Notice n° EP2801736
Titre
TENDEUR HYDRAULIQUE AUTOMATIQUE
N° et date de publication de la demande
EP2801736 - 12/11/2014
Type de la demande
A1
N° et date de dépôt
EP12864470.5 - 21/12/2012
N° et date de priorité
JP2012001256 - 06/01/2012 ; JP2012012895 - 25/01/2012
Classification CIB
Classification CPC
F16H 7/1236 ; F16H2007/0814 ; F16H2007/0806 ; F16H2007/0859 ; F16H2007/0893 ; F16H 7/1236 ; F16H2007/0806 ; F16H2007/0814 ; F16H2007/0859 ; F16H2007/0893 ; F16H 7/1236 ; F16H2007/0806 ; F16H2007/0814 ; F16H2007/0859 ; F16H2007/0893 ; F16H 7/08
Famille de brevets
WO2013103098A1 ; US2014378253A1 ; CN104081091A ; EP2801736A1
Abrégé
A hydraulic auto-tensioner is proposed which is free of deterioration in hydraulic damping function and which can sufficiently quickly generate hydraulic damping force. The auto-tensioner includes a sleeve (4) having its bottom end press-fitted in a sleeve fitting hole (3) formed in the bottom surface of a cylinder (1), a rod (5) having its bottom end slidably fitted in the sleeve (4), and a return spring (8) mounted between a spring support (7) provided at the upper portion of the rod (5) and the bottom surface of the cylinder (1). A passage (14) is formed between fitting surfaces of the sleeve fitting hole (3) and the sleeve (4) through which a pressure chamber (6) communicates with a reservoir chamber (13). A check valve (15) is mounted in the passage (14). The rod (5) is formed with a valve fitting hole (16) and a communication passage (17) through which the valve fitting hole (16) communicates with the reservoir chamber (13). A relief valve (20) is mounted in the valve fitting hole (16). An orifice (27) is formed between a valve hole (22) formed in a valve seat (21) of the relief valve (20) and a valve body (23) to prevent a sharp drop in pressure in the pressure chamber (6).
INTERVENANTS
Déposant
NTN CORPORATION - 3-17, KYOMACHIBORI 1-CHOME NISHI-KU OSAKA-SHI, OSAKA 550-0003 - JP
Titulaire
NTN CORPORATION - 3-17, KYOMACHIBORI 1-CHOME NISHI-KU OSAKA-SHI, OSAKA 550-0003 - JP
Inventeur
TANAKA TADAHISA IWATA-SHI SHIZUOKA 438-0037 - JP
KITANO SATOSHI IWATA-SHI SHIZUOKA 438-0037 - JP
TAKANO TAKEHIRO IWATA-SHI SHIZUOKA 438-0037 - JP
Mandataire
WOLFGANG NEUBECK - GRUNECKER - 260 BOULEVARD SAINT GERMAIN - 75007 PARIS - FR - N° Siren : 518993001
STATUT EN FRANCE : Déchu
Délivrance
20/09/2017
Date de constatation de déchéance
-
05/09/2020 (BOPI 2020-42)
Dernière annuité payée
27/11/2018
Quantième- N° de l'annuité payée
7
Date de paiement de la prochaine annuité
31/12/2019