Précédent
Suivant
Brevet : EP3196367 - CIRCUIT HYDRAULIQUE POUR ENGIN DE CHANTIER
Titre
CIRCUIT HYDRAULIQUE POUR ENGIN DE CHANTIER
N° et date de publication de la demande
EP3196367 - 26/07/2017
Type de la demande
A1
N° et date de dépôt
EP14902155.2 - 19/09/2014
N° et date de priorité
PCT/KR2014008745 - 19/09/2014
Classification CPC
E02F 9/2282 ; E02F 9/2296 ; E02F 9/2228 ; E02F 9/2217 ; E02F 3/435 ; E02F 9/2235 ; E02F 9/20 ; E02F 9/22 ; E02F 9/2217 ; E02F 9/2235 ; E02F 9/2267 ; E02F 9/2271 ; E02F 9/2282 ; E02F 9/2285 ; E02F 9/2292 ; E02F 9/2296 ; F15B 11/10 ; F15B 13/027 ; F15B 21/14 ; F15B2211/20546 ; F15B2211/41554 ; F15B2211/428 ; F15B2211/6052 ; F15B2211/6313 ; F15B2211/6346 ; F15B2211/6355 ; F15B2211/7053
Famille de brevets
EP3196367A1 ; US2017276151A1 ; CN106715801A ; WO2016043365A1
Abrégé
Disclosed is a hydraulic circuit for construction equipment for controlling to selectively supply a hydraulic oil from a hydraulic pump to a hydraulic cylinder for driving a boom. The hydraulic circuit for construction equipment, according to the present invention, comprises: a hydraulic cylinder driven by a hydraulic oil of a hydraulic pump; a direction control valve installed on the oil passage between the hydraulic pump and the hydraulic cylinder; an operating device installed on the oil passage between a pilot pump and the direction control valve; a center by-pass switching valve installed at the most downstream side of a center by-pass passage of the hydraulic pump; a pressure detection sensor that detects the pressure of a hydraulic oil at the large chamber side of the hydraulic cylinder; a jack-up switching valve installed on the oil passage between the operating device and the center by-pass switching valve; and a flow control valve installed in the spool of the direction control valve.
INTERVENANTS
Déposant
VOLVO CONSTRUCTION EQUIPMENT AB 631 85 ESKILSTUNA - SE
Titulaire
Volvo Construction Equipment AB 631 85 Eskilstuna - SE
Inventeur
JOUNG, Hea-Gyoon Busan 617-832 - KR
Mandataire
Eisenführ Speiser - Patentanwälte Rechtsanwälte PartGmbB Johannes-Brahms-Platz 1 20355 Hamburg - DE
STATUT EN FRANCE
Délivrance
13/04/2022
Dernière annuité payée
26/09/2023
Quantième- N° de l'annuité payée
10
Date de paiement de la prochaine annuité
30/09/2024
