Cover and latch arrangement for portable vacuum cleaner

Claim 1

IN A PORTABLE VACUUM CLEANER HAVING A HOUSING WITH A GENERALLY RECTANGULAR OPEN END FOR RECEIVING A DUST BAG, A COVER AND LATCH ARRANGEMENT COMPRISING: (A) A GENERALLY RECTANGULAR PLANAR COVER HAVING A LUG PROJECTING FROM THE PLANE OF THE COVER ALONG EACH OF OPPOSED EDGES THEREOF, (B) SAID LUGS BEING SYMMETRICALLY ABOUT AN AXIS PARALLEL TO SAID EDGES THROUGH THE CENTER OF THE COVER IN ORDER THAT SAID COVER MAY BE ORIENTED ON THE HOUSING IN EITHER A FIRST POSITION OR A 180* REVERSED SECOND POSITION, (C) A FLANGE ON THE HOUSING ADJACENT THE OPEN END THEREOF, (D) SAID FLANGE HAVING OPPOSED PORIONS ADJACENT THE LONGER SIDES OF THE OPEN END OF THE HOUSING FOR GUIDING AND POSITIONING SAID COVER, (E) A LIP EXTENDING FRON A PORTION OF SAID FLANGE ALONG A SHORTER SIDE OF THE OPEN END FOR ENGAGING AND RETAINING ONE OF SAID LUGS WHEN SAID COVER IS MOUNTED ON SAID HOUSING, AND (F) A TOGGLE LATCH COMPRISING: (1) A CLAMP HAVING A HOOKED END PORTION FOR ENGAGING ONE OF SAID LUGS, AND (2) A U-SHAPED OVERCENTER SPRING PIVOTALLY CONNECTED TO SAID HOUSING AND SAID CLAMP FOR PROVIDING A TOGGLE JOINT THEREBETWEEN TO ESTABLISH AN OVERCENTER SPRING ACTION FOR SAID LATCH, (G) SAID TOGGLE LATCH BEING PIVOTALLY MOUNTED ADJACENT THE OTHER OF THE SHORTER SIDES OF THE OPEN END OF THE HOUSING OPPOSITE SAID LIP ENGAGING THE OTHER OF SAID LUGS TO URGE SAID COVER INTO SEALING ENGAGEMENT WITH THE DUST BAG.