JPS5783705A - Cushion device for cylinder - Google Patents

Cushion device for cylinder

Info

Publication number
JPS5783705A
JPS5783705A JP16000180A JP16000180A JPS5783705A JP S5783705 A JPS5783705 A JP S5783705A JP 16000180 A JP16000180 A JP 16000180A JP 16000180 A JP16000180 A JP 16000180A JP S5783705 A JPS5783705 A JP S5783705A
Authority
JP
Japan
Prior art keywords
cushion
piston
fitted
projection
circular
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
JP16000180A
Other languages
Japanese (ja)
Inventor
Yoshio Tanito
Morio Tamura
Hisanori Hashimoto
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 Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP16000180A priority Critical patent/JPS5783705A/en
Publication of JPS5783705A publication Critical patent/JPS5783705A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To improve the cushion effect by providing the cushion members having a circular projection at one ends of a cylinder cover and a piston respectively such that they will be fitted each other thereby preventing the collision of the piston against the cylinder cover.
CONSTITUTION: A cushion plunger 23 having a circular projection 25 is formed on a piston 21 while a cushion member 27 having a circular groove 28 to be fitted with said projection 25 with the gap S1 is formed on the head cover 2 and a circular projection 29 to be fitted with a circular groove 26 with the gap S2 is further formed. When the piston will move to the right the cushion plunger 23 is fitted with a cushion member 27 to reduce the flow path area thus to produce the high pressure in the chamber A and to provide the resistance against the piston 21. Consequently the cushion effect can be improved when compared with the conventional one by the resistance of the pressurized oil flowing in the gaps S1, S2.
COPYRIGHT: (C)1982,JPO&Japio
JP16000180A 1980-11-13 1980-11-13 Cushion device for cylinder Pending JPS5783705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16000180A JPS5783705A (en) 1980-11-13 1980-11-13 Cushion device for cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16000180A JPS5783705A (en) 1980-11-13 1980-11-13 Cushion device for cylinder

Publications (1)

Publication Number Publication Date
JPS5783705A true JPS5783705A (en) 1982-05-25

Family

ID=15705824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16000180A Pending JPS5783705A (en) 1980-11-13 1980-11-13 Cushion device for cylinder

Country Status (1)

Country Link
JP (1) JPS5783705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807514A (en) * 1987-04-13 1989-02-28 Gratzmueller C A Differential hydraulic jack with damping system for the control of electric circuit-breakers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807514A (en) * 1987-04-13 1989-02-28 Gratzmueller C A Differential hydraulic jack with damping system for the control of electric circuit-breakers

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