Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MADIX DRESDEN VEB
Original Assignee
MADIX DRESDEN VEB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MADIX DRESDEN VEBfiledCriticalMADIX DRESDEN VEB
Priority to ES8702184ApriorityCriticalpatent/ES2004764A6/en
Publication of ES2004764A6publicationCriticalpatent/ES2004764A6/en
The piston-type hydraulic actuator, particularly a portable vehicle jack, gives increased pump output in the unloaded state. Two pistons slide independently one inside the other in the axial direction. The inner piston has recesses in the outside and the outer one recesses in the inside, accommodating spring driving members.