Hollow wall anchor with pivoted anchor member

Claim 1

A WALL ANCHOR FOR LOCKING IN A MOUNTING OPENING OF WALL, SAID WALL ANCHOR COMPRISING AN OPEN-ENDED SHELL HAVING OUTWARDLY TURNED FLANGES AT ONE END, SAID SHELL BEING INSERTABLE IN SAID MOUNTING OPENING FROM ONE SIDE OF THE WALL WHEREBY THE OTHER END OF SAID SHELL PROTRUDES FROM THE OTHER SIDE OF THE WALL, SAID SHELL HAVING LENGTHWISE SLOTS IN OPPOSITELY DISPOSED SIDE WALLS EXTENDING FROM ADJACENT SAID ONE END AND TERMINATING SHORT OF SAID OTHER END, AN INWARDLY PROTRUDING DEFLECTIVE LIP AT THE END OF ONE OF SAID SLOTS ADJACENT SAID OTHER END OF THE SHELL, AN ANCHOR MEMBER HAVING A LONG ARM AND A SHORT ARM EXTENDING AT A RIGHT ANGLE FROM THE LONG ARM AT ONE END THEREOF, SAID LONG ARM BEING LONGER THAN THE INTERIOR WIDTH OF THE SHELL AND HAVING A GUIDE MEANS LATERALLY EXTENDING FROM SAID LONG ARM AT THE SAME SIDE AS SAID SHORT ARM AND SAID SHORT ARM BEING OF A LENGTH CORRSPONDING SUBSTANTIALLY TO AND FITTING THE INTERIOR WIDTH OF THE SHELL, SAID ANCHOR MEMBER BEING SLIDABLY INSERTED INTO SAID SHELL FROM ONE END THEREOF IN A MOUNTING POSITION IN WHICH SAID LONG ARM IS SUBSTANTIALLY PARALLEL TO THE SHELL WALL HAVING THE SLOT TERMINATING IN THE LIP, AND LOCKING MEANS INSERTED INTO SAID SHELL AND INTO PRESSURE ENGAGEMENT WITH SAID SHORT ARM TO DISPLACE SAID ANCHOR MEMBER IN THE SHELL TOWARDS THE LIP FOR PIVOTING SAID ANCHOR MEMBER ABOUT SAID LIP FROM ITS MOUNTING POSITION INTO A LOCKING POSITION IN WHICH THE ANCHOR MEMBER IS SUBSTANTIALLY TRANSVERSE OF THE SHELL AND PROTRUDES THEREFROM THROUGH SAID SHELL SLOTS, SAID ANCHOR MEMBER BEING PROVIDED WITH MEANS TO COOPERATE WITH SAID LOCKING MEANS WHEN SAID ANCHOR MEMBER IS IN SAID TRANSVERSE POSITION WHEREBY SAID ANCHOR MEMBER MAY ENGAGE SAID OTHER SIDE OF SAID WALL, SAID GUIDE MEANS ENGAGING SIDE WALL PORTIONS OF THE SHELL TO GUIDE THE MEMBER ALONG THE WALL HAVING THE LIP AND TOWARD THE SAME.