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US5839159A Expired / Lapsed US ⏱️ 0.0 years remaining

Wet extractor system

Assignee: Electrolux Home Care Products Inc
•
Filing: 1997-09-08
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Granted: 1998-11-24
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Expires: 2017-09-08
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Abstract

Abstract An upright wet extractor includes a base assembly, a manipulative handle pivotally attached to the base assembly, and a motor driven agitator brush. A cleaning solution dispensing tank is removably attached to the handle assembly by a pivotable latch member. In a floor cleaning mode, cleaning solution is selectively supplied by gravity from the dispensing tank to a spray nozzle through a supply tube controlled by a pinch valve. In an attachment hose cleaning mode, cleaning solution is selectively supplied by a motor driven pump from the dispensing tank to an attachment hose spray nozzle controlled by a trigger valve. A suction motor/fan assembly is carried by the base assembly which is selectively in fluid communication with a floor nozzle in the floor mode and a hose nozzle in the attachment mode. Conversion between floor mode and attachment mode is carried out by manual operation of a knob of a multi-functional valve/switch assembly. The valve switch assembly includes a valve member which diverts the flow of working air and a micro-switch which appropriately activates and deactivates the agitator brush motor and the pump motor. A recovery tank assembly which both separates liquid from air and stores the recovered liquid is removably secured below the suction pump and can be removed through the rear end of the base assembly. The suction motor/fan assembly includes a cooling fan which draws cooling air over both the pump motor and the motor of the suction motor/fan assembly.

Inventors

  • 👤 Richard Karr
  • 👤 David Erickson
  • 👤 Kevin Genge
  • 👤 William Hanold
  • 👤 Gregory Luebbering
  • 👤 William Phelan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 19:29
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4052; A47L11/4055; A47L11/29; A47L11/30; A47L11/34; A47L11/4002; A47L11/4008; A47L11/4011; A47L11/4013; A47L11/4025; A47L11/4036; A47L11/4041; A47L11/4044; A47L11/4063; A47L11/4069; A47L11/4075; A47L11/408; A47L11/4083; A47L11/4088

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 83 words
A wet extractor comprising: a base assembly forming an internal cavity; a suction fan attached to said base assembly above said cavity, said suction fan having an inlet; a hood assembly secured over said base assembly and defining a floor suction nozzle having an outlet; and a liquid recovery tank slidably received in said cavity and having an inlet in fluid communication with said outlet of said floor suction nozzle and an outlet in fluid communication with said inlet of said suction fan.
Claim 2
Dependent Claim 83 words
A wet extractor comprising: a base assembly forming an internal cavity; a suction fan attached to said base assembly above said cavity, said suction fan having an inlet; a hood assembly secured over said base assembly and defining a floor suction nozzle having an outlet; and a liquid recovery tank slidably received in said cavity and having an inlet in fluid communication with said outlet of said floor suction nozzle and an outlet in fluid communication with said inlet of said suction fan.
Claim 3
Dependent Claim 16 words
The wet extractor according to claim 1, wherein said wet extractor is an upright wet extractor.
Claim 4
Dependent Claim 41 words
The wet extractor according to claim 1, wherein said base assembly has an opening to said cavity at a rear end of said base assembly such that said liquid recovery tank is removable from said base assembly in a rearward direction.
Claim 5
Dependent Claim 107 words
A wet extractor comprising: a base assembly forming an internal cavity; a suction fan attached to said base assembly above said cavity, said suction fan having an inlet; a floor suction nozzle having an outlet; and a liquid recovery tank slidably received in said cavity and having an inlet in fluid communication with said outlet of said floor suction nozzle and an outlet in fluid communication with said inlet of said suction fan, wherein said base assembly has an opening to said cavity at a rear end of said base assembly such that said liquid recovery tank is removable from said base assembly in a rearward direction.
Claim 6
Dependent Claim 107 words
A wet extractor comprising: a base assembly forming an internal cavity; a suction fan attached to said base assembly above said cavity, said suction fan having an inlet; a floor suction nozzle having an outlet; and a liquid recovery tank slidably received in said cavity and having an inlet in fluid communication with said outlet of said floor suction nozzle and an outlet in fluid communication with said inlet of said suction fan, wherein said base assembly has an opening to said cavity at a rear end of said base assembly such that said liquid recovery tank is removable from said base assembly in a rearward direction.
Claim 7
Dependent Claim 16 words
A wet extractor according to claim 4, wherein said wet extractor is an upright wet extractor.
Claim 8
Dependent Claim 100 words
A wet extractor comprising: a base assembly comprising a base frame and a motor support, said base frame and motor support cooperating to define an internal cavity; a suction fan attached to said motor support relatively above said cavity, said suction fan having an inlet; a hood assembly secured over said base assembly and defining a floor suction nozzle having an outlet; and a liquid recovery tank slidably received in said cavity and having an inlet in fluid communication with said outlet of said floor suction nozzle and an outlet in fluid communication with said inlet of said suction fan.
Claim 9
Dependent Claim 100 words
A wet extractor comprising: a base assembly comprising a base frame and a motor support, said base frame and motor support cooperating to define an internal cavity; a suction fan attached to said motor support relatively above said cavity, said suction fan having an inlet; a hood assembly secured over said base assembly and defining a floor suction nozzle having an outlet; and a liquid recovery tank slidably received in said cavity and having an inlet in fluid communication with said outlet of said floor suction nozzle and an outlet in fluid communication with said inlet of said suction fan.
Claim 10
Dependent Claim 16 words
A wet extractor according to claim 6, wherein said wet extractor is an upright wet extractor.
Claim 11
Dependent Claim 41 words
A wet extractor according to claim 6, wherein said base assembly has an opening to said cavity at a rear end of said base assembly such that said liquid recovery tank is removable from said base assembly in a rearward direction.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2001-11-23 2002-05-25 2002-11-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2005-11-23 2006-05-25 2006-11-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2009-11-23 2010-05-25 2010-11-24 $7700.00 Window Closed / Lapsed

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