Hydromatik GmbH
45Patents
0Active
45Granted
34Portfolio score
Filing activity: Mar 1, 1974 → Dec 4, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3932993A | Control apparatus for an adjustable hydraulic machine driven by an adjustable driving motor | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US5184466A | Control and regulating device for a hydrostatic transmission | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US5216943A | Piston for hydrostatic axial and radial piston machines and method for the manufacture thereof | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5072655A | Pistons for axial piston machines | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4852463A | Axial piston machines whose pistons are formed as stepped pistons | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4939954A | Drive system for machines and vehicles, with a hydraulic and mechanical transmission arranged thereafter | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4602554A | Axial piston machine, more particularly axial piston pump of the inclined disc or skew axis type | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5076148A | Piston for axial piston machines | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4947687A | Drive system comprising a variable speed driving motor, an adjustable hydrostatic transmission and a gear-changing means | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5007332A | Piston for piston machines | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5095807A | Axial piston machine of the swashplate type with radial motion of tilt axis | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4870819A | Control device for a hydrostatic drive for at least two actuators | Physics | 17 | Expired |
| US5419130A | Hydrostatic machine with drain oil discharge | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4756157A | Control device for a hydrostatic gear | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4576554A | Swashplate axial piston pump | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5473895A | Hydrostatic travelling drive | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5048295A | Hydrostatic transmission | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4617853A | Axial piston machine of the skew axis type with two independent working streams | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4546692A | Radial bearing for drive plate of inclined-axis type axial piston machine | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4802336A | Hydrostatic transmission having a control and regulating device for adjusting the driving torque with superimposed output power limit regulation | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4382399A | Support for the drive shaft of an axial-piston machine of an inclined axis construction | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4756156A | Drive system with two hydrostatic gears | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4864822A | Control device for a hydrostatic drive for at least two actuators | Physics | 10 | Expired |
| US5101630A | Braking valve arrangement for a hydrostatic drive | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5024143A | Swashplate type hydraulic axial piston machine having a tracking device for the cage of the segmental rolling contact bearing of the swashplate | Emerging Cross-Sectional Technologies | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.