Suction hood for wet floor cleaning machines

• US 5,970,571 A
• Filed: 08/18/1997
• Issued: 10/26/1999
• Est. Priority Date: 04/11/1996
• Status: Expired due to Term

• Current Assignee: Nilfisk Schwamborn GmbH
• Original Assignee: Nilfisk Schwamborn GmbH
• Inventors: Ochss, Dieter
• Primary Examiner(s): Moore, Chris K.
• Application Number:
  US08/849,590
• Time in Patent Office: 799 Days
• Field of Search: 15/359, 15/320, 15/401
• US Class Current: 15/320
• CPC Class Codes: A47L 11/302 having rotary tools
• CPC Class Codes: A47L 11/4036 Parts or details of the surface treating tools
• CPC Class Codes: A47L 11/4041 Roll shaped surface treating tools
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4061 Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated

Abstract

In a suction hood (2) for a wet floor cleaning machine (1) in which a motor-driven scrubbing roller (3) rotates, accompanied by application of water, on an axle (free-arm axle) which is clamped in on only one side within the suction hood (2) which overlaps this axle (7) at both ends, this suction hood (2) is guided so as to be displaceable axially relative to the scrubbing roller (3).

Claims

1. A suction hood in combination with a wet floor cleaning machine, comprising a free-arm axle clamped at only one end thereof to the wet floor cleaning machine, and a motor-driven scrubbing roller mounted so as to rotate on the free-arm axle within the suction hood, wherein the suction hood overlaps the axle at both ends thereof, further comprising means for applying water to the scrubbing roller, and guide means for axially guiding the suction hood relative to the scrubbing roller.

2. The suction hood according to claim 1, wherein the guide means is comprised of a bar linkage comprising a first linkage bar connected to the suction hood and a second linkage bar connected pivotally at one end thereof to the first linkage bar and at another end thereof to the wet floor cleaning machine, further comprising a return spring attached to the wet floor cleaning machine and the second linkage bar.

3. The suction hood according to claim 2, wherein the bar linkage is a parallelogram bar linkage.

4. The suction hood according to claim 2, wherein the linkage bars and the return spring are mounted at an underside of the wet floor cleaning machine.

5. The suction hood according to claim 1, wherein the wet floor cleaning machine has a housing, and wherein the guide means for axially displacing the suction hood are mounted at least partially within an interior of the housing.