Hydraulic booster
US4050251A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jan 26, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a hydraulic servomotor comprising a housing provided with a bore slidably receiving two pistons separating an actuating chamber from an utilization chamber, said pistons including an annular outer piston and an inner piston received within the annular piston. Releasable coupling means are provided between both pistons to permit said pistons to move in unison when high pressure fluid is available in the actuating chamber and to permit the inner piston to be moved alone by the push rod in the event of a high pressure failure in the actuating chamber. The motion of the outer piston towards the interior of the actuating chamber is limited by an abutment fixed to the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.