US4245371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet scrubber
Assignee: Milliken Research Corp
•
Filing: 1979-07-16
•
Granted: 1981-01-20
•
Expires: 1999-07-16
Abstract
Abstract An improved carpet cleaning machine which incorporates controls to allow it to be employed as either a carpet scrubber or a vacuum cleaner. The carpet cleaning machine incorporates a novel handle arrangement which can be collapsed for storage and handling.
Inventors
- 👤 Larry S. Satterfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:22
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4041; A47L11/34; A47L11/4013; A47L7/00; A47L7/008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
A carpet cleaning apparatus comprising: a frame, a housing mounted on said frame, means forming a powder dispensing chamber, a brush chamber and a vacuum chamber in said housing, a powder dispensing roll in said dispensing chamber, a collection bag in said vacuum chamber, brush means in said brush chamber, a single drive means driving said powder dispensing roll and said brush means, and handle means to move said carpet cleaning apparatus over an area to be cleaned, said apparatus including a conversion means to deactivate the powder dispensing roll and to allow said apparatus to perform as a vacuum cleaner.
Claim 2
Dependent Claim
101 words
A carpet cleaning apparatus comprising: a frame, a housing mounted on said frame, means forming a powder dispensing chamber, a brush chamber and a vacuum chamber in said housing, a powder dispensing roll in said dispensing chamber, a collection bag in said vacuum chamber, brush means in said brush chamber, a single drive means driving said powder dispensing roll and said brush means, and handle means to move said carpet cleaning apparatus over an area to be cleaned, said apparatus including a conversion means to deactivate the powder dispensing roll and to allow said apparatus to perform as a vacuum cleaner.
Claim 3
Dependent Claim
36 words
The apparatus of claim 1 wherein said conversion means includes an air vent in said housing wall and a shutter means to close off said vent when said apparatus is being operated as a vacuum cleaner.
Claim 4
Dependent Claim
114 words
A carpet cleaning apparatus comprising: a frame, a housing mounted on said frame, means forming a