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WO/2009/076757A2 |
A system for reversible storage of energy, the system comprising: means for generating energy;first conversion means for converting the energy into stored energy by means of low ratio (3.2:1 or less) high pressure (200 bar minimum) compr...
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WO/2009/065729A1 |
The invention relates to a pressure accumulator (2) comprising a housing (9), a movable element (10) that is disposed inside the housing (9), and an energy store (23). The movable element (8) has a first pressure surface (10). The first ...
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WO/2009/063300A1 |
In a brake control system, hydraulic pressure in a power hydraulic pressure source (50, 250, 350, 450, 550) during normal braking is kept low because additional hydraulic pressure may be supplied by driving a pump (34) during emergency b...
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WO/2009/047942A1 |
An outside gas type accumulator has a mechanism for reducing the pressure difference occurring when liquid confined in a liquid chamber and gas filling the liquid chamber in zero-down state expand thermally, and restrains abnormal deform...
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WO/2009/047964A1 |
An outer gas type or inner gas type accumulator is provided with a mechanism for reducing a pressure difference generated when liquid and gas confined in a liquid chamber at the time of a zero-down state is expanded thermally. The mechan...
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WO/2009/037395A2 |
The hydraulic supply for a variable compression ratio engine comprises a compressed-air oil pressure accumulator (251), connected to a multi-stage pressure amplifier (241) having at least one stage the outlet pressure of which acts upon ...
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WO/2009/033199A1 |
The invention relates to a drive device (1) for a bending press, especially a folding press (2), comprising a press frame (3), a press table (9) and a press bar (11) that can be adjusted relative to the press table (9) via a hydraulic sy...
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WO/2009/035945A1 |
A pressure-compensated accumulator bottle is provided. In one embodiment, the accumulator bottle includes a housing and an interior wall that generally define first, second, and third chambers within the housing. In this embodiment, a sp...
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WO/2009/015705A1 |
A guiding device for a metal bellows (3), which on at least one bellows end (37) comprises an end body (39) movable along the wall of a housing (10) during the expansion and contraction of the bellows (3), a guiding element being provide...
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WO/2009/009810A1 |
The invention relates to a hydraulic oil tank for work machines, wherein the hydraulic oil tank comprises a substantially parallelepiped tank housing (1), which is provided with a hydraulic oil inlet (2) to a hydraulic oil cooler, which ...
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WO/2009/006961A1 |
A safety device for closure elements (1) on pressure-medium-containing tanks, in particular on hydropneumatic devices such as hydraulic accumulators, wherein a screw connection is provided as a closure device on a filling or checking por...
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WO/2008/157327A1 |
A lightweight, optimally efficient, easily serviced, piston-in-sleeve high pressure accumulator is provided. The accumulator includes one or more cylindrical composite pressure vessel separate end cap manifolds. A piston slidably dispose...
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WO/2008/141857A1 |
The invention relates to a protective layer (7, 8) for surfaces of elastomeric elements (1), particularly for the bellows wall (1) of an air spring bellows. The surfaces of the elastomeric elements in air springs of rail or street vehicl...
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WO/2008/128830A1 |
The invention discloses a hydraulic/electric transducer having a pump driven by natural forces, via which a hydraulic accumulator is charged and a hydraulic motor is driven. The latter drives a generator for converting the hydraulic ener...
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WO/2008/119587A1 |
The present invention relates to a hydropneumatic storage tank comprising a first space (2) and a second space (3) which are disposed in a housing (5), a separating element (4) which separates the first space (2) from the second space (3...
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WO/2008/118086A1 |
A unit (1 ) for accumulating and degassing oil in an oil system comprising a reservoir (2) provided with a first chamber (3) in which the oil is subjected to atmospheric pressure and in which the oil volume is allowed to vary, a second c...
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WO/2008/114109A1 |
The hydraulic apparatus (1) comprises: pumping means (2) for pumping a fluid at a f first pressure (P1); user means (3) of said fluid at said first pressure (P1); emergency supply means (9, 109) connectabl e to said user means (3) activa...
