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| Number | Title | Issue Date |
| 8167580 | Axial piston machine with hydrostatic support of the holding-down device An axial piston machine is provided. A housing of the machine receives an eccentric disk and a rotatably mounted cylinder drum. The drum has cylinders and pistons. The pistons are reciprocatable in the cylinders. The ends of the cylinders project from the cylinders ... | 05/01/2012 |
| 8082125 | Apparatus and method for the condition-dependent maintenance of hydrostatic displacement units The invention relates to an apparatus (1) and a method for the condition-dependent maintenance of hydrostatic displacement units (2), in particular axial piston machines (3) operated as pumps or motors. Mounted on the hydrostatic displacement un... | 12/20/2011 |
| 8043006 | Axial piston machine with an elongated guide element for a cage segment An axial piston machine of swashplate construction is provided. The axial piston machine has two pivot bearing parts. In order to improve the guiding of a cage segment mounted within a gap between the two pivot bearing parts, a guide element, in the region of its ro... | 10/25/2011 |
| 8033107 | Hydrostatic drive having volumetric flow equalisation A hydrostatic drive with first and second hydraulic pumps and a dual-acting hydraulic cylinder. The dual-acting hydraulic cylinder has a first working chamber defined by a first piston surface and a second working chamber defined by a second piston surface. The firs... | 10/11/2011 |
| 7975600 | Axial piston machine, recoil plate and method of manufacturing a recoil plate The invention relates to an axial piston machine, in addition to a swash-plate for said machine and a method for producing a swash-plate. The swash-plate (24) is configured as a disc and has a central bore (32), which is encompassed by a collar (39 | 07/12/2011 |
| 7975599 | Regulating device for a hydrostatic piston engine with electronic control unit A regulating device for a hydrostatic piston engine is provided. The regulating device (30) has an electronic control unit (17) for generating adjusting signals. An adjusting position of the hydrostatic piston engine scanned by a feedback element (3... | 07/12/2011 |
| 7900446 | Hydrostatic drive with rotational speed limitation The invention related to a hydrostatic drive comprising a hydraulic pump (3) which is driven by a drive machine (2) and pumps into at least one first working line (4), and a pressure line (18) in which a feed quantity dependent on the spe... | 03/08/2011 |
| 7886533 | Hydrostatic travel drive with differential locking action The invention relates to a hydrostatic drive (1) comprising at least one first hydraulic pump (4), a second hydraulic pump (5), and first, a second, a third, and a forth hydraulic motor (7, 8, 9, 10). A first connection (12) of the... | 02/15/2011 |
| 7860683 | Device and method for state monitoring in hydrostatic displacement units The invention relates to a device (1) for state monitoring in hydrostatic displacement units (2), in particular in axial piston machines (3) operated as a pump or as a motor. The device (1) comprises an acquisition unit (4) with a ... | 12/28/2010 |
| 7784278 | Hydraulic drive The invention relates to a hydraulic drive, comprising a hydraulic cylinder (1), divided into a first operating pressure chamber (4) and a second operating pressure chamber (5), by an operating piston (3). The hydraulic drive further comp... | 08/31/2010 |
| 7726438 | Hydraulic system Disclosed is a hydraulic steering system (100) for a vehicle, especially a mobile working machine, comprising at least two steering cylinders (1, 2) within which two cylinder pistons (3, 4) can be displaced, and a first hydraulic pump (14... | 06/01/2010 |
| 7694776 | Hydraulic steering system with protection against uncontrolled steering movements A hydraulic steering system (1) including a hydraulic steering unit (2) and an auxiliary device (3). Said The steering unit (2) feeds a hydraulic medium to a steering cylinder (5) according to the movement of a steering wheel (4... | 04/13/2010 |
| 7661937 | Axial piston machine and a control plate for an axial piston engine The invention relates to a control plate (20) for an axial piston engine (1). The inventive control plate (20) comprises a through hole (38) and a radial internal edge of said control plate (20) embodied in the form of a centering ... | 02/16/2010 |
| 7661266 | Method for braking a vehicle driven by means of a hydrostatic gearbox and also a hydrostatic drive The invention relates to a method for braking a vehicle, driven by means of a hydrostatic gearbox (28) and a hydrostatic drive. The hydrostatic gearbox (28) comprises at least one adjustable hydrostatic motor (6,6). The vehicle driven by means o... | 02/16/2010 |
| 7650829 | Tubular piston for a piston engine and method of manufacturing the same The invention relates to a hollow piston (1) for a piston engine, said hollow piston comprising a peripheral wall (3a), a central rod (11), a front wall (3b) on the front end thereof, and an articulated part 4a... | 01/26/2010 |
| 7624748 | Valve The invention relates to a valve which is insertable into a receiving recess (21) of a valve carrier (22), the valve (1, 1′) comprising a first housing part (2, 2′) and a closing body (4). The closing body (4) cooperates... | 12/01/2009 |
| 7607384 | Piston for an axial-piston engine of the inclined-axis type and process for manufacturing such pistons A piston (2) for a piston engine, in particular for an axial-piston engine (1) of the inclined-axis type, comprises a conical section (26), a neck region (19) and a ball end (9) which is formed onto said neck region (19), a ... | 10/27/2009 |
| 7607298 | Hydrostatic drive The invention relates to a hydrostatic drive comprising a hydraulic pump (1) and at least one hydraulic engine (3). Said hydraulic engine (3) is contacted to a closed circuit via a first working line (5) and a second working line (6 | 10/27/2009 |
| 7607297 | Total power controller The invention relates to a total power regulation device for two pumps (2, 42), each of which is connected to a working conduit (5, 45). The delivery volume of the pumps (2, 42) can be set separately by a respective adjusting device (6, 46 | 10/27/2009 |
| 7597042 | Axial piston machine The invention relates to an axial position machine (1) comprising cylinder bores (9) that are located in a cylinder drum (4), pistons (10) that can be axially displaced in said boxes (9) and helical compression springs (22) ... | 10/06/2009 |
| 7585158 | Piston engine comprising a pulsation-reducing device The invention relates to a piston engine comprising a rotatably mounted cylindrical drum (2) provided with a plurality of cylindrical boreholes distributed over the circumference thereof and containing displaceable pistons. Said cylindrical boreholes (3,4 | 09/08/2009 |
| 7555899 | Regulator device and a valve unit for a hydraulic pump The invention relates to a regulator device (1) for a hydraulic pump which pumps into at least one working pipe (13), and to a valve unit for said pump. The pumping volume of the hydraulic pump (1) is regulated with the aid of a regulator device... | 07/07/2009 |
| 7526919 | Drive system having a common control-pressure connection The invention relates to a drive system (1) having a first driving shaft (2) and having a second driving shaft (3). The second driving shaft (3) is connected to a cylinder barrel of a hydrostatic piston machine (4) in a torsionally... | 05/05/2009 |
| 7513691 | Piston engine, shaft and rolling bearing for a piston engine Piston engine with a housing in which a shaft (19) is rotatably mounted in two pivot bearings of which at least one pivot bearing has an inner ring (26a) which is seated without radial clearance of motion on a supporting region (28) of a ... | 04/07/2009 |
| 7513189 | Hydrostatic piston machine with two hydraulic circuits The invention relates to a hydrostatic piston engine comprising a cylinder barrel (43) inside of which a first group of cylinder bores (53.1) and a second group of cylinder bores (53.2) are made. The cylinder bores of the first group (53.1 | 04/07/2009 |
| 7458313 | Tubular piston for a piston engine and method producing a tubular piston The invention relates to a tubular piston for a piston engine, comprising a tubular section, a collar shaped region and a ball pivot formed thereon, and an inner tube arranged in an outer tube. A cavity is at least partially formed between the outer tube and the inn... | 12/02/2008 |
| 7458312 | Axial piston machine for independent delivery into a plurality of hydraulic circuits The invention relates to an axial piston machine having a first group of pistons (34.1) for delivering into a first hydraulic circuit and a second group of pistons (34.2) for delivering into a second hydraulic circuit. The pistons (34.1) of the ... | 12/02/2008 |
| 7437873 | Connection block for a hydrostatic piston machine The invention relates to a connection block for a hydrostatic piston machine which is provided for simultaneous operation in a first hydraulic circuit and a second hydraulic circuit. A first working pressure duct (60) and a second working pressure duct (61... | 10/21/2008 |
| 7415821 | Hydraulic motor unit A hydraulic motor unit including a hydraulic motor (1′) which is connected to two working lines (3,4). The swiveling angle (α) of the hydraulic motor (1′) is adjustable by an adjusting unit (7) which is provided with a regulating pis... | 08/26/2008 |
| 7413424 | Gear pump and holding element therefor The gear pump unit (100) comprises a pump cover (1), an internal rotor (16) mounted rotatably in a recess (9) of the pump cover (1) and formed in a rotationally fixed manner on a driven plug-in shaft (11), and an external ro... | 08/19/2008 |
| 7395836 | Screwable check valve Disclosed is a check valve (5) that is screwed into a threaded bore (1) of a housing (2) of a hydraulic subassembly between a first pressure side (26) and a second pressure side (27) by means of an external thread (11) which... | 07/08/2008 |
| 7367258 | Longitudinally adjustable reversible axial piston machine The invention relates to a reversible axial piston machine (1) consisting of a cylinder drum (5) which rotates about a rotational axis (7) and in which pistons can be displaced in cylinders (6), said pistons being supported against an inc... | 05/06/2008 |
| 7367259 | Pressure pin and axial piston machine having said pressure pin An axial piston machine (1) having a rotatably mounted cylinder drum (5) which in turn has a center recess (38) and a plurality of cylinder bores (6) that extend substantially axially relative to the center bore (38) and in which p... | 05/06/2008 |
| 7363849 | Axial piston machine with offset positioning element and cam disk for such an axial piston machine The invention relates to an axial piston machine (1) comprising a housing (2) in which a drive disk (7) and a cylinder block (12) axially disposed next to it are received so as to be rotatable relative to each other about longitudinal cen... | 04/29/2008 |
| 7341434 | Regulatory device comprising a threshold valve control valve The invention relates to a regulatory device for a pump (2), whose delivery volume can be adjusted, said device comprising a control valve unit (3) for regulating a control pressure that operates in a control pressure chamber (21) of an actuator... | 03/11/2008 |
| 7334403 | Brake valve for a hydraulic transmission The invention relates to control of a hydrostatic gearbox, comprising a hydraulic pump (2), provided for pumping in a first pump-side main line (5a) or a second pump-side main line (6a). The hydrostatic gearbox further comprises a ... | 02/26/2008 |
| 7334513 | Axial piston machine having a fixable slide block on the swash plate The invention relates to an axial piston machine having a swash plate (12) and a control piston (18) which contacts the swash plate (12) by way of a slide block (31) which is partially received by the swash plate (12) or the contro... | 02/26/2008 |
| D553654 | Axial piston machine | 10/23/2007 |
| D547774 | Axial piston machine | 07/31/2007 |
| 7223019 | Swivel slide bearing The invention relates to a swivel slide bearing comprising an inner first bearing part (31) with an outer first bearing surface (31a) and comprising an outer second bearing part (32) with an inner second bearing surface (32a... | 05/29/2007 |
