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JPS55145805A - Hydraulic cylinder - Google Patents

Hydraulic cylinder

Info

Publication number
JPS55145805A
JPS55145805A JP5296379A JP5296379A JPS55145805A JP S55145805 A JPS55145805 A JP S55145805A JP 5296379 A JP5296379 A JP 5296379A JP 5296379 A JP5296379 A JP 5296379A JP S55145805 A JPS55145805 A JP S55145805A
Authority
JP
Japan
Prior art keywords
cylinder
valve
cylinder chamber
pressure
rise
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
JP5296379A
Other languages
Japanese (ja)
Other versions
JPS5911764B2 (en
Inventor
Tateo Kobayashi
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.)
Howa Machinery Ltd
Original Assignee
Howa Machinery 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 Howa Machinery Ltd filed Critical Howa Machinery Ltd
Priority to JP54052963A priority Critical patent/JPS5911764B2/en
Publication of JPS55145805A publication Critical patent/JPS55145805A/en
Publication of JPS5911764B2 publication Critical patent/JPS5911764B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Safety Valves (AREA)

Abstract

PURPOSE: To prevent damage to a cylinder and so on by incorporating in a cylinder body a check valve which opens by increase of pressure of liquid enclosed in a cylinder chamber.
CONSTITUTION: A cylinder body 1 has check valves 33, 34 incorporated therein which have leg pieces 61, 62, respectively, that engage, when valve bodies 35, 36 each urged in a direction by a relief spring 42 and valve members 51, 52 slidably fitted in the valve bodies 35, 36, respectively, are operated against the relief springs 42, with the valve members 51, 52 to establish respective flow passages. Thus, if the temperature of oil in a cylinder chamber 9a should rise, causing pressure within the cylinder chamber 9a to extraordinarily rise, the valve body 36 is slid against the relief spring 42 whereupon the valve body 52 is engaged with the leg piece 62 thereby to open the pertaining flow passage. Consequently, pressure within the cylinder chamber 9a is lowered, thus preventing damage to and deformation of the cylinder 1 and so on.
COPYRIGHT: (C)1980,JPO&Japio
JP54052963A 1979-04-27 1979-04-27 fluid pressure cylinder Expired JPS5911764B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54052963A JPS5911764B2 (en) 1979-04-27 1979-04-27 fluid pressure cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54052963A JPS5911764B2 (en) 1979-04-27 1979-04-27 fluid pressure cylinder

Publications (2)

Publication Number Publication Date
JPS55145805A true JPS55145805A (en) 1980-11-13
JPS5911764B2 JPS5911764B2 (en) 1984-03-17

Family

ID=12929533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54052963A Expired JPS5911764B2 (en) 1979-04-27 1979-04-27 fluid pressure cylinder

Country Status (1)

Country Link
JP (1) JPS5911764B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS456994Y1 (en) * 1965-10-13 1970-04-06
JPS4825714A (en) * 1971-08-02 1973-04-04

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS456994Y1 (en) * 1965-10-13 1970-04-06
JPS4825714A (en) * 1971-08-02 1973-04-04

Also Published As

Publication number Publication date
JPS5911764B2 (en) 1984-03-17

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