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Patent Searching and Data


Title:
HYDRAULIC CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/093538
Kind Code:
A1
Abstract:
When a first control valve 250 and a second control valve 240 are in non-neutral positions, respectively, a fifth fluid passage 450 and a second fluid passage 420 are closed, thereby generating a first pressure within a fifth portion 451 of the fifth fluid passage 450 and a second pressure within a second portion 421 of the second fluid passage 420, so that the first pressure is applied to a first valve 510 through a fourth fluid passage 440 to move the first valve 510 to close the third fluid passage 430 and a second pressure is applied to the confluence valve 225 through a first fluid passage 410 to move the confluence valve 225 to a confluence position. When the confluence valve 225 is in the confluence position, the confluence valve 225 directs working fluid from a first working fluid supply 110 to the second control valve 240.

Inventors:
KIM, Dongwook (225-403, 495 Woni-daero, Seongsan-gu,Changwon-si, Gyeongsangnam-do, 51426, KR)
JEON, Manseuk (105-502, 114 Dongsan-ro, Seongsan-gu,Changwon-si, Gyeongsangnam-do, 51498, KR)
YUN, Seonggeun (201-1401, 104-9 Bangye-ro, Uichang-gu,Changwon-si, Gyeongsangnam-do, 51372, KR)
SON, Youngjin (201-1301, 177 Bansong-ro, Seongsan-gu,Changwon-si, Gyeongsangnam-do, 51425, KR)
Application Number:
KR2017/012626
Publication Date:
May 16, 2019
Filing Date:
November 08, 2017
Export Citation:
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Assignee:
VOLVO CONSTRUCTION EQUIPMENT AB (S Eskilstuna, SE-631 85, SE)
KIM, Dongwook (225-403, 495 Woni-daero, Seongsan-gu,Changwon-si, Gyeongsangnam-do, 51426, KR)
JEON, Manseuk (105-502, 114 Dongsan-ro, Seongsan-gu,Changwon-si, Gyeongsangnam-do, 51498, KR)
YUN, Seonggeun (201-1401, 104-9 Bangye-ro, Uichang-gu,Changwon-si, Gyeongsangnam-do, 51372, KR)
SON, Youngjin (201-1301, 177 Bansong-ro, Seongsan-gu,Changwon-si, Gyeongsangnam-do, 51425, KR)
International Classes:
F15B13/02; F16K11/07
Foreign References:
US20080034748A12008-02-14
EP1306492B12006-06-21
US20080236154A12008-10-02
US20040261405A12004-12-30
US20050204734A12005-09-22
Attorney, Agent or Firm:
KIM, Seon-Min (Akros Patent & Trademark Attorneys, 8F. DongGu Bldg.,15, Teheran-ro 86-gil,,Gangnam-gu, Seoul, 06179, KR)
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