Retrofitting methods and retrofitted hydraulic drives
US4324275A · kind A · utility
Inventor
Key dates
| Filing date | Jan 7, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Jan 7, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8782
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic drive is retrofitted with an on-off switching facility. To this end, a block is provided having a front portion fitting the drive at adjacent inlet and outlet openings and having a rear portion opposite the front portion. The block is provided with a first through-opening leading from the rear portion to the front portion for communication with the inlet opening, and with a second through-opening leading from the rear portion to the front portion for communication with the outlet opening. The first through-opening at the rear portion of the block is adapted for reception of a fitting or a hydraulic fluid delivery hose which ordinarily would have been received in the above mentioned inlet opening. Similarly, the second through-opening is adapted at the rear portion of the block for reception of a further fitting for a hydraulic fluid return hose which would otherwise have been received in the above mentioned outlet opening. The block is provided with a valve being manually actuable between an open position providing an interconnection between the through-openings for deactivating the drive and enclosed position blocking that interconnection for reactivation of the drive.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.