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WO/2008/110662A1 |
An attenuator (7) for damping pressure fluctuations in a hydraulic system, which attenuator comprises a body (8) with a chamber (9), in which a movable piston (10) loaded by a spring (11 ) is adapted, a fluid space (17) inside the chambe...
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WO/2008/106923A2 |
The invention relates to a hydraulic system, comprising a pump for delivering a hydraulic fluid from a suction side to a pressure side, wherein an accumulator is disposed on the pressure side, wherein a hydraulic control valve is dispose...
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WO/2008/089908A1 |
The invention relates to a structural component in the form of a parting element (10) which extends in two different main directions (12,13), is of at least single-layer design and is elastically flexible, which parting element (10) has ...
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WO/2008/089812A1 |
In a pressure tank, in particular hydraulic accumulator (3, 5), having a parting element (1), which parting element (1) separates a space (11) for a first, in particular gaseous, working medium from a space for a second working medium, i...
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WO/2008/075134A1 |
A hydraulic traction system for vehicles is described. The system comprises a hydraulic vane motor mounted at each wheel of the vehicle, and equal number of identical hydraulic vane motors operated as engine driven pumps, and a control s...
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WO/2008/065888A1 |
Intended is to provide an accumulator water injection tank having a flow damper, which can establish an intense vortex at a low flow rate in a vortex chamber, thereby to establish a high flow resistance. In the flow damper (24) of the ac...
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WO/2008/066484A1 |
An apparatus for degassing oil comprising :- a room (30) for receiving oil comprising a first chamber (30a) and a second chamber (30b) connected to the first chamber; - an inlet (31 ) feeding oil into the first chamber; - an outlet (32) ...
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WO/2008/065889A1 |
A pressure-accumulating water-charging tank having a flow damper that can be controlled, without requiring a large amount of labor hours and costs, so that a swirl is not formed in a swirl chamber in large flowrate operation. The flow da...
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WO/2008/056182A1 |
An underwater apparatus for operating underwater equipment, the underwater apparatus comprising a body (102), a fluid chamber (160) within the body (102) for selectively containing power fluid, a piston assembly (130,112,120) movably dis...
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WO/2008/056014A1 |
The invention relates to a liquid pressure converter for use in pumping systems without any external energy input. The system is based on pressure accumulators consisting of devices having an inlet tube and an outlet tube, in which a pre...
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WO/2008/044522A1 |
A reservoir operating in a highly reliable manner by using a simple structure. The reservoir (13) has a cylinder (23) and a cover member (24). The cover member (24) is provided at the bottom of the cylinder (23) and is formed so that a p...
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WO/2008/045468A1 |
An accumulator system (20) is configured to store energy and includes an accumulator (72) having a liquid chamber coupled to a liquid port (110) and an air chamber coupled to an air port (74). The liquid chamber and the air chamber are s...
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WO/2008/042307A2 |
A fluid power system includes a hydraulic machine. A pilot-controlled supply valve controls high-pressure fluid to the machine. The valve is coupled between the hydraulic machine and a high-pressure fluid source, and includes a control p...
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WO/2008/042308A2 |
A fail-safe system for a hybrid vehicle employing an over-center variable-displacement hydraulic motor includes an actuator configured to stroke the motor to a zero angle if each of two control ports is supplied with fluid at an equal pr...
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WO/2008/039158A1 |
Hydraulic assembly for controlling and driven of small hydraulic units, especially clutch and brake cylinders (551, 552) of a forestry winch (99), comprises at least a reservoir (510) for hydraulic media, a pump (500) for producing a req...
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WO/2008/036019A1 |
A hydraulic impact device comprises a housing (10) with a cylinder (11) and a hammer piston (13) guided in the cylinder (11) and reciprocated by a hydraulic control system including a directional valve (18) and a pressure accumulator (19...
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WO/2008/034333A1 |
A fluid tank is provided for a mobile machine. The fluid tank may have a first enclosed vessel and a second enclosed vessel. The second enclosed vessel may be joined to the first enclosed vessel such that a third enclosed vessel is creat...
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WO/2008/017447A1 |
The invention relates to a hydraulic system for adjusting a vehicle folding roof, in particular cabriolet canopy, to a vehicle folding roof with a hydraulic system of said type and to a method for adjusting the vehicle folding roof. The ...
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WO/2008/012558A2 |
A variable transmission comprises a first fluid working machine (1) for connection to a prime mover (2), a second fluid working machine (5) for connection to a mechanical load (6) and a fluid system linking the first and second working m...
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WO/2007/141092A1 |
The invention relates to a hydraulic vehicle brake system (10) having a service brake which can be actuated by muscle force and having a device for regulating the wheel slip. It is proposed according to the invention, in a vehicle brake ...
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WO/2007/137548A1 |
The invention relates to a flow element for a hydraulic system which comprises a master cylinder and a slave cylinder and a pressure line interconnecting the same. The flow element comprises a pressure relief valve and a damping filter i...
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WO/2007/134440A1 |
Uattended pneumatic device to activate a tool such as a clipper operated by the displacement of an operator in opposite operating directions. The device is made of a rigid body – such as a pole - fitted with a tool at one end and a por...
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WO/2007/124882A1 |
The invention relates to a hydraulic fluid reservoir (30) with a high-pressure chamber (32) and a low-pressure chamber (33), wherein the high-pressure chamber (32) equipped with a compensation volume (36) is located in the low-pressure c...
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WO/2007/119328A1 |
A liquid tank (1) is provided with a tank main body (10) for storing liquid, and a bubble removing apparatus (40) arranged in the tank main body (10) for removing bubbles included in the liquid. The tank main body (10) is provided with a...
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WO/2007/118500A1 |
Described is a device (5) for storing hydraulic fluid of a hydraulic system (19) of a transmission device (3) having at least one storage space (9) which is delimited by a housing device (7) and a delimiting device (8) and can be operati...
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WO/2007/112775A1 |
A hydraulic accumulator with an accumulator housing (1), in the interior of which a metal bellows (3) is arranged, the metal bellows having a plurality of membrane discs (17, 19), the edges of which are alternately connected to one anoth...
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WO/2007/104592A1 |
An accumulator (100) for a hydraulic system, wherein the accumulator (100) comprises a liner (110), a piston (140) and a housing (200), that defines a pressure chamber (PC), for receiving hydraulic fluid at high pressure, wherein the pis...
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WO/2007/101467A1 |
The invention relates to a method of controlling a hydrostatic drive (1). The hydrostatic drive (1) comprises a hydraulic pump (3) and a hydraulic motor (7). Furthermore, the hydrostatic drive (1) comprises a first and a second hydraulic...
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WO/2007/098795A1 |
A pressure accumulator, in particular a pulsation damper, having an accumulator housing (1) which defines a longitudinal axis (3) and has an inflow opening (15) and an outflow opening (17) for a fluid, wherein two working spaces, in part...
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WO/2007/090825A2 |
Piston device for converting a flow of fluid into a movement, and vice versa, comprising a rigid hollow body (4) having walls (5, 6) which define an inner housing (9) and at least one rigid piston (1) engaged in said inner housing so as ...
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WO/2007/083471A1 |
A metal bellows accumulator having a metal bellows that is fixed at one end in a shell and joined at the other end to a bellows cap, thereby partitioning the inside of the shell into an outer gas chamber and an inner liquid chamber. Even...
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WO/2007/080673A1 |
A metallic bellows type accumulator that is structured so as to, at the time of zero-down of accumulator, realize valve body compression and sealing, thereby inhibiting the occurrence of burr/sagging and enhancing the closing capability ...
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WO/2007/079935A1 |
The invention relates to a hydrostatic drive. The hydrostatic drive (1) comprises a hydraulic pump (3) and a hydraulic motor (7). The hydraulic pump (3) can be connected by means of a first working line (5) to a first working line connec...
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