Floor polisher with a dust collecting device

• US 4,939,811 A
• Filed: 12/12/1988
• Issued: 07/10/1990
• Est. Priority Date: 12/14/1987
• Status: Expired due to Fees

• Current Assignee: Amano Corporation
• Original Assignee: Amano Corporation
• Inventors: Inoue, Hideo, Matunaga, Akira, Arai, Tetu, Ikezawa, Ken
• Primary Examiner(s): Moore, Chris K.
• Application Number:
  US07/284,059
• Time in Patent Office: 575 Days
• Field of Search: 15/385, 15/349
• US Class Current: 15/385
• CPC Class Codes: A47L 11/164 Parts or details of the brushing tools
• CPC Class Codes: A47L 11/2065 having only one disc brush
• CPC Class Codes: A47L 11/4038 Disk shaped surface treating tools
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4077 Skirts or splash guards
• CPC Class Codes: A47L 11/4094 Accessories to be used in combination with conventional vacuum-cleaning devices

Abstract

A floor polisher with a dust collecting device has a buffing pad which is rotated at a high speed by a motor, a circular cover member and a skirt for covering an upper surface of the buffing pad, and a dust collecting device for exerting a collecting function thereof on an internal space surrounded by the cover member and the skirt. The floor polisher is characterized in that the cover member and the skirt are partly extended on a tangential line to form a guide chamber for a dust-containing air current, that the guide chamber is provided at an inlet port thereof with a guide wall opposite inner wall surfaces of the cover member and the skirt extended on the tangential line and an inclined plate which is inclined toward a floor, and that the guide chamber is provided at the outer end thereof with an outlet port communicating with the dust collecting device.

Claims

1. A floor polisher with a dust collecting device, comprising:

a disc-shaped buffing pad rotatable about a center axis;

a motor connected to said buffing pad for rotating said buffing pad at a high speed;

a circular cover member spaced above and covering the upper surface of said buffing pad;

a skirt depending from the peripheral edge of said cover member to the level of the bottom of said buffing pad and circumferentially encircling a space below said cover member and within said skirt and having a dust discharging opening therein;

a dust collecting device for exerting a suction on said space; and

a guide chamber extending outwardly of said skirt from said dust discharging opening and having a radially outer wall extending from said skirt on a line tangent to said skirt, a top wall extending from said cover, a radially inner wall spaced inwardly from and parallel to said outer wall, and an inclined bottom wall inclined upwardly from the position of the lower edge of said skirt at said dust discharging opening and in a direction parallel with said inner and outer walls, said guide chamber having an outlet port at the end remote from said dust discharging opening and communicating with said dust collecting device.