JPS5783759A - Fluid pressure control device - Google Patents

Fluid pressure control device

Info

Publication number
JPS5783759A
JPS5783759A JP15856380A JP15856380A JPS5783759A JP S5783759 A JPS5783759 A JP S5783759A JP 15856380 A JP15856380 A JP 15856380A JP 15856380 A JP15856380 A JP 15856380A JP S5783759 A JPS5783759 A JP S5783759A
Authority
JP
Japan
Prior art keywords
valve seat
closing
diameter portion
large diameter
piston
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
JP15856380A
Other languages
Japanese (ja)
Inventor
Tomohiro Fujita
Toshifumi Maehara
Kinji Ogino
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.)
Akebono Brake Industry Co Ltd
Original Assignee
Akebono Brake Industry Co 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 Akebono Brake Industry Co Ltd filed Critical Akebono Brake Industry Co Ltd
Priority to JP15856380A priority Critical patent/JPS5783759A/en
Publication of JPS5783759A publication Critical patent/JPS5783759A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lift Valve (AREA)

Abstract

PURPOSE: To improve the opening/closing of a fluid passage by providing a large diameter portion of predetermined width on a piston head guide circumferential surface preventing direct contact of the piston head with a valve seat thus minimizing the flow constriction effect.
CONSTITUTION: A gap is given between a valve seat 103 a valve body 107a of a large diameter portion of a piston which comes in contact with the valve seat in proximity of the end at the side where an annular guide surface 104a of a back-up 104 comes in contact with the valve seat 103. Thus the flow passage area which changes at the time of the flow passage opening/closing is determined by (circumferential length of the large diameter portion of the piston) X (gap length between the valve seat and the valve body) thereby minimizing the constriction effect of the fluid passage for improved opening/closing of the passage.
COPYRIGHT: (C)1982,JPO&Japio
JP15856380A 1980-11-11 1980-11-11 Fluid pressure control device Pending JPS5783759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15856380A JPS5783759A (en) 1980-11-11 1980-11-11 Fluid pressure control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15856380A JPS5783759A (en) 1980-11-11 1980-11-11 Fluid pressure control device

Publications (1)

Publication Number Publication Date
JPS5783759A true JPS5783759A (en) 1982-05-25

Family

ID=15674428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15856380A Pending JPS5783759A (en) 1980-11-11 1980-11-11 Fluid pressure control device

Country Status (1)

Country Link
JP (1) JPS5783759A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248416B1 (en) * 1970-09-07 1977-12-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248416B1 (en) * 1970-09-07 1977-12-09

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