Steam cleaning apparatus

• US 6,289,551 B1
• Filed: 07/23/1999
• Issued: 09/18/2001
• Est. Priority Date: 11/26/1997
• Status: Expired due to Fees

• Current Assignee: De'Longhi Appliances SRL (De'Longhi Holding S.A.)
• Original Assignee: Simac Vetrella SpA
• Inventors: Basile, Salvatore
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US09/355,107
• Time in Patent Office: 788 Days
• Field of Search: 153/20, 153/19
• US Class Current: 15/320
• CPC Class Codes: A47L 11/34 Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
• CPC Class Codes: A47L 11/4061 Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated
• CPC Class Codes: A47L 11/4091 Storing or parking devices, arrangements therefor; Means allowing transport of the machine when it is not being used

Abstract

Steam cleaning apparatus for plane surfaces, comprising a closed case containing structure (11) with a lower face (11b) substantially flat suitable to cooperate with the plane surface to be cleaned and an upper face (11a) suitable to cooperate with movement and command controls (12), the containing structure (11) including inside itself structure (18) to generate steam under pressure comprising a pump (19) and an instantaneous generator (20) equipped with a rapid heater (21), the containing structure (11) cooperating with a tank (22) containing water at room temperature, the lower face (11b) of the containing structure (11) including steam delivery holes, the delivery holes (30) defining on the lower face (11b) of the containing structure (11) at least two distinct delivery zones, respectively forward and central, which can be selected by the user by means of a selector (32), the tank (22) containing water being able to be temporally removed from the containing structure (11) so that refilling operations can be carried out.

Claims

1. Steam cleaning apparatus for plane surfaces, comprising

a containing structure having a substantially flat lower face suitable to cooperate with the plane surface to be cleaned and an upper face, the lower face of the containing structure including steam delivery holes, the delivery holes defining on the lower face of the containing structure at least two distinct delivery zones, respectively forward and central;

a tank for containing liquid at room temperature, the tank being removably mounted on the containing structure so that the tank can be temporally removed from the containing structure so that refilling operations can be carried out;

a handle attached to the containing structure;

an instantaneous steam generator having a rapid heater for generating steam;

a pump for pumping liquid from the tank to the instantaneous steam generator;

a conduit provided between the instantaneous steam generator and each of said at least two distinct deliver zones; and

a valve for selecting at least one of the at least two delivery zones for delivering steam from the instantaneous steam generator.

2. Cleaning apparatus as in claim 1, characterised in that the valve is adjustable to select among a first condition wherein steam is supplied only to the forward zone, a second condition wherein steam is supplied only to the central zone, and a third condition wherein steam is supplied to both the forward and central zones.

3. Cleaning apparatus as in claim 2, characterised in that the forward zone includes delivery holes cooperating with lateral shapings arranged on the front part of the containing structure.

4. Cleaning apparatus as in claim 2, characterised in that the central zone includes delivery holes arranged on at least two rows covering substantially the width of the face.

5. Cleaning apparatus as in claim 1, characterised in that the containing structure, in correspondence with at least part of its perimeter, includes rapid gripping means to grip the ends of cleaning rags or cloths.

6. Cleaning apparatus as in claim 5, characterised in that the rapid gripping means comprises elastic fins including at least a tooth facing towards the containing structure and defining a seating to contain and grip a cleaning rag, or cloth.

7. Cleaning apparatus as in claim 1, characterised in that the instantaneous steam generator is made in a single piece and can be removed from the containing structure.

8. Cleaning apparatus as in claim 1, characterised in that the tank includes feeder means to be rapidly connected with the pump.

9. Cleaning apparatus as in claim 1, characterised in that the handle is associated with the containing structure by means of articulated joints.

10. Cleaning apparatus as in claim 9, characterised in that the handle includes a first inactive position, a second position wherein the rapid heating means are switched on, and a third position wherein the pump is activated.

11. Cleaning apparatus as in claim 1, characterised in that at the outlet of the instantaneous steam generator there is a pressure switch functionally connected to the rapid heater.