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1. (WO2018222821) PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS
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Pub. No.: WO/2018/222821 International Application No.: PCT/US2018/035314
Publication Date: 06.12.2018 International Filing Date: 31.05.2018
IPC:
B60G 11/00 (2006.01) ,B60G 11/26 (2006.01) ,B60G 13/00 (2006.01) ,B60G 13/14 (2006.01) ,B60G 17/00 (2006.01) ,B60G 17/04 (2006.01) ,B60G 17/08 (2006.01) ,F15B 15/00 (2006.01) ,F15B 15/14 (2006.01) ,F16K 31/12 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
11
Resilient suspensions characterised by arrangement, location, or kind of springs
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
11
Resilient suspensions characterised by arrangement, location, or kind of springs
26
having fluid springs only, e.g. hydropneumatic springs
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
13
Resilient suspensions characterised by arrangement, location, or type of vibration-dampers
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
13
Resilient suspensions characterised by arrangement, location, or type of vibration-dampers
14
having dampers accumulating utilisable energy, e.g. compressing air
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
17
Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
17
Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
02
Spring characteristics
04
Fluid-spring characteristics
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
G
VEHICLE SUSPENSION ARRANGEMENTS
17
Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
06
Characteristics of dampers
08
Characteristics of fluid dampers
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
15
Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
15
Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
08
characterised by the construction of the motor unit
14
of the straight-cylinder type
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
31
Operating means; Releasing devices
12
actuated by fluid
Applicants:
CLEARMOTION, INC. [US/US]; 475 Wildwood Ave. Woburn, MA 01801, US
Inventors:
TUCKER, Clive; US
BELTER, Joseph, Thomas; US
Agent:
HARMON, John, S.; US
Priority Data:
62/513,37531.05.2017US
Title (EN) PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS
(FR) CLAPETS DE SOUFFLAGE ACTIONNÉS PAR PILOTE POUR ACTIONNEURS HYDRAULIQUES
Abstract:
(EN) Disclosed herein are various embodiments of a hydraulic actuator that includes one or more check valves having a dynamically varying cracking pressure. In certain embodiments, a hydraulic actuator may be configured to vary the cracking pressure of a check valve based on an operating condition of a pump of the hydraulic actuator. The check valve may be located along a bypass path in the hydraulic actuator, thereby allowing for fluid flow to bypass a pump of the hydraulic actuator by passing through the check valve. The use of such hydraulic actuators is contemplated in, for example, an active suspension system of a vehicle. Additionally, various embodiments of suitable check valves are disclosed. Additionally, methods are disclosed for operation of the check valve and the hydraulic actuator.
(FR) L'invention concerne divers modes de réalisation d'un actionneur hydraulique qui comprend un ou plusieurs clapets antiretour ayant une pression de fissuration variant de façon dynamique. Dans certains modes de réalisation, un actionneur hydraulique peut être conçu pour faire varier la pression de fissuration d'un clapet antiretour sur la base d'un état de fonctionnement d'une pompe de l'actionneur hydraulique. Le clapet antiretour peut être situé le long d'un trajet de dérivation dans l'actionneur hydraulique, permettant ainsi qu'un écoulement de fluide contourne une pompe de l'actionneur hydraulique en passant à travers le clapet antiretour. L'utilisation de tels actionneurs hydrauliques est envisagée, par exemple, dans un système de suspension active d'un véhicule. De plus, divers modes de réalisation de clapets antiretour appropriés sont décrits. De plus, l'invention concerne des procédés de fonctionnement du clapet antiretour et de l'actionneur hydraulique.
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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)