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1. (WO2013112423) HYDRAULIC PUMP CONTROL SYSTEM FOR LIFT GATE APPLICATIONS
PCT Biblio. Data
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Pub. No.:
WO/2013/112423
International Application No.:
PCT/US2013/022445
Publication Date:
01.08.2013
International Filing Date:
22.01.2013
IPC:
B60P 1/44
(2006.01)
B
PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
P
VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
1
Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
44
having a loading platform thereon raising the load to the level of the load supporting or containing element
Applicants:
MAXON INDUSTRIES
[US/US]; 11921 Slauson Avenue Santa Fe Springs, CA 90670 (US)
Inventors:
BARK, Paul
; (US).
ABLABUTYAN, Karapet
; (US).
VILLAESCUSA, Luis, Arturo
; (MX)
Agent:
TUTUNJIAN, John G.
; TUTUNJIAN & BITETTO, P.C. 425 Broadhollow Road, Suite 302 Melville, NY 11747 (US)
Priority Data:
13/356,115
23.01.2012
US
Title
(EN)
HYDRAULIC PUMP CONTROL SYSTEM FOR LIFT GATE APPLICATIONS
(FR)
SYSTÈME DE COMMANDE DE POMPE HYDRAULIQUE POUR APPLICATIONS DE GRILLE DE LEVAGE
Abstract:
(EN)
The hydraulic pump control system enables the synchronization of two independently mounted hydraulic lifting cylinders in a lift gate environment. A directional valve is added to the hydraulic line path between the lift cylinders and their respective pumps and reservoir tank. By connecting two pumps to one motor, the synchronization of the pumps is enabled for power up operations of the lift, and through the additional application of the directional valves, the oil flow rate to the lift cylinders (e.g., during a power down operation) can be maintained as hydraulically identical, thus synchronizing the movement of each lift cylinder with respect to the other, even in the presence other outside conditions that would could otherwise cause a de-synchronization of the lift cylinders.
(FR)
Le système de commande de pompe hydraulique permet la synchronisation de deux cylindres de levage hydraulique montés indépendamment dans un environnement de grille de levage. Une soupape directionnelle est ajoutée à la ligne hydraulique de trajet entre les cylindres d'élévation et leurs pompe et cuve de réservoir respective. En connectant deux pompes à un moteur, la synchronisation des pompes est activée pour des opérations de mise sous tension de l'élévateur, et à travers l'application supplémentaire des soupapes directionnelles, le débit d'huile sur les cylindres de levage (par exemple, pendant une opération de mise hors tension) peut être maintenu de la même manière hydraulique, ce qui permet de synchroniser le mouvement de chaque cylindre de levage par rapport à l'autre, même en présence d'autres conditions extérieures qui pourraient autrement entraîner une désynchronisation des cylindres de levage.
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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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, 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, ML, MR, NE, SN, TD, TG).
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)