ELECTRIC VACUUM CLEANER

• US 3,856,488 A
• Filed: 09/04/1973
• Issued: 12/24/1974
• Est. Priority Date: 09/05/1972
• Status: Expired due to Term

• Current Assignee: Kouki Fukuda, Kuninobu Nannichi, Satoru Kato
• Original Assignee: Kouki Fukuda, Kuninobu Nannichi, Satoru Kato
• Inventors: Kato, Satoru, Fukuda, Kouki, Nannichi, Kuninobu
• Primary Examiner(s): Nozick, Bernard
• Application Number:
  US05/394,113
• Time in Patent Office: 476 Days
• Field of Search: 55/300,304,305,509,467,470,471-473,478,480,481,498-499,497 15/327E,352
• US Class Current: 55/300
• CPC Class Codes: A47L 9/102 Dust separators cyclones A47L9/16
• CPC Class Codes: A47L 9/122 flat
• CPC Class Codes: A47L 9/20 Means for cleaning filters
• CPC Class Codes: B01D 2279/55 for cleaning appliances, e.g. suction cleaners suction cleaners comprising filters A47L9/10
• CPC Class Codes: B01D 46/0006 Filter elements or cartridges installed in a drawer-like manner
• CPC Class Codes: B01D 46/2411 Filter cartridges
• CPC Class Codes: B01D 46/521 using folded, pleated material
• CPC Class Codes: B01D 46/76 involving vibrations

Abstract

A housing for a blower detachably engages a dust collector casing. A filter of rectangular cross section is removably inserted into the casing and has two opposite filter elements formed of corrugated filter paper and a vent disposed on its end adjacent to the housing with that end surrounded by a packing. In the assembled position, an annular protrusion on the housing pushes against the packing to maintain it hermetically engaged by the casing. In order to remove dust on the filter paper, a dusting device can manually slide along the vent to vibrate the paper through U-shaped strips connected at the outer edge to the inner surfaces of the filtration walls.

Claims

1. An electric cleaner device comprising, in combination, a housing including an exhaust port and an electrically operated blower disposed therein, a dust collector casing detachably engaged by said housing, said dust collector casing including a dust suction port and an opening for dumping dust, a tubular filter unit having end faces secured to an opening in a partition of said dust collector casing so as to be inserted into and pulled out from the latter through the interface at which said dust collector casing engages said housing, said filter unit having a vent opening formed only on that end face thereof adjacent to said interface of said dust collector casing and said housing, an annular packing element secured to the outer periphery of said end face of said filter unit, and a pushing element on said housing capable of engaging said packing element in the assembled position, said filter unit being sealed in said dust collector casing by having said packing element abutting against said dust collector casing while said pushing element pushes against The packing element to maintain the hermetic seal between said packing element and said dust collector casing.

2. An electric cleaner device as claimed in claim 1, wherein said housing includes a suction port at said interface communicating with the suction side of said electrically operated blower and said pushing element comprises an annular protrusion surrounding said suction port.

3. An electric cleaner device comprising, in combination, a main body including a suction port and an exhaust port and having an electrically operated blower disposed therein, a filter unit disposed within said main body to filter out dust particles contained in an air stream sucked into said main body through said suction port during the operation of said blower, said filter unit being of a rectangular box shape with end faces having hermetically secured to a pair of opposite lateral walls pieces of filter paper and a vent opening disposed on one end face thereof to communicate the interior of said filter unit with the suction side of said electrically operated blower therethrough and dusting means disposed in said vent opening to manually slide within said vent opening along the surfaces in contact with said pieces of filter paper thereby to remove dust particles adhering to the filtering surfaces of said pieces of filter paper.

4. An electric cleaner device as claimed in claim 3, wherein said filter unit includes a pair of pieces of corrugated filter paper disposed in spaced opposite relationship and a plurality of generally U-shaped vibratile strips connected to the internal surfaces of said pieces of corrugated filter paper to be interposed between respective pairs of opposite wave crests on the corrugated filter paper with the '"'"''"'"''"'"''"'"'U'"'"''"'"''"'"''"'"' opened to said vent opening, said filter unit being operatively associated with a vibration imparting element manually slidable along said vent opening and said pieces of corrugated filter paper to successively flip and vibrate the free end portions of the legs of the '"'"''"'"''"'"''"'"'U.'"'"''"'"''"'"''"'"'