Poclain Hydraulics Industrie

Agco Sa

Technoboost

Ante Bozic

Louis B Bigo

Gilles G Lemaire

Julien Lambey

Jean-Pierre Souply

Olivier Balenghien

Philippe Boittin

Luka Peternel

Anze Celik

Clément Recoura

Philippe Lucienne

Bastien Clapit

Hervé Desumeur

François Xavier Lelay

Marièle Legai

The invention relates to a pressure-limiting device designed to be installed in a system comprising a first line () and a second line () that can comprise pressurised oil, as well as comprising a discharge and/or booster line (). The limiting device is characterised in that it comprises means () forming two valves, each associated with one of the two lines and adapted to open in the event of an overpressure above a pre-determined threshold on the associated line, so as to discharge the corresponding overpressure towards the discharge and/or booster line, said two valves comprising a common support stem () that operates in traction under the action of at least one spring defining a pressure corresponding to the pre-determined threshold. The invention also relates to a hydraulic assist system and to a vehicle comprising such a device.

Pressure limiting device, in particular for a hydraulic assist system for vehicles

The invention relates to a pressure-limiting device designed to be installed in a system comprising a first line () and a second line () that can comprise pressurised oil, as well as comprising a discharge and/or booster line (). The device also comprises a pressure selector () in the form of a cage defining two seats () and two pressure relief valves (). The limiting device is characterised in that it further comprises at least one means () for regulating a pressure relief valve, disposed on the outside of an axial end of the pressure selector (), in the form of a cage that allows the loading of the associated pressure relief valve to be regulated.

Pressure limiting device, in particular for an assist system for vehicles

The invention relates to a device comprising a first hydraulic apparatus (M) and a second hydraulic apparatus (M), the two motors (M, M) being connected by a first line () and a second line () enabling the admission or discharge of the oil in said motors (M, M), a booster pump (), arranged between a tank and a booster line, the booster line communicating with at least one of said lines (), characterized in that the pump () is configured to be able to suck oil into the booster line in order to allow the decompression of said first and second lines (). The invention also relates to a method for evacuating a device of the type described above, in which the booster pump () is activated in suction mode in the booster line to enable the disengagement of the machines (M, M).

Vehicle-mounted hydraulic assistance device and method for evacuating such a device

A hydraulic machine comprising a drum () rotated by an input shaft, comprising cylinders () distributed around the shaft, each receiving a piston that slides on the basis of the rotation of the shaft, each cylinder opening at an opening () on a transverse face of the drum bearing on a plate having inlet and outlet manifolds, the openings () comprising, relative to the cylinders () of same, angular offsets comprised within a total offset range, characterized in that the offsets of the openings () are disposed at one end or the other of this offset range.

Hydraulic machine comprising cylinders provided with angularly offset openings

A rear hitch assembly () for an agricultural tractor is provided. The assembly comprises a drawbar carrier element () mounted to the underside of a chassis () by a first connection which permits fore and aft movement of the carrier element relative to the chassis. A second connection includes a load sensor () which senses horizontal load placed upon the carrier element. Implement connector elements such as drawbars () and connector plates () are attached to the carrier in a fixed positional relationship. The horizontal load is isolated from the vertical load and measured by the load sensor to provide load information which can be utilised by brake systems for example.

Tractor rear hitch

The mechanism such as a motor or a pump comprises a cam () and a cylinder block () which has a plurality of cylinders (A,B,) connected to communication orifices (A,A;B,B) disposed in a communication face (). The mechanism further comprises a fluid distributor () having a distribution face () which is provided with distribution orifices (A-F,A-F) suitable for being connected to the feed or to the discharge. The communication orifices and the distribution orifices communicate with one another as the cylinder block and the distributor rotate relative to each other. At least certain cylinders (A,B) are connected to at least two communication orifices (A,A;B;B) spaced apart angularly (&#x3b1;) so that they communicate simultaneously with respective distribution orifices connected to the feed or to the discharge.

Hydraulic pump or motor

Growing community of inventors

Compiegne, France

Ante Bozic