F04B 1/22

Sub-Class

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Description

Class  F04B : POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS


Subclass 1/22: Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (F04B 3/00 takes precedence; fluid-driven pumps F04B 9/08; control of reciprocating machines or pumps in general F04B 49/00) having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
10598146 Hydraulic pump-motorAug 08, 14Mar 24, 20Komatsu Ltd.
10590920 Pump deviceNov 03, 15Mar 17, 20Danfoss A/S
10527029 Axial piston pumpMay 15, 14Jan 07, 20HYDAC DRIVE CENTER GMBH
10495074 Pump arrangementNov 03, 15Dec 03, 19Danfoss A/S
10458387 Hydrostatic axial piston machineNov 30, 16Oct 29, 19Robert Bosch GmbH
10400742 Hydraulic machine with floating cylindersNov 30, 16Sep 03, 19MERLO GALFRÉ INNOVATION LAB S.R.L.
10247178 Variable displacement axial piston pump with fluid controlled swash plateMar 28, 16Apr 02, 19Robert Bosch GmbH
10145367 Piston pump and valve plate of piston pumpJun 04, 15Dec 04, 18KYB Corporation
10071440 Device for producing metal memberAug 29, 14Sep 11, 18Komatsu Ltd.
9964211 Piston of axial piston pump motor, cylinder block of axial piston pump motor, and axial piston pump motorFeb 20, 14May 08, 18Kawasaki Jukogyo Kabushiki Kaisha
9920751 Hydraulic axial piston machineJun 24, 11Mar 20, 18ROBERT BOSCH GMBH
9849482 Hydraulic pump and piston for such a hydraulic pumpMay 16, 14Dec 26, 17HYDAC DRIVE CENTER GMBH
9782795 Method for coating a pump componentApr 30, 14Oct 10, 17HYDAC DRIVE CENTER GMBH
9771929 Stress reduction in hydrostatic cradle bearingMay 02, 14Sep 26, 17CATERPILLAR INC.
9676465 Piston pumpSep 12, 14Jun 13, 17ULTRAFLEX S.P.A.
9670915 SBS piston pump housing assemblyMar 27, 14Jun 06, 17CATERPILLAR INC.
9664184 Axial piston pump having a swash-plate type constructionMar 12, 14May 30, 17HYDAC DRIVE CENTER GMBH
9644480 Fluid pressure rotary machineJul 18, 13May 09, 17KYB CORPORATION
9410540 Variable displacement hydraulic motor/pumpNov 17, 11Aug 09, 16KOMATSU LTD.
9341170 Axial piston machineAug 05, 11May 17, 16ROBERT BOSCH GMBH

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2019/0211,812 A HYDRAULIC DEVICE, A METHOD OF MANUFACTURING A HYDRAULIC DEVICE AND A GROUP OF HYDRAULIC DEVICESMay 17, 17Jul 11, 19Not available
2016/0025,081 HYDRAULIC PUMP WITH DOUBLE DIRECTION OF ROTATIONMar 27, 14Jan 28, 16HYDRO LEDUC
2015/0078,930 FLUID PRESSURE PUMPMar 26, 13Mar 19, 15MITSUBISHI HEAVY INDUSTRIES, LTD.

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Top Owners in This Subclass

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Patents Issued To Date - By Filing Year

Average Time to Issuance