US4063961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cleaning carpet
Assignee: Individual
•
Filing: 1976-04-26
•
Granted: 1977-12-20
•
Expires: 1996-04-26
Abstract
Abstract A method and apparatus for cleaning carpet. The pile of the carpet is first lifted, opened and agitated by stiff rotating brushes and beater bars, separating the foreign matter therein from the pile and bringing the matter to the surface of the carpet. The carpet is then vacuumed removing the separated matter therefrom. A film of cleaning agent is then sprayed through a hand-held wand over the carpet encapsulating the carpet fibers. The wand communicates with a portable pressurized supply of cleaning agent. After a short setting, the carpet is scrubbed with counter-rotating or rotary brushes. The agent is then allowed to dry and the residue removed with a vacuum.
Inventors
- 👤 Lawrence F. Howard
- 👤 James W. Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:19
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/34; A47L13/00; A47L13/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
A process for cleaning shag type carpet comprising the sequential steps of lifting, opening and agitating the carpet pile with counter-rotating brushes, beating and vacuuming the carpet to remove over 95% of the foreign matter therefrom, applying a mist of cleaning agent over the carpet to encapsulate the fibers thereof, allowing the cleaning agent to remain in a quiescent state for a period of at least 2 minutes, agitating the carpet pile with the cleaning agent thereon with counter-rotating brushes, allowing the carpet to dry and vacuuming the carpet.
Claim 2
Dependent Claim
89 words
A process for cleaning shag type carpet comprising the sequential steps of lifting, opening and agitating the carpet pile with counter-rotating brushes, beating and vacuuming the carpet to remove over 95% of the foreign matter therefrom, applying a mist of cleaning agent over the carpet to encapsulate the fibers thereof, allowing the cleaning agent to remain in a quiescent state for a period of at least 2 minutes, agitating the carpet pile with the cleaning agent thereon with counter-rotating brushes, allowing the carpet to dry and vacuuming the carpet.
Claim 3
Dependent Claim
28 words
The process of claim 1 further including the step of scrubbing the carpet with yarn pad after said step of agitating the carpet with the cleaning agent thereon.
Claim 4
Dependent Claim
43 words
The process of claim 1 further including the step of brushing the carpet to erect the carpet pile after said step of agitating the carpet with the cleaning agent thereon and prior to the step of scrubbing the carpet with a yarn pad.
Claim 5
Dependent Claim
29 words
The process of claim 3 including the additional steps of brushing the carpet to erect the carpet pile after said step of scrubbing the carpet with a yarn pad.
Claim 6
Dependent Claim
95 words
A process for cleaning carpet with a profile having about 1/4 to 3/8 inch high fibers comprising the sequential steps of lifting, opening and agitating the carpet pile with an oscillatory brush and vacuuming the carpet to remove over 95% of the foreign matter therefrom, applying a mist of cleaning agent over the carpet fibers, allowing the cleaning agent to remain in a quiescent state for a period of at lease two minutes, agitating the carpet pile with the cleaning agent thereon with a rotary brush, allowing the carpet to dry and vacuuming the carpet.
Claim 7
Dependent Claim
95 words
A process for cleaning carpet with a profile having about 1/4 to 3/8 inch high fibers comprising the sequential steps of lifting, opening and agitating the carpet pile with an oscillatory brush and vacuuming the carpet to remove over 95% of the foreign matter therefrom, applying a mist of cleaning agent over the carpet fibers, allowing the cleaning agent to remain in a quiescent state for a period of at lease two minutes, agitating the carpet pile with the cleaning agent thereon with a rotary brush, allowing the carpet to dry and vacuuming the carpet.
Claim 8
Dependent Claim
29 words
The process of claim 5 further including the step of scrubbing the carpet with a yarn pad after said step of agitating the carpet with the cleaning agent thereon.
Claim 9
Dependent Claim
87 words
A process for cleaning high-low carpets comprising the sequential steps of lifting, opening and agitating the carpet pile with counter-rotating brushes and vacuuming the carpet to remove over 95% of the foreign matter therefrom, applying a mist of cleaning agent over the carpet to encapsulate the fibers thereof, allowing the cleaning agent to remain in a quiescent state for a period of at least two minutes, agitating the carpet pile with the cleaning agent thereon with rotating brushes, allowing the carpet to dry and vacuuming the carpet.
Claim 10
Dependent Claim
87 words
A process for cleaning high-low carpets comprising the sequential steps of lifting, opening and agitating the carpet pile with counter-rotating brushes and vacuuming the carpet to remove over 95% of the foreign matter therefrom, applying a mist of cleaning agent over the carpet to encapsulate the fibers thereof, allowing the cleaning agent to remain in a quiescent state for a period of at least two minutes, agitating the carpet pile with the cleaning agent thereon with rotating brushes, allowing the carpet to dry and vacuuming the carpet.
Claim 11
Dependent Claim
29 words
The process of claim 7 further including the step of scrubbing the carpet with a yarn pad after said step of agitating the carpet with the cleaning agent thereon.
Claim 12
Dependent Claim
29 words
The process of claim 8 further including the step of brushing the carpet to erect the carpet pile after said step of scrubbing the carpet with a yarn pad.
References Cited (Backward Citations)
US262352A
Cited
US1410913A
Cited
US2189209A
Cited
US2344247A
Cited
US2514142A
Cited
US2842788A
Cited
US3655444A
Cited
US3615820A
Cited
US3615819A
Cited
US3827857A
Cited
US3728075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |