JPS5597611A - Automatic pressure control unit - Google Patents

Automatic pressure control unit

Info

Publication number
JPS5597611A
JPS5597611A JP2619179A JP2619179A JPS5597611A JP S5597611 A JPS5597611 A JP S5597611A JP 2619179 A JP2619179 A JP 2619179A JP 2619179 A JP2619179 A JP 2619179A JP S5597611 A JPS5597611 A JP S5597611A
Authority
JP
Japan
Prior art keywords
needle
light
plate
pressure
control
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.)
Granted
Application number
JP2619179A
Other languages
Japanese (ja)
Other versions
JPS5857767B2 (en
Inventor
Masaaki Suzuki
Tsunamasa Inao
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.)
The University of Tokyo
Original Assignee
The University of Tokyo
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 The University of Tokyo filed Critical The University of Tokyo
Priority to JP54026191A priority Critical patent/JPS5857767B2/en
Publication of JPS5597611A publication Critical patent/JPS5597611A/en
Publication of JPS5857767B2 publication Critical patent/JPS5857767B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • External Artificial Organs (AREA)
  • Control Of Fluid Pressure (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE: To ensure the control for the rotation of the blood pump for the artificial kidney and thus obtaining the blood flow of the fixed pressure, by using the conversion system using the light or magnetic field to the feedback system of the pressure.
CONSTITUTION: Light reception panel 7 possessing fan-shaped photoconductive element 9 connected to setting needle 2 is provided into Bourdon tube type pressure gauge containing index needle 1 and needle 2, along with electric fluorescent plate 4 and light masking plate 6 which turns with needle 1. When fluid pressure increases and needle 1 comes close to needle 2, the light is cut off to element 9 via plate 6. Thus the electric resistance of element 9 increases. This resistance variation output gives the control to the blood pump via the control circuit which is not shown in the diagram. Plate 6 contains bias part 15 having the triangular notched groove and is formed to secure central angle β which is larger than central angle α of element 9 in order to cover element 9 little by little. As a result, the proportional control can be improved between the pressure variation and the motor driving.
COPYRIGHT: (C)1980,JPO&Japio
JP54026191A 1979-03-08 1979-03-08 Automatic pressure control device Expired JPS5857767B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54026191A JPS5857767B2 (en) 1979-03-08 1979-03-08 Automatic pressure control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54026191A JPS5857767B2 (en) 1979-03-08 1979-03-08 Automatic pressure control device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3168473A Division JPS5527371B2 (en) 1973-03-19 1973-03-19

Publications (2)

Publication Number Publication Date
JPS5597611A true JPS5597611A (en) 1980-07-25
JPS5857767B2 JPS5857767B2 (en) 1983-12-21

Family

ID=12186596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54026191A Expired JPS5857767B2 (en) 1979-03-08 1979-03-08 Automatic pressure control device

Country Status (1)

Country Link
JP (1) JPS5857767B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6431411U (en) * 1987-08-13 1989-02-27

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4659300B2 (en) 2000-09-13 2011-03-30 浜松ホトニクス株式会社 Laser processing method and semiconductor chip manufacturing method
TWI326626B (en) 2002-03-12 2010-07-01 Hamamatsu Photonics Kk Laser processing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4011049Y1 (en) * 1964-02-04 1965-04-17
JPS44314Y1 (en) * 1966-02-04 1969-01-08

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4011049Y1 (en) * 1964-02-04 1965-04-17
JPS44314Y1 (en) * 1966-02-04 1969-01-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6431411U (en) * 1987-08-13 1989-02-27

Also Published As

Publication number Publication date
JPS5857767B2 (en) 1983-12-21

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