Hydraulic operating apparatus
US6256987A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Aug 6, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7142
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic operating apparatus, especially for a vehicle covering, includes a reversible pump (2) which, via hydraulic lines (3, 4), one of which is in all cases provided with an unblockable check valve (7), is connected with the working chambers of at least one double-acting piston-cylinder arrangement (1). In order to make possible a very flexible supply and control of mutually independently operated piston-cylinder arrangements with a minimum of constructive and control-technical effort, additional hydraulic lines (10, 11) branch off from both hydraulic lines (3, 4) of the reversible pump, into which the check valves are placed, which additional hydraulic lines lead into a common hydraulic line (12) to at least one additional piston cylinder arrangement (13, 14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.