FILTER BAG

• US 3,477,209 A
• Filed: 11/29/1965
• Issued: 11/11/1969
• Est. Priority Date: 11/29/1965
• Status: Expired due to Term

• Current Assignee: John J. Fesco
• Original Assignee: John J. Fesco
• Inventors: Fesco, John J.
• Application Number:
  US04/510,178
• Time in Patent Office: 1,443 Days
• US Class Current: 55/367
• CPC Class Codes: A47L 9/14 Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
• CPC Class Codes: Y10S 55/02 Vacuum cleaner bags

Claims

1. A VACUUM CLEANER FILTER BAG COMPRISING A BAG BODY FORMED OF AIR PERVIOUS SHEET MATERIAL, SAID BODY BEING CLOSED AT ONE END AND OPENABLE AT THE OTHER END, SAID OPENABLE END COMPRISING A CLOSED RECTANGULAR BOTTOM CLOSED BY A VALVE DEFINED BY OVERLAPPING FLAPS SAID FLAPS BEING ATTACHED TO SAID BAG BODY AND THE COLLAR ALONG ONE EDGE THEREOF, SAID FLAPS BEING FREE OF MUTUAL SECUREMENT TO ONE ANOTHER ALONG THEIR FREE EDGES AND BEING MOVABLE INTO SAID BAG BODY BY VACUUM PRESSURE, AND A COLLAR MEANS PROVIDED AT SAID OTHER END, SAID COLLAR MEANS HAVING RECTANGULAR CONFORMATION AND BEING SECURED ALONG THE MARGINAL EDGE PORTIONS OF SAID RECTANGULALR BOTTOM AT BOTH OF THE OPPOSITE SURFACES THEREOF, SAID COLLAR MEANS COMPRISING A PAIR OF COLLAR SEGMENTS CONSISTING OF A FIRST AND SECOND SEGMENT TO FORM A RECTANGULAR COLLAR, THE FIRST SEGMENT OVERLYING SAID OTHER END ALONG SAID PERIPHERAL EDGE AND THE SECOND SEGMENT UNDERLYING SAID OTHER END ALONG SAID PERIPHERAL EDGE THEREBY DEFINING SAID OPENABLE END FOR ENTRY OF DUST LADEN AIR INTO SAID BAG BODY, SAID COLLAR SEGMENTS EACH COMPRISING A PAIR OF U-SHAPED PORTIONS SECURED TOGETHER ALONG A COMMON FOLD LINE, EACH PORTION CONSISTING OF TWO LEGS AND A BASE MEMBER JOINING THE LEGS, SAID BASE MEMBERS BEING PARALLEL, SAID U-SHAPED PORTIONS BEING IN ABUTTING RELATIONSHIP AT THE ENDS OF THE LEGS OPPOSITE THE BASE MEMBERS TO FORM A CENTER LINE ALONG WHICH SAID U-SHAPED PORTIONS ARE FOLDABLE.