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1. (WO2018003668) TWO-PISTON HYDRAULIC STRIKING DEVICE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2018/003668    International Application No.:    PCT/JP2017/023098
Publication Date: 04.01.2018 International Filing Date: 22.06.2017
IPC:
B25D 9/26 (2006.01)
Applicants: FURUKAWA ROCK DRILL CO.,LTD. [JP/JP]; 5-3, Nihonbashi 1-chome, Chuo-ku, Tokyo 1030027 (JP)
Inventors: KOIZUMI Masahiro; (JP).
MATSUDA Toshio; (JP)
Agent: MORI Tetsuya; (JP).
TANAKA Hidetetsu; (JP).
HIROSE Hajime; (JP)
Priority Data:
2016-127933 28.06.2016 JP
Title (EN) TWO-PISTON HYDRAULIC STRIKING DEVICE
(FR) DISPOSITIF DE FRAPPE HYDRAULIQUE À DEUX PISTONS
(JA) 2ピストン型油圧打撃装置
Abstract: front page image
(EN)Provided is a two-piston hydraulic striking device that has stable operativity. This two-piston hydraulic striking device (100) comprises two striking mechanisms (200, 300) to strike one transfer member (105). Each striking mechanism (200, 300) is set so that the pressure receiving area ratio in front of and behind a piston (210, 310) has the same cycle time for the two striking mechanisms (200, 300).
(FR)L'invention porte sur un dispositif de frappe hydraulique à deux pistons qui a une activité opérationnelle stable. Ce dispositif de frappe hydraulique à deux pistons (100) comprend deux mécanismes de frappe (200, 300) pour frapper un élément de transfert (105). Chaque mécanisme de frappe (200, 300) est réglé de telle sorte que le rapport de zone de réception de pression devant et derrière un piston (210, 310) a le même temps de cycle pour les deux mécanismes de frappe (200, 300).
(JA)安定した作動性を有する2ピストン型油圧打撃装置を提供する。この2ピストン型油圧打撃装置(100)は、1つの伝達部材(105)を打撃する2つの打撃機構(200、300)を備える。各打撃機構(200、300)は、ピストン(210、310)の前後の受圧面積比が、2つの打撃機構(200、300)のサイクルタイムが同じになるように設定されている。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)