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.)
Publication of BE552167ApublicationCriticalpatent/BE552167A/xx
B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
B66C1/46—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces by inflatable elements