SPEED CONTROLLER - YG HAMA INTERNATIONAL

Title:

SPEED CONTROLLER

Document Type and Number:

WIPO Patent Application WO/2018/203460

Kind Code:

A1

Abstract:

In order to form a speed controller which is applicable to a short-stroke cylinder with a simple configuration, a speed controller (1) is provided with: a first channel (15) and a second channel (16) which allow flow passage of a pressure fluid by connecting a first port (12) and a second port (14), wherein a first valve (27) is provided to the first channel (15), and a second valve (28) is provided to the second channel (16). The speed controller (1) is further provided with: a third channel (22) and a fourth channel (26), wherein the third channel (22) is equipped with a third valve (46) that allows, in the third channel, only a flow passage from the first port (12) toward a portion on the piston shaft (34) side with respect to a piston (30) in a cylinder chamber (20), and that closes the first channel (15) and the fourth channel (26) as a result of a third valve body (46a) moving in a direction for opening the third channel (22) and opens the first channel (15) and the fourth channel (26) as a result of the third valve body (46a) moving in a direction for closing the third channel (22).

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Inventors:

HAMA TOMIO (JP)
NISHIMAKI YUTAKA (JP)

Application Number:

PCT/JP2018/014843

Publication Date:

November 08, 2018

Filing Date:

April 09, 2018

Export Citation:

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Assignee:

YG HAMA INTERNATIONAL (JP)

International Classes:

F15B11/06; F15B11/00; F15B11/04

Domestic Patent References:

WO2016017377A1

2016-02-04

Foreign References:

JPH08189503A	1996-07-23
JP2016161055A	2016-09-05

Other References: