Production of hydrostatic axial piston machines by means of stepper motors
US6283721A · kind A · utility
18Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1999 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Aug 26, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF03C1/0694
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A description is given of an adjustable hydrostatic axial piston machine whose angle can be varied by means of a servo-piston (9) to which actuating pressure can be applied and which is connected to an electrohydraulic control valve. The control valve has a control piston (15) and a control sleeve (22) which can be moved axially relative to one another. The control piston (15) can be axially adjusted with a stepper motor (10), and the control sleeve (22) is coupled mechanically or hydraulically to an adjusting mechanism (9, 7) for the angle for the purpose of feeding back the angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.