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.)
Individual
Original Assignee
Individual
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 IndividualfiledCriticalIndividual
Priority to ES0329964ApriorityCriticalpatent/ES329964A3/en
Publication of ES329964A3publicationCriticalpatent/ES329964A3/en
IMPROVEMENTS INTRODUCED IN CRANES, characterized in that a column is formed by a certain number of superimposed sections, which are raised to their position by means of a boom that has a cage displaceable longitudinally along the column, by means of the lifting mechanism arranged to elevate the cage to a position in which a section of the column raised to that position by the boom can be connected to the highest section of the column, from which the lifting mechanism depends on a support unit, such as a frame or beam , arranged to rest in the upper part of the highest section of the column during the raising of the cage, and which can move longitudinally along the pillar to engage and support the cage in the elevated position thereof. (Machine-translation by Google Translate, not legally binding)
ES0329964A1966-08-061966-08-06Improvements introduced in cranes. (Machine-translation by Google Translate, not legally binding)
ExpiredES329964A3
(en)