JPS56589A - Rotary type hydraulic pump - Google Patents

Rotary type hydraulic pump

Info

Publication number
JPS56589A
JPS56589A JP7462879A JP7462879A JPS56589A JP S56589 A JPS56589 A JP S56589A JP 7462879 A JP7462879 A JP 7462879A JP 7462879 A JP7462879 A JP 7462879A JP S56589 A JPS56589 A JP S56589A
Authority
JP
Japan
Prior art keywords
porous
cylinder
hydraulic pump
rotary type
type hydraulic
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
JP7462879A
Other languages
Japanese (ja)
Inventor
Michiyoshi Matsuzaki
Original Assignee
Nippon Piston Ring 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 Nippon Piston Ring Co Ltd filed Critical Nippon Piston Ring Co Ltd
Priority to JP7462879A priority Critical patent/JPS56589A/en
Publication of JPS56589A publication Critical patent/JPS56589A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To minimize deterioration of sealing property and strain due to a thermal expansion and thus to improve wear resistance by forming a cylinder inner periphery with a porous material with low thermal conductivity and specific shape.
CONSTITUTION: Inner periphery 11 of a cylinder 1 is formed with a porous material 5. For porous material, those with low thermal conductivity such as iron sintered material, flame coating material, ceramics and cermet are applicable, and the hole content is selected at 4W17vol%. Then, the thickness is selected at 0.05mm or over. Thus a heat resistance is secured for a long period of time, and a strength against strain according to a thermal expansion of a side housing 2 and the cylinder 1 can be improved.
COPYRIGHT: (C)1981,JPO&Japio
JP7462879A 1979-06-15 1979-06-15 Rotary type hydraulic pump Pending JPS56589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7462879A JPS56589A (en) 1979-06-15 1979-06-15 Rotary type hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7462879A JPS56589A (en) 1979-06-15 1979-06-15 Rotary type hydraulic pump

Publications (1)

Publication Number Publication Date
JPS56589A true JPS56589A (en) 1981-01-07

Family

ID=13552641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7462879A Pending JPS56589A (en) 1979-06-15 1979-06-15 Rotary type hydraulic pump

Country Status (1)

Country Link
JP (1) JPS56589A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59224402A (en) * 1983-06-03 1984-12-17 Oval Eng Co Ltd Non-engagement flow meter or prime mover of volume type
JPS6110991U (en) * 1984-06-25 1986-01-22
JPS6180380U (en) * 1984-10-31 1986-05-28
JPS62108592U (en) * 1985-12-26 1987-07-10
JPS62197786U (en) * 1986-06-05 1987-12-16
JP2013241895A (en) * 2012-05-21 2013-12-05 Nabtesco Automotive Corp Vacuum pump
CN108240336A (en) * 2018-02-02 2018-07-03 广东美芝制冷设备有限公司 Compressor and air conditioner

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59224402A (en) * 1983-06-03 1984-12-17 Oval Eng Co Ltd Non-engagement flow meter or prime mover of volume type
JPS6110991U (en) * 1984-06-25 1986-01-22
JPH0232877Y2 (en) * 1984-06-25 1990-09-05
JPS6180380U (en) * 1984-10-31 1986-05-28
JPH0219599Y2 (en) * 1984-10-31 1990-05-30
JPS62108592U (en) * 1985-12-26 1987-07-10
JPS62197786U (en) * 1986-06-05 1987-12-16
JP2013241895A (en) * 2012-05-21 2013-12-05 Nabtesco Automotive Corp Vacuum pump
CN108240336A (en) * 2018-02-02 2018-07-03 广东美芝制冷设备有限公司 Compressor and air conditioner

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