Hydraulic drive and method for discreetly changing the positional output of said drive
US10113563B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2014 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Jun 8, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7656
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic drive carries out a method for discretely changing a positional output on the hydraulic drive. At least one displacement cylinder incrementally supplies or discharges the cylinder volume to or from the drive by displacing the cylinder piston element from a starting to an end position depending on at least one input signal. The piston element is repeatedly displaced from starting to end position and back to discretely change the positional output correspondingly to the supplied or discharged displacement volume. The cylinder is hydraulically connected to a pressure medium source supply or return line while displacing the piston element from starting to end position. The changed positional output is restored in a successive step. The cylinder chambers of the displacement cylinder are hydraulically short-circuited by a short-circuit line hydraulically separated from the supply or return line when returning the piston element from the end to the starting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.