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US 2021/0267428 A1Published application
Apparatus for cleaning a surface
AssigneeBISSELL Inc.
InventorsJeffrey A. Scholten, Jacob Resch, Jacob S. Boles, Bryan Lee Villaroman, Victoria J. Royale, Timothy R. Lambrix
Life of this patent
Estimating the term…
Abstract
An apparatus (10) for cleaning a surface includes a liquid delivery system (12) for storing cleaning liquid and delivering the cleaning liquid to the surface to be cleaned, a fluid recovery system (14) and a control system. The control system includes a controller (122) that is coupled to a fluid level sensing assembly (98). Methods of operating the same include sensing foam or liquid with the fluid level sensing assembly (98).
Claims31
A surface cleaning device, comprising:
- a base adapted for contacting a surface of a surrounding environment to be cleaned;
- a suction source;
- a suction nozzle assembly provided on the base and defining a suction nozzle in fluid communication with the suction source;
- a fluid delivery and recovery system, comprising:
- a fluid supply tank adapted to hold a supply of fluid;
- a fluid dispenser in fluid communication with the fluid supply tank;
- and
- a recovery tank in fluid communication with the suction nozzle assembly;
- and
- a fluid level sensing assembly, comprising:
- at least one probe;
- and
- a controller communicatively coupled to the at least one probe and configured to electronically control the at least one probe and configured to detect a level of fluid in at least one of the fluid supply tank or the recovery tank to define a presence of liquid.
10 more elements
25-49. (canceled)
Dependencies are inferred from the claim text.