Jiangsu University
11668329 Centrifugal pumpAug 09, 22Jun 06, 23AQUASTAR POOL PRODUCTS, INC.
11560902 Self-priming assembly for use in a multi-stage pumpJan 27, 20Jan 24, 23Pentair Flow Technologies, LLC
11560896 Device for protecting an electric pump against overpressuresJul 22, 20Jan 24, 23DAB Pumps S.p.A
11555497 Quick startup device for centrifugal pumpFeb 25, 22Jan 17, 23JIANGSU UNIVERSITY
11480180 Self-priming starting device for centrifugal pumpDec 20, 19Oct 25, 22Jiangsu University
11408441 Centrifugal pumpNov 12, 21Aug 09, 22AQUASTAR POOL PRODUCTS, INC.
11391281 Priming protectionAug 04, 20Jul 19, 22Pentair Water Pool and Spa, Inc.; Danfoss Power Electronics A/S;
11268516 Gas-lock re-prime shaft passage in submersible well pump and method of re-priming the pumpNov 08, 19Mar 08, 22Baker Hughes Holdings LLC
11261870 Pump casing with adaptive primer and impellerSep 30, 19Mar 01, 22ITT MANUFACTURING ENTERPRISES LLC
11067086 Centrifugal pumpMay 04, 17Jul 20, 21GRUNDFOS HOLDING A/S
10718337 Self-priming dedicated water feature pumpJul 11, 17Jul 21, 20Hayward Industries, Inc.

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2024/0392,787 INDUCERS FOR CRYOGENIC PUMPS AND RELATED SYSTEMS AND METHODSMay 24, 24Nov 28, 24Not available
2024/0344,519 PRIMER PUMP ASSEMBLY AND A METHOD OF COOLING A MARINE VESSELMar 19, 24Oct 17, 24Not available
2024/0309,872 Self-priming centrifugal pump assembly with multifunctional sealing systemJun 27, 22Sep 19, 24Not available
2024/0068,476 SELF-PRIMING WATER JACKET WITH PRIMING INLETAug 29, 22Feb 29, 24Not available
2023/0265,850 QUICK NO-WATER STARTUP APPARATUS FOR CENTRIFUGAL PUMPAug 05, 21Aug 24, 23JIANGSU UNIVERSITY
2020/0355,185 HEMISPHERICAL ENTRAINMENT-TYPE HIGH-FLOW SELF-PRIMING CENTRIFUGAL PUMPApr 13, 18Nov 12, 20JIANGSU UNIVERSITY
2020/0158,115 INERTIA VACUUM ASSISTED SELF-PRIMING PUMPMar 29, 19May 21, 20AMOS FLUID TECHNOLOGY CO., LTD.
2019/0078,570 Automatic Initiation of Priming Sequence for Metering PumpsNov 28, 17Mar 14, 19Milton Roy, LLC
2018/0163,727 IMPELLER PUMPDec 11, 17Jun 14, 18MP Pumps Inc.
2018/0080,449 Self-Priming Dedicated Water Feature PumpJul 11, 17Mar 22, 18Hayward Industries, Inc.
2018/0073,509 CENTRIFUGAL PUMP ASSEMBLYSep 11, 17Mar 15, 18GRUNDFOS HOLDING A/S

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Patents Issued To Date - By Filing Year

Average Time to Issuance