Hydraulic actuating system for movable parts
US6267432A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1998 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Nov 12, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60J7/1273
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic actuating system for movable parts, particularly for hinged covers on vehicles, includes at least one or more working cylinders with a piston equipped with sealing means pressing against the cylinder wall. A control unit is connected with one or all cylinders, and a pressure sensor connected to a control unit. Devices on the cylinder and piston are designed to cause pressure modulation in the cylinder and a common hydraulic circuit. The outgoing signals from the pressure sensor, are changed corresponding to the pressure modulations and are transmitted to the control unit to be used for position control and/or identification of one or all cylinders by the control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.