A variable speed hydraulic pump system

WO2025184663A1PCT designated stage Publication Date: 2025-09-04HYTORC DIV UNEX CORP
View PDF 7 Cites 0 Cited by

Patent Information

Application Number
PCT/US2025/018208
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-03-01
Filing Date
2025-03-03
Publication Date
2025-09-04

Smart Images

  • Figure US2025018208_04092025_PF_FP_ABST
    Figure US2025018208_04092025_PF_FP_ABST
Patent Text Reader

Abstract

A hydraulic pump system is disclosed, comprising a brushless direct current (BLDC) motor that drives both a gear pump and a high-pressure piston pump assembly via a common shaft. The gear pump generates pressurized oil up to a predetermined threshold pressure, at which point it is deactivated by a single cut-off valve, optimizing efficiency. The high-pressure piston pump assembly operates continuously, ensuring hydraulic pressure beyond the gear pump threshold. A closed-loop controller regulates the BLDC motor's current, maintaining maximum motor speed as long as the current remains below a predetermined threshold, independent of hydraulic pressure or flow demands. The system further integrates the gear pump and high-pressure piston pump assembly within a pump flange assembly, reducing interfaces and connection points to enhance reliability.
Need to check novelty before this filing date? Find Prior Art

Description

[0001]1 . 2 , , , . , , , ,, , , . , , . , , , , , , , . , , , ,, . 4 . . , , , - . , , ., , . , . . . , , . , , - ' . - , . - . , ' , 7. , , ,. , ., , . . . - - ’ . . , - - . - -1 - . - ,. -11 , . , , - . ,, , . , , ,, - . ,- ,12 . , , , ,- , ,1 . - ,14 . ’ , -1 . , - . -1 ,- ,17. - , .-1 . , - 1 , .-2 - ,. -21 , -22 . , - . , ,2 , 24 - . . , -2 , - . , -2 . , -27 ’ ,. - 2 ’ , -2 . , - . , 1 . . , 2 , , , , ’- . , , . - , . - - , . ,, , , , ,, - .- ,. - - - - . . , 4 , - , , . , ,, , . . ., 7. , - . - ,. . , , 4 . . ,-41. . 42. , 4 , . . . . 44 , , . , . ,- , 4 . , , , . “, ,” “- ,” “ ,,” , ,, , . ,, “” , “” , “. ,” “ “, , ,” “ ,” , , ” 4 , . , ,. . , , , . , "", "" . , "47," "," “..,” , , , , "," "," , , ,. , , 4 , “ ,,,” , ,., ,,, ..,,,, . , , ,, 4 . “ . “ ” ”, “ ”, “ ”, “ ,” “ ,” ..., , . . . .. , 1 . - , , , , - 2 - . - . - . ’ ’- ’. 4 . -- , -, .. , - , -. . - . -- . - . -- - .- - , ,- . - . - . , , , - . , , , , , , , . ,7 . ,- . - . -, . . , -, , . - . , , , , . - . 1 . ’- . , , , ,2 , , , . . - , . ,. . . . - . , , - . , ’ , , , . .,4 , . ,, , , . , . - . ’ - . - . , , , . , . , , -., , , , , . . , . , , 7 . , . , . , , , , , -, , ’ . , ,. , . , . , . , , , , . - ,. , - -- . ., - ,- . , . - . - . ,7 . , , . - . , . , , , - . , ,. ,71 , -. ,- . , - , . - . - , -,72 - . . - . , - ., - ,. , . , , -7 . - - -74 . , , . . . , , ,- . ’ , 7 . . . . , ’ , , ,. ,, — — , ’ . , ’ ,., . ,7 . , . . -77 , ’ - , . . , , ., ” “ ,- . —7 , , , . , ., , , , . , . ’ 7. , . . - , . ’- ., , , . . , ., , . ,. , . , , , , , ,, . ,, , . 1’ . , ., . . ,, , ., 2 ’ - . , , . ’ . , ,, - . , , . . , , . - , ’ ,. ,- , , . , ,4 , . , ,, , - . - ’ ., , , . , , , , , , . , , . , , . , ’ , - - . , . , ,. , . 7 ., , ’ . . , - , - -, ., . . , . . , , , . . , , . . , ,, , . ’ . , - ,, . , . . , - - . ’ , . . , - . 1 - - - , , , ,. ,- -2 . , , , - - . , , , . - - , . . . , ,. ,4 , , - . , -, . , ,. - . , . ,, . , , - . . ,, ., , , , . , - . , , ,. ,, . ,7 , ,. , . , ,, ’ ,- , . , , , . ’ . . , - . , , , , . ,., ,, , . . , ., , . . - , , ,,1 . . , . , , , , , , . ,, ,. ,11 . - . , , .. ,, , . ’, -- , , ,12 , , . ,. - , , 1 ,. . . , , ,, . , . 14 , . , . , . , . ,, ,, 1 . ., .,, , . , - , . , ’1 . ,, , . ,, , . . , 17 , ’, . , , . ,, ’ , . , ’ . , , . ,1 . , , , . ,, , . , ,1. , . , , ,11 , . . ., , .., , . ,111 . , ., , , - , . .. , '112 ,. , , , . , , , . , - , . - ,11 . ,. . ,, ’ -, , - . 114 , . , . , , . .- , . , , ,11 . .. ., , . “”. , 11 . , . , . , . , , , 117 . . , . , . , ,11 . . , ., . 11 . . , .- , , - , , -. -12’ -, . ’. , , , . ,, 121 ,- , -. . , ., , , , . 122 , - , , - - ,, . , - - - . - . , - ,12. , , , . , , , ,124 . , , . - . , - , ,- , , .- ,- - , . , ,12 - ,. , , . , , - -12 , . -,. , , , , . . , - ,127 , , , . . ., - , - -- ,, , . 12 , , , - - . , , - , ,12- - . , , - , . , ,1., , ,- , - . . , , 11 , - , , ,- ,12, , . -. ., - , , , - , ,, - , , -, . , ,, ,1’ . . , ., - , 14 - . . . , 1 , . , , , . - , . , , . -1 , . , - ,. , , ,, , . , , - . .- , 17 - , , , - . - . , - , ,- - , .,1 , - . , - . 1, , , , - , , , , , . ,- . , 14 . , , , - . , , , , - - , . 141 .. - . ,- . ,142 . , , , , , . - .- , . 14 , . - ’ . , 144 , . - ,, , 14 - . - - ., - - . 14 . , ,---- , . , - , , , ,, - . , , . 147 . - - , , - , . , ,, , . ,14 . ,. , . , . 14 , . , , .. , - ,1 . - - , , , .- . . ,-11, , - - ,- , - ,, , . 12 . . , , - , - .,1 . . - , . ,14 . - , , . 1 . . - - , . 1 . - , , . , -17, . . , . . ,1., . , 1 , .. , 1 . 11 , , . . , ,. . 12 . , - , 1' . , - , , .- - . . 14 , -,- .- , , - -1 , . . , , . . - ,1 , .. - , . , 17 , . , . ,1 . , , ,. ,1 . . - , . - , , , - . - -- , , - , ., -, , , , - , , - , . . ,- , - . , - , , -, , , . . , , 17 , , , , , , . . , ,, . . , . . , , , . - -, - -,. - ,, - ., ,171 - . , , , 172 ,- , . - - . - . - -17 . , - , , .. . , , ,, , , . 174 . . , , , , . , 17,,- , - . . , , , . . -17, - , , , . . - . -177 , , . ,. ,, , . ,17 , , - . - . - , 17 . , . , ,1 , , . -, , ,., , , - . 11 . ,- , . , - -12 - - .- , -° °.-° °. , , - ,1 . . . , , ., .- -14 - . , , , , -1 .. . , , , , , , , - ,, - . , 1 , . . . , , . 17 . . ,. , . , .

Claims

. , - ’ , - , - - , - - - , -. , . - , --- - , - , , - ’ , - - , - . . , , - - - , - , - - ’, - - , - . . , - , - - -- ’ , . , -, . , , , ,.-, ,, , . - .. - , -, - .- - , , . - -, . , - . - - .- . , - - . , , , . - , - . - . , , - , , . , , ’ . - .. - , ,., ,. . . - , . . , ., . -, , . ,., , , -. . , , -. -, . .. , - ,. . , -, . , -,, . , -. , . . . , , , , . ,. , . . , . , . , .. , , -. , , .-. , - . . , . - . ,. , -.- . , , -. , . . , . .. . - , - , , - . , .. -, . ,. , , - - .

Citation Information

Patent Citations

  • Variable speed hydraulic pump

    US20030206805A1

  • High pressure reciprocating pump and control of the same

    US20040151594A1

  • System and method for operation of a pump

    US20080131290A1

  • Method and system for high viscosity pump

    US20140231318A1

  • Brushless DC Motor Control and Methods of Operating a Fuel Pump

    US20160369794A1