Automatic safety leg

Claim 1

AN AUTOMATIC SAFETY LEG FOR VEHICLE LIFTS AND THE LIKE, COMPRISING: VERTICALLY DISPOSED TELESCOPING PISTON AND CYLINDER MEMBERS, SAID TELESCOPIC PISTON MEMBER HAVING A DIAMETRIC SLOT PROVIDED THERETHROUGH, A LATCHING BAR PIVOTALLY MOUNTED AND ROTATABLE WITHIN SAID SLOT, SAID LATCHING BAR BEING OF A WIDTH RETRACTABLE WITH SAID PISTON MEMBER AS VERTICALLY DISPOSED AND OF A LENGTH EXPOSING OPPOSITE ENDS THEREOF THROUGH SAID SLOT AS HORIZONTALLY DISPOSED FOR STOP ABUTMENT WITH THE TERMINAL END OF SAID CYLINDER MEMBER, SAID LATCHING BAR HAVING ONE END THEREOF INCLUSIVE OF THE CENTER OF GRAVITY AT A POSITION ABOVE AND TO ONE SIDE OF THE AXIS OF ROTATION THEREFOR, SAID SLOT BEING FORMED THROUGH ONE SIDE OF SAID PISTON MEMBER TO PERMIT ROTATION OF THE OTHER END THEREOF WITHIN SAID PISTON MEMBER AND TO PRECLUDE ROTATION THROUGH THE OTHER SIDE THEREOF FOR PREVENTING SAID LATCHING BAR FROM FLIPPING OVER, SAID LATCHING BAR INCLUDING CAM SURFACES OPERATIVE THEREOF INTO VERTICALLY DISPOSED POSITIONS PERMISSIVE OF RETRACTION OF SAID LATCHING BAR WITH SAID PISTON MEMBER INTO SAID CYLINDER MEMBER, AND REMOTELY CONTROLLED OPERATIVE MEANS PROVIDED ON THE UPPER END OF SAID CYLINDER MEMBER SEPARATE AND APART FROM SAID TELESCOPING MEMBERS FOR SELECTIVE ACTUATION OF SAID LATCHING BAR, SAID OPERATIVE MEANS INCLUDING A BELL CRANK LEVER HAVING ONE END DISPOSED FOR LIFTING ENGAGEMENT WITH AN OPERATIVE CAM SURFACE OF SAID LATCHING BAR AND RETRACTION POSITIONING OF SAID LATCHING MEMBER, MEANS ENGAGING AND BIASING SAID LEVER AGAINST ENGAGEMENT WITH SAID LATCHING BAR, AND A POWER OPERATED RECIPROCAL MEMBER ENGAGED WITH THE OTHER END OF SAID BELL CRANK LEVER FOR OVERCOMING SAID BIASING MEANS AND EFFECTING LEVER ENGAGEMENT WITH SAID LATCHING BAR, SAID LATCHING BAR HAVING THE LIFT OPERATIVE CAM SURFACE THEREOF INACCESSIBLY DIPOSED ONLY UPON ELEVATION OF SAID TELESCOPING MEMBERS FOR SUCH PURPOSE.