Article of manufacture with retracting casters and the like

Claim 1

A WHEELED ARTICLE COMPRISING, (A) A BODY MEMBER HAVING A TOP SURFACE, (B) A PLURALITY OF LEG MEANS FOR SUPPORTING SAID BODY ON A SUPPORTING SURFACE, (C) EACH OF SAID LEG MEANS INCLUDIND A FIRST MEMBER FIXED TO SAID BODY, AND A SECOND MEMBER TELESCOPICALLY MOUNTED WITH RESPECT TO EACH OF SAID FIXED MEMBERS FOR RELATIVE MOVEMENT BETWEEN EXTENDED AND RETRACTED RELATIONSHIP WITH RESPECT TO SAID FIXED MEMBER, (D) WHEEL MEANS CONNECTED TO THE END OF SAID MOVABLE SECOND MEMBER, (E) ACTUATING MEANS OPERATIVELY ASSOCIATED WITH SAID SECOND MEMBER FOR SIMULTANEOUSLY EXTENDING EACH OF SAID LEG MEANS, (F) SAID ACTUATING MEANS INCLUDING A BEARING MEANS ROTATABLY MOUNTED ON SAID BODY MEMBER FOR ROTATION IN A PLANE PARALLEL TO SAID TOP SURFACE, (G) AN OPERATING LINK OPERATIVELY CONNECTED BETWEEN SAID BEARING MEANS AND EACH OF SAID SECOND MEMBERS OF SAID LEG MEANS, (H) EACH OF SAID LINKS AND ASSOCIATED SECOND LEG MEMBERS HAVING COMPLEMENTARY CAMMING MEANS WHEREBY EACH OF SAID LEG MEANS IS EXTENDED WHEN SAID ACTUATING MEANS IS OPERATED, (I) AND AN OPERATING LEVER CONNECTED TO SAID BEARING MEANS AT TWO SPACED POINTS TO OPERATIVELY ROTATE THE SAME TO EFFECT RETRACTION AND EXTENSION OF SAID WHEEL MEANS.