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.)
Ardona Hermanos S R C
Original Assignee
Ardona Hermanos S R C
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 Ardona Hermanos S R CfiledCriticalArdona Hermanos S R C
Priority to ES0254390ApriorityCriticalpatent/ES254390A1/en
Publication of ES254390A1publicationCriticalpatent/ES254390A1/en
Improvements introduced in the hydraulic lifting jacks that are characterized by comprising a central hole in the axial direction in the base of the piston or lifting piston, as well as another transverse through hole communicated with the previous one, the former serving as a conduit for the pressed liquid and the second as a valve body for the end-of-stroke pressure cancellation device, and by synthetic rubber rings housed in respective grooves in the base of the piston, which make it airtight, preventing the escape of liquid from the cylinder. (Machine-translation by Google Translate, not legally binding)
ES0254390A1959-12-221959-12-22Improvements introduced in the hydraulic lifting cats (Machine-translation by Google Translate, not legally binding)
ExpiredES254390A1
(en)
Automatic hydraulic device, for the weighting of weights, used in mobile platforms or special loading systems. (Machine-translation by Google Translate, not legally binding)