WO2025256984 - VARIABLE COUNTERBALANCE FOR A PRIMARY CONTROLLED DRIVE IN A LIFTING APPARATUS
National phase entry is expected:
Publication Number
WO/2025/256984
Publication Date
18.12.2025
International Application No.
PCT/EP2025/065456
International Filing Date
04.06.2025
Title **
[English]
VARIABLE COUNTERBALANCE FOR A PRIMARY CONTROLLED DRIVE IN A LIFTING APPARATUS
[French]
CONTREPOIDS VARIABLE POUR ENTRAÎNEMENT COMMANDÉ PRIMAIRE DANS UN APPAREIL DE LEVAGE
Applicants **
ROBERT BOSCH GMBH
Inventors
DIEHL, Jim
FREY, Jon
Priority Data
18/744165
14.06.2024
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1880 | |
| EPO | Filing, Examination, Granting | 8113 | |
| Japan | Filing, Examination, Granting | 1998 | |
| South Korea | Filing, Examination, Granting | 1757 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,488
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Abstract[English]
An elongated boom (10) of a heavy-lift machine is pivotably mounted at a pivot mount with the load carried by the free end (11) of the boom (10), pivoted by a primary actuator (14) connected to a drive end (15) of the boom (10). A counterbalance component (16, 30) is engaged to the boom (10) to counterbalance the weight-generated torque of the boom (10). The counterbalance component (16, 30) includes a hydraulic actuator (30) with the piston (17, 32) connected to the boom (10) and a liquid-filled cylinder (18) connected to a gas-filled accumulator (45) in a hydraulic circuit (40). The gas pressure in the accumulator (45) is adjustable by the fluid provided to the hydraulic actuator (30). The piston (17, 32) of the counterbalance component (16, 30) applies a counterbalance force to the boom (10) as a function of the pressure of the gas compressed in the accumulator (45)[French]
Une flèche allongée (10) d'une machine de levage de charges lourdes est montée pivotante au niveau d'un support à pivot, la charge étant portée par l'extrémité libre (11) de la flèche (10), étant pivotée par un actionneur primaire (14) relié à une extrémité d'entraînement (15) de la flèche (10). Un composant de contrepoids (16, 30) est en prise avec la flèche (10) pour contrebalancer le couple de la flèche (10) généré par le poids. Le composant de contrepoids (16, 30) comprend un actionneur hydraulique (30), le piston (17, 32) étant relié à la flèche (10) et un vérin rempli de liquide (18) relié à un accumulateur rempli de gaz (45) dans un circuit hydraulique (40). La pression de gaz dans l'accumulateur (45) peut être réglée par le fluide fourni à l'actionneur hydraulique (30). Le piston (17, 32) du composant de contrepoids (16, 30) applique une force de contrepoids à la flèche (10) en fonction de la pression du gaz comprimé dans l'accumulateur (45).