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US4154578A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for cleaning a carpet on location

Assignee: BANE-CLENE CORP A CORP OF IND
•
Filing: 1977-08-01
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Granted: 1979-05-15
•
Expires: 1997-08-01
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Abstract

Abstract A method and apparatus for cleaning a carpet on location without removing the carpet to a cleaning plant, the method comprising washing the carpet on location with an alkaline solution and neutralizing the alkaline residue left on the carpet after washing by blowing a spray of an acid solution under pressure into the washed carpet and removing the blown acid solution from the carpet after blowing by drawing a vacuum over the washed and blown carpet. The washing step also comprises blowing a heated spray of the alkaline solution under pressure into the carpet and removing the blown alkaline solution and loosened dirt from the carpet after blowing by drawing a vacuum over the blown carpet. The apparatus comprises a frame with wheels mounted thereon for transporting the frame to the carpet location, a first tank of alkaline solution, a second tank of acid solution, and a motor, solution pump and valved conduit arrangement for separately carrying the alkaline and acid solutions under pressure to a plurality of spray jets connected to an applicator head. A vacuum pump, vacuum return line and vacuum tank are also provided on the frame and connected to the head for removing and storing the blown alkaline and acid solutions and the loosened dirt.

Inventors

  • 👤 William F. Bane

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 21:30
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4083; A47L11/34; A47L11/4094

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 80 words
A method for cleaning a carpet on location without removing the carpet to a cleaning plant comprising: (a) washing the carpet on location with an alkaline solution; (b) and neutralizing the alkaline residue left on the carpet after said washing, said neutralizing comprising: (1) blowing a spray of an acid solution under pressure into the washed carpet; (2) and removing the blown acid solution from the carpet after said blowing by drawing a vacuum over the washed and blown carpet.
Claim 2
Independent Claim 80 words
A method for cleaning a carpet on location without removing the carpet to a cleaning plant comprising: (a) washing the carpet on location with an alkaline solution; (b) and neutralizing the alkaline residue left on the carpet after said washing, said neutralizing comprising: (1) blowing a spray of an acid solution under pressure into the washed carpet; (2) and removing the blown acid solution from the carpet after said blowing by drawing a vacuum over the washed and blown carpet.
Claim 3
Dependent Claim 24 words
The method of claim 1 wherein said blowing is with a dilute acid solution at a concentration of about at most 1% by weight.
Claim 4
Dependent Claim 47 words
The method of claim 1 wherein said washing comprises: (a) blowing a heated spray of the alkaline solution under pressure into the carpet; (b) and removing the blown alkaline solution and loosened dirt from the carpet after said blowing by drawing a vacuum over the blown carpet.
Claim 5
Dependent Claim 28 words
The method of claim 3 wherein said blowing of the acid solution is with a dilute acid solution at a concentration of about at most 1% by weight.
Claim 6
Dependent Claim 44 words
The method of claim 4 wherein said blowing of the alkaline solution is at a pressure of between about 80 psi and about 120 psi, said blowing of the acid solution being at a pressure of between about 40 psi and about 70 psi.
Claim 7
Independent Claim 89 words
A method of retarding the rate of resoiling of a carpet after the carpet has been washed on location with an alkaline solution comprising: (a) contacting a washed carpet on location with an acid solution, said contacting comprising: (1) blowing a spray of dilute acid solution under pressure into the washed carpet, the acid solution being at a concentration of about at most 1% by weight; (2) and removing the blown acid solution from the carpet after said blowing by drawing a vacuum over the washed and blown carpet.
Claim 8
Independent Claim 89 words
A method of retarding the rate of resoiling of a carpet after the carpet has been washed on location with an alkaline solution comprising: (a) contacting a washed carpet on location with an acid solution, said contacting comprising: (1) blowing a spray of dilute acid solution under pressure into the washed carpet, the acid solution being at a concentration of about at most 1% by weight; (2) and removing the blown acid solution from the carpet after said blowing by drawing a vacuum over the washed and blown carpet.
Claim 9
Dependent Claim 19 words
The method of claim 1 wherein said neutralizing is to a pH of between about 7 and about 8.
Claim 10
Dependent Claim 24 words
The method of claim 1 wherein said blowing is of a fine spray of acid solution lightly over the surface of the washed carpet.

References Cited (Backward Citations)

US3505004A Cited
US3530517A Cited
US3733176A Cited
US3617205A Cited
US3574526A Cited
US3614797A Cited
US4035148A Cited
US4095303A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-05-14 1982-11-13 1983-05-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-05-14 1986-11-13 1987-05-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-05-14 1990-11-13 1991-05-15 $7700.00 Window Closed / Lapsed

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