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1. (WO2018044871) POWER LIFT
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/044871 International Application No.: PCT/US2017/049090
Publication Date: 08.03.2018 International Filing Date: 29.08.2017
IPC:
E02F 3/43 (2006.01) ,E02F 9/20 (2006.01) ,B66F 7/22 (2006.01) ,B66F 9/04 (2006.01) ,E21B 7/00 (2006.01)
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
F
DREDGING; SOIL-SHIFTING
3
Dredgers; Soil-shifting machines
04
mechanically-driven
28
with digging tools mounted on a dipper- or bucket-arm, e.g. dippers, buckets
36
Component parts
42
Drives for dippers, buckets, dipper-arms or bucket-arms
43
Control of dipper or bucket position; Control of sequence of drive operations
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
F
DREDGING; SOIL-SHIFTING
9
Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
20
Drives; Control devices
B PERFORMING OPERATIONS; TRANSPORTING
66
HOISTING; LIFTING; HAULING
F
HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
7
Lifting frames, e.g. for lifting vehicles; Platform lifts
22
with tiltable platforms
B PERFORMING OPERATIONS; TRANSPORTING
66
HOISTING; LIFTING; HAULING
F
HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
9
Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
02
Stationary loaders or unloaders, e.g. for sacks
04
hydraulically actuated or controlled
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
7
Special methods or apparatus for drilling
Applicants:
CLARK EQUIPMENT COMPANY [US/US]; 250 East Beaton Drive West Fargo, North Dakota 58078-6000, US
Inventors:
GALES, Nicolas; FR
Agent:
VELDHUIS-KROEZE, John; US
MAGEE, David, D.; US
WESTMAN, Nickolas, E.; US
BRUSH, David, D.; US
KAUL, Brian, D.; US
Priority Data:
62/381,25330.08.2016US
Title (EN) POWER LIFT
(FR) DISPOSITIF DE LEVAGE DE PUISSANCE
Abstract:
(EN) Power machines (300) and control systems (360, 400) used thereon include a lift cylinder (333), a tilt cylinder (335), and a slave cylinder (337) mechanically connected to assist the lift cylinder with raising a boom (330). With a lift control valve (405) controlled to cause extension of the lift cylinder to raise the boom, pressure from a hydraulic source (362) is provided to the slave cylinder to aid in raising the boom. Resulting increased pressure on a side of the slave cylinder opens load holding valves (370, 460), allowing hydraulic pressure from the tilt cylinder to be communicated to the slave cylinder such that tilt cylinder pressure due to a heavy load on an implement aids in raising the boom.
(FR) Le dispositif selon l'invention comprend des machines électriques (300) et des systèmes de commande (360, 400) utilisés sur celles-ci, comprenant un vérin de levage (333), un vérin d'inclinaison (335), et un cylindre asservi (337) mécaniquement relié pour aider le vérin de levage à soulever une flèche (330). Un robinet de commande de levage (405) commandé pour provoquer l'extension du vérin de levage afin de soulever la flèche, permet de fournit une pression provenant d'une source hydraulique (362) au cylindre asservi pour aider à soulever la flèche. La pression accrue résultante sur un côté du cylindre asservi ouvre des robinets de maintien de charge (370, 460), permettant de transmettre une pression hydraulique provenant du vérin d'inclinaison au cylindre asservi de telle sorte que la pression du vérin d'inclinaison due à une charge lourde sur un instrument aide à soulever la flèche.
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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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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: English (EN)
Filing Language: English (EN)