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Individual
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Priority to ES0042288UpriorityCriticalpatent/ES42288Y/en
Publication of ES42288UpublicationCriticalpatent/ES42288U/en
Application grantedgrantedCritical
Publication of ES42288YpublicationCriticalpatent/ES42288Y/en
A device for maneuvering mechanical jacks, characterized in that it comprises on a support rod a movable box on it comprising this box an upper device for retaining the same on the rod and a lower device free with respect to this rod and operatively arranged for to establish a drag coupling on it, the upper device comprising a driving spring that secures its fixation on the stem by wedging the said device and carrying the lower device another spring that serves to keep it free with respect to the stem and recover this position when entrainment wedging is eventually caused. (Machine-translation by Google Translate, not legally binding)
ES0042288U1954-05-281954-05-28
Device for maneuvering mechanical jacks
ExpiredES42288Y
(en)