JPS53122125A - Pumps - Google Patents

Pumps

Info

Publication number
JPS53122125A
JPS53122125A JP3536677A JP3536677A JPS53122125A JP S53122125 A JPS53122125 A JP S53122125A JP 3536677 A JP3536677 A JP 3536677A JP 3536677 A JP3536677 A JP 3536677A JP S53122125 A JPS53122125 A JP S53122125A
Authority
JP
Japan
Prior art keywords
pump
resistance body
pumps
circuit
miniaturize
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3536677A
Other languages
Japanese (ja)
Inventor
Shigetomo Yoshihara
Akira Maejima
Takao Shibata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3536677A priority Critical patent/JPS53122125A/en
Publication of JPS53122125A publication Critical patent/JPS53122125A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To miniaturize a pump by setting up a resistance body in the discharge channel of the pump and opening the pump electrical circuit when the pressure before and behind of this resistance body is equal and closing the circuit when differential pressure occurs.
COPYRIGHT: (C)1978,JPO&Japio
JP3536677A 1977-03-31 1977-03-31 Pumps Pending JPS53122125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3536677A JPS53122125A (en) 1977-03-31 1977-03-31 Pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3536677A JPS53122125A (en) 1977-03-31 1977-03-31 Pumps

Publications (1)

Publication Number Publication Date
JPS53122125A true JPS53122125A (en) 1978-10-25

Family

ID=12439892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3536677A Pending JPS53122125A (en) 1977-03-31 1977-03-31 Pumps

Country Status (1)

Country Link
JP (1) JPS53122125A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142890A (en) * 1985-12-18 1987-06-26 Matsushita Electric Ind Co Ltd Pump device
WO1999040322A1 (en) * 1998-02-09 1999-08-12 Ebara Corporation Fluid machinery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142890A (en) * 1985-12-18 1987-06-26 Matsushita Electric Ind Co Ltd Pump device
WO1999040322A1 (en) * 1998-02-09 1999-08-12 Ebara Corporation Fluid machinery
US6435836B1 (en) 1998-02-09 2002-08-20 Ebara Corporation Fluid machinery

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