JPS5649405A - Multistage cylinder - Google Patents

Multistage cylinder

Info

Publication number
JPS5649405A
JPS5649405A JP12513779A JP12513779A JPS5649405A JP S5649405 A JPS5649405 A JP S5649405A JP 12513779 A JP12513779 A JP 12513779A JP 12513779 A JP12513779 A JP 12513779A JP S5649405 A JPS5649405 A JP S5649405A
Authority
JP
Japan
Prior art keywords
cylinder
feed
oil
bypass path
valve body
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
JP12513779A
Other languages
Japanese (ja)
Inventor
Yuji Sakurai
Noboru Okada
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.)
Shinmaywa Industries Ltd
Original Assignee
Shin Meiva Industry 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 Shin Meiva Industry Ltd filed Critical Shin Meiva Industry Ltd
Priority to JP12513779A priority Critical patent/JPS5649405A/en
Publication of JPS5649405A publication Critical patent/JPS5649405A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To simplify the construction of a multistage cylinder which has such a function that a feed oil is bypassed when it is stretched at full length, by providing a feed or discharge oil path and a bypass path at the end of the innermost cylinder, and a valve body for opening or closing the bypass inside the cylinder.
CONSTITUTION: With a multistage cylinder contracted most, a valve body 14 is pushed onto a valve seat 15 by a spring 22 to close bypass path 11, and a connecting member 24 is inserted into a sleeve 27 so that a large diameter part 26 is separated from a small diameter part 29. As an oil is supplied under a pressure from a feed or discharge oil path 10, an external cylinder 2 and the first to thire cylinders 3W5 projected in sequence. When the fourth cylinder 6 beings to project from the cylinder 5 after the third cylinder 5 has been completely projected, the connecting member 24 appears out of the sleeve 27. Finally, when the cylinder 6 nearly completes its projection, the valve body 14 is retracted towards a basic end by the spring 22 to open the bypass path 11 so that a feed oil is bypassed through the bypass path 11.
COPYRIGHT: (C)1981,JPO&Japio
JP12513779A 1979-09-27 1979-09-27 Multistage cylinder Pending JPS5649405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12513779A JPS5649405A (en) 1979-09-27 1979-09-27 Multistage cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12513779A JPS5649405A (en) 1979-09-27 1979-09-27 Multistage cylinder

Publications (1)

Publication Number Publication Date
JPS5649405A true JPS5649405A (en) 1981-05-06

Family

ID=14902769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12513779A Pending JPS5649405A (en) 1979-09-27 1979-09-27 Multistage cylinder

Country Status (1)

Country Link
JP (1) JPS5649405A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5849531A (en) * 1981-09-19 1983-03-23 Kyokuto Kaihatsu Kogyo Co Ltd Cylinder supporting device for dumptruck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5849531A (en) * 1981-09-19 1983-03-23 Kyokuto Kaihatsu Kogyo Co Ltd Cylinder supporting device for dumptruck

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