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Patent Searching and Data


Title:
SPEED CONTROLLER
Document Type and Number:
Japanese Patent JP2018189155
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a speed controller which is applicable to a cylinder of a short stroke by controlling an operation speed in one process of an external cylinder step by step and eliminating a delay time of flow rate control in simple configuration.SOLUTION: A speed controller 1 comprises a first channel 15 and a second channel 16 which circulate a pressure fluid by communicating a first port 12 and a second port 14. In the first channel 15, a first valve 27 is disposed and in the second channel 16, a second valve 28 is disposed. A third channel 22 and a fourth channel 26 are further included. In the third channel 22, a third valve 46 is disposed. The third valve allows only the circulation, in the third channel, from the first port 12 to a portion at the side of a piston shaft 34 for a piston 30 in a cylinder chamber 20, closes the first channel 15 and the fourth channel 26 by moving a third valve element 46a in such a direction that the third channel 22 is opened, and opens the first channel 15 and the fourth channel 26 by moving in such a direction that the third channel 22 is closed.SELECTED DRAWING: Figure 1

Inventors:
濱 富夫
西牧 裕
Application Number:
JP2017091811A
Publication Date:
November 29, 2018
Filing Date:
May 02, 2017
Export Citation:
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Assignee:
有限会社浜インターナショナル
International Classes:
F15B11/00; F15B11/04
Domestic Patent References:
JPH08189503A1996-07-23
Foreign References:
WO2016017377A12016-02-04
Attorney, Agent or Firm:
特許業務法人綿貫国際特許・商標事務所