JPS5520970A - Stroke variable cylinder - Google Patents

Stroke variable cylinder

Info

Publication number
JPS5520970A
JPS5520970A JP9498578A JP9498578A JPS5520970A JP S5520970 A JPS5520970 A JP S5520970A JP 9498578 A JP9498578 A JP 9498578A JP 9498578 A JP9498578 A JP 9498578A JP S5520970 A JPS5520970 A JP S5520970A
Authority
JP
Japan
Prior art keywords
rod
piston
spool
port
oil
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
JP9498578A
Other languages
Japanese (ja)
Other versions
JPS5653646B2 (en
Inventor
Akira Okano
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.)
Tsuda Industries Co Ltd
Original Assignee
Tsuda Industries 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 Tsuda Industries Co Ltd filed Critical Tsuda Industries Co Ltd
Priority to JP9498578A priority Critical patent/JPS5520970A/en
Publication of JPS5520970A publication Critical patent/JPS5520970A/en
Publication of JPS5653646B2 publication Critical patent/JPS5653646B2/ja
Granted legal-status Critical Current

Links

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  • Actuator (AREA)

Abstract

PURPOSE: To simplify the adjustment of the piston stroke by arranging a valve sleeve in such a manner as to be free to be positioned with respect to the control rod with a spool interlocking with the forward and backward movement of the rod inserted into the sleeve.
CONSTITUTION: When working oil is introduced into a hydraulic chamber 5 from a hydraulic connection port 6, a piston rod 10 advances toward a rod cover 3. In responce, a rotary rod rotates and in linkage with a control rod 15 spirals back causing a spool 31 to retract against the force of a spring 32. Therefore, oil in a hydraulic connection port 22 up to a fixed advance position of the piston rod because a spool land 28 does not coffer a port 25. But, when the spool land 28 coffers the port 25, the oil in the hydraulic chamber is closed. Thus, the piston advace no further thereby restricting the forward stroke of the piston rod.
COPYRIGHT: (C)1980,JPO&Japio
JP9498578A 1978-08-01 1978-08-01 Stroke variable cylinder Granted JPS5520970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9498578A JPS5520970A (en) 1978-08-01 1978-08-01 Stroke variable cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9498578A JPS5520970A (en) 1978-08-01 1978-08-01 Stroke variable cylinder

Publications (2)

Publication Number Publication Date
JPS5520970A true JPS5520970A (en) 1980-02-14
JPS5653646B2 JPS5653646B2 (en) 1981-12-21

Family

ID=14125182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9498578A Granted JPS5520970A (en) 1978-08-01 1978-08-01 Stroke variable cylinder

Country Status (1)

Country Link
JP (1) JPS5520970A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509408A (en) * 1982-04-20 1985-04-09 Kowa Shoji, Ltd. Fluid pressure actuator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4864386A (en) * 1971-12-09 1973-09-06
JPS4994089U (en) * 1972-11-09 1974-08-14
JPS5367074A (en) * 1976-11-29 1978-06-15 Toyo Kohan Co Ltd Air cylinder with brake

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4864386A (en) * 1971-12-09 1973-09-06
JPS4994089U (en) * 1972-11-09 1974-08-14
JPS5367074A (en) * 1976-11-29 1978-06-15 Toyo Kohan Co Ltd Air cylinder with brake

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509408A (en) * 1982-04-20 1985-04-09 Kowa Shoji, Ltd. Fluid pressure actuator

Also Published As

Publication number Publication date
JPS5653646B2 (en) 1981-12-21

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