Apparatus for cleaning floors, carpets and the like

• US 4,218,805 A
• Filed: 11/03/1978
• Issued: 08/26/1980
• Est. Priority Date: 11/03/1978
• Status: Expired due to Term

• Current Assignee: Vax Appliances, Inc.
• Original Assignee: VAX Appliances Limited
• Inventors: Brazier, Alan J.
• Primary Examiner(s): Moore, Christopher K.
• Application Number:
  US05/957,408
• Time in Patent Office: 662 Days
• Field of Search: 15/320, 15/321, 15/353, 15/328, 55/216, 55/447, 55/462, 55/DIG. 3
• US Class Current: 15/321
• CPC Class Codes: A47L 7/0019 Details of the casing
• CPC Class Codes: A47L 7/0028 Security means, e.g. float valves or level switches for preventing overflow
• CPC Class Codes: A47L 7/0038 with means for emptying the tanks
• CPC Class Codes: A47L 7/0042 Gaskets; Sealing means
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

Suction cleaning apparatus comprising a container adapted for the collection of a liquid is provided with an inlet for connection to a suction head adapted for picking up liquid whereby incoming air flow is directed substantially radially inwardly relative to the container and impinges directly on an inner wall whereby it is spread in substantially equal and opposite streams around the interior of the container. The inner wall surrounds a suction inlet whereby suction is applied to the interior of the container and the arrangement minimises the tendency for a vortex to be generated in air flow towards such suction inlet, thereby reducing the tendency of foam to be produced on the surface of the collected liquid within the container.

Claims

1. Apparatus for use in suction cleaning devices or the like comprising a container adapted for the collection of a liquid and including:

a closed bottom wall;

a lateral side wall which is circular in plan;

inlet means for connection with a suction head adapted for picking up liquid, said inlet means being disposed in the lateral side wall of the container for directing incoming air flow substantially radially inwardly;

suction inlet means for connection with a source of suction;

reservoir means for cleaning liquid in the form of an annular trough supported within the container;

means for delivering cleaning liquid from the reservoir means to suction head connected to said inlet means; and

deflector means disposed between said inlet means and said suction inlet means and surrounding the latter, said deflector means comprising an outer part of said annular trough which defines an inner wall of circular form spaced inwardly from said side wall with a lower edge spaced above the bottom wall of the container.

2. Apparatus for use in suction cleaning apparatus or the like as recited in claim 1 wherein the trough is provided at its underside with a downwardly extending circular rib.

3. Apparatus for use in suction cleaning apparatus or the like as recited in claim 1 wherein said trough includes a generally conical inner part leading up to the suction inlet means.

4. Apparatus for use in suction cleaning apparatus or the like as recited in claim 3 wherein shut-off valve means is provided in register with said suction inlet means to close such suction inlet means in response to a predetermined level of the contents of the container.