Landing gear for semi-trailers and the like

Claim 1

IN A SEMI-TRAILER OR THE LIKE HAVING A FRAME TO WHICH LANDING GEAR MAY BE SECURED, LANDING GEAR STRUCTURE COMPRISING, AN EXTENSIBLE LEG HAVING GROUND ENGAGING MEANS, MOUNTING MEANS ADAPTED TO BE SECURED TO THE TRAILER FRAME AND MOUNTING SAID LEG FOR SWINGING BETWEEN A DOWNWARD POSITION AND A RETRACTED POSITION, A STRUT HAVING TWO MEMBERS PIVOTED TOGETHER, ONE MEMBER HAVING A PIVOTAL CONNECTION TO SAID LEG AND THE OTHER MEMBER BEING ADAPTED TO BE PIVOTALLY SECURED TO THE TRAILER FRAME, SAID STRUT SUPPORTING SAID LEG AGAINST SWINGING MOVEMENT WHEN SAID MEMBERS ARE IN MUTUALLY EXTENDED RELATION, SAID ONE MEMBER HAVING AN EXTENSION BEYOND THE PIVOT BETWEEN SAID MEMBERS, A KEEPER ADAPTED TO BE MOUNTED ON THE TRAILER FRAME AND ENGAGING SAID EXTENSION TO RESTRAIN SWINGING MOVEMENT THEREOF WHEREBY TO RETAIN SAID STRUT MEMBERS IN MUTUALLY EXTENDED RELATION, OPERATING MEANS OPERABLE TO EXTEND AND SHORTEN SAID LEG WHILE SAID STRUT MEMBERS ARE IN MUTUALLY EXTENDED RELATION, SAID KEEPER BEING RELEASABLE TO FACILITATE SWINGING MOVEMENT OF SAID LEG, SAID OPERATING MEANS INCLUDING MEANS OPERABLE WHEN SAID KEEPER IS RELEASED TO SWING SAID LEG IN SHORTENED CONDITION TO SAID RETRACTED POSITION, SAID LEG AND KEEPER CARRYING ELEMENTS WHICH ARE INTERENGAGEABLE IN SAID RETRACTED POSITION OF SAID LEG TO PROVIDE A FIRST SUPPORT SECURING SAID LEG IN SAID RETRACTED POSITION, A SECOND SUPPORT ADAPTED TO BE SECURED TO THE TRAILER FRAME AT A LOCATION DISPLACED FROM THE PATH OF SWINGING MOVEMENT OF SAID LEG IN SHORTENED CONDITION, SAID OPERATING MEANS BEING OPERABLE TO EXTEND SAID LEG INTO SUPPORTED RELATION WITH SAID SECOND SUPPORT WHILE SAID ELEMENTS ARE INTERENGAGED, SAID ELEMENTS BEING DISENGAGEABLE UPON SHORTENING OF SAID LEG AWAY FROM SAID SECOND SUPPORT TO FACILITATE SWINGING SAID LEG TO SAID DOWNWARD POSITION.