Patent US2625240A successfully refreshed from Google Patents.
Patent US4381157A successfully refreshed from Google Patents.
US4381157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rug cleaner
Assignee: MILLIKEN RESEARCH Corp A CORP OF SC
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Filing: 1978-10-30
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Granted: 1983-04-26
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Expires: 1998-10-30
Abstract
Abstract Lightweight, simple rug cleaner for residential use which uses a powdered cleaning composition for the cleaning of carpets. The cleaning composition comes in a throw-away, disposable container which is inserted into the rug cleaner for use.
Inventors
- 👤 Robert S. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:21
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/32; A47L11/4036; A47L11/4075
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A device for applying a substantially dry cleaning powder on a surface to be cleaned, such as a carpet comprising: a hollow container having a first section and a second section at an angle to said first section, a cylindrical powder transfer element rotatably mounted in said hollow container, said first section having a wall member which is substantially perpendicular to the surface to be cleaned when such surface is contacted by said cylindrical powder transfer element, a brush member mounted on said wall member having the bristles thereof substantially perpendicular thereto, means mounting a disposable powder container in said second section in communication with said cylindrical powder transfer element to supply cleaning powder thereto and a handle means connected to the outside of said hollow container to aid in moving said hollow container over the surface to be cleaned.
Claim 2
Independent Claim
140 words
A device for applying a substantially dry cleaning powder on a surface to be cleaned, such as a carpet comprising: a hollow container having a first section and a second section at an angle to said first section, a cylindrical powder transfer element rotatably mounted in said hollow container, said first section having a wall member which is substantially perpendicular to the surface to be cleaned when such surface is contacted by said cylindrical powder transfer element, a brush member mounted on said wall member having the bristles thereof substantially perpendicular thereto, means mounting a disposable powder container in said second section in communication with said cylindrical powder transfer element to supply cleaning powder thereto and a handle means connected to the outside of said hollow container to aid in moving said hollow container over the surface to be cleaned.
Claim 3
Dependent Claim
20 words
The device of claim 1 wherein said cylindrical powder transfer element is a cylinder with a rough or porous surface.
Claim 4
Dependent Claim
18 words
The device of claim 1 wherein the surface of said cylindrical powder transfer element is a reticulated foam.
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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) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |