Floor sweeper

• US 4,823,422 A
• Filed: 06/03/1988
• Issued: 04/25/1989
• Est. Priority Date: 04/13/1988
• Status: Expired due to Term

• Current Assignee: Yamazaki Company Limited (Yamazaki Baking Company Limited)
• Original Assignee: Yamazaki Company Limited (Yamazaki Baking Company Limited)
• Inventors: Yoshimura, Kouichi, Ishii, Tsuyoshi
• Primary Examiner(s): ROBERTS JR, EDWARD
• Application Number:
  US07/203,176
• Time in Patent Office: 326 Days
• Field of Search: 15/41 R-45, 15/48, 15/79 R
• US Class Current: 15/41.1
• CPC Class Codes: A47L 11/33 having means for storing dirt
• CPC Class Codes: A47L 11/4013 Contaminants collecting devices, i.e. hoppers, tanks or the like
• CPC Class Codes: A47L 11/4041 Roll shaped surface treating tools
• CPC Class Codes: A47L 11/4052 Movement of the tools or the like perpendicular to the cleaning surface
• CPC Class Codes: A47L 11/4069 Driving or transmission means for the cleaning tools
• CPC Class Codes: A47L 11/4072 Arrangement of castors or wheels

Abstract

A manual cleaner has a case, a roller brush having driven rollers and mounted between the side plates of the case, wheels kept in contact with the driven rollers and mounted on axles extending in parallel with the roller bruch, and dust pans provided at both sides of the roller brush. The dust pans are formed at both sides with bearing projections rotatably received in the side plates of the case so as to be pivotable about the projections. The projections are each formed with an axle receiving hole elongated horizontally so that the axles received in the holes can move toward and away from the roller brush. Thus the wheels can move toward and away from the driven rollers while keeping the dust pans in a stationary position. The shaft of the roller brush has both ends vertically movably mounted in bearing plates provided at both sides of the case and biased by springs downwardly. Spring members integrally formed on the bearing plates extend in opposite directions to abut and urge the dust pans closed.

Claims

1. A manual cleaner comprising a case having a pair of side plates and having its bottom open, wheels mounted on axles extending through said side plates, a roller brush mounted so as to extend between said side plates and substantially in parallel with said axles, driven rollers, mounted at both ends of said roller brush and driven by said wheels, said roller brush being adapted to rotate with said driven rollers, and dust pans provided at both sides of said roller brush so as to cover the open bottom of said case, dust boxes defined by said dust pans and said case for collecting dust on the floor picked up by said roller brush, said each dust pan being formed at both sides thereof with bearing projections rotatably received in said side plates of said case so as to be pivotable about said bearing projections, said each bearing projection being formed with an axle mounting hole elongated in a horizontal direction so as to allow said axles received in said axle mounting holes to move only in a direction toward and away from said roller brush, whereby bringing said wheels into and out of contact with said driven rollers.

2. A manual cleaner as claimed in claim 1, further comprising a pair of bearing plates of a resilient synthetic resin mounted, one on each side of said case opposite to each other and each formed with a bearing hole at a position opposite to each other so as to receive both ends of a shaft of said roller brush, and spring means integrally formed on said bearing plates at inner portions thereof so as to bias said dust pans toward their closed position.

3. A manual cleaner as claimed in claim 2, wherein said bearing holes are elongated vertically so as to vertically movably receive both ends of said shaft of said roller brush and an elastic member is mounted in said each bearing hole so as to bias said shaft downwardly.