JPS5527523A - Piston - Google Patents

Piston

Info

Publication number
JPS5527523A
JPS5527523A JP9902778A JP9902778A JPS5527523A JP S5527523 A JPS5527523 A JP S5527523A JP 9902778 A JP9902778 A JP 9902778A JP 9902778 A JP9902778 A JP 9902778A JP S5527523 A JPS5527523 A JP S5527523A
Authority
JP
Japan
Prior art keywords
piston
sleeve
cylinder
plate
piston ring
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
JP9902778A
Other languages
Japanese (ja)
Inventor
Mutsuo Saito
Teruo Ota
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 JP9902778A priority Critical patent/JPS5527523A/en
Publication of JPS5527523A publication Critical patent/JPS5527523A/en
Pending legal-status Critical Current

Links

Landscapes

  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE: To improve sealability by maintaining the pressure between the piston and the cylinder at a constant value regardless of temperature change in a mechanism wherein a sleeve and a piston ring are installed at the tip of the piston and the sleeve is kept pressured against the inside wall of the cylinder by gas.
CONSTITUTION: A top-plate 3 is attached at the top of the piston 2, and a piston ring 5 is inserted into a groove being formed in the vicinity of the top-plate 3. A sleeve 6 made of synthetic resin without cut section is attached on the surface of the piston 2 and the piston ring 5, and its one end A is bulged inwardly to maintain sealability between the piston 2 and the cylinder. A clearance is provided between the inside of the sleeve 6 and the top-plate 3 of the piston 2, wherein the gas pressure leaking out from the piston ring 5 is actuated on the sleeve 6, which pressures the sleeve 6 against the inner wall of the cylinder 1. By this structure, sealability between the sleeve 6 and the cylinder 1 is maintained excellently even under low temperature.
COPYRIGHT: (C)1980,JPO&Japio
JP9902778A 1978-08-16 1978-08-16 Piston Pending JPS5527523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9902778A JPS5527523A (en) 1978-08-16 1978-08-16 Piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9902778A JPS5527523A (en) 1978-08-16 1978-08-16 Piston

Publications (1)

Publication Number Publication Date
JPS5527523A true JPS5527523A (en) 1980-02-27

Family

ID=14235799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9902778A Pending JPS5527523A (en) 1978-08-16 1978-08-16 Piston

Country Status (1)

Country Link
JP (1) JPS5527523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879408A (en) * 1981-11-06 1983-05-13 株式会社日立製作所 Enclosed switchboard

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879408A (en) * 1981-11-06 1983-05-13 株式会社日立製作所 Enclosed switchboard

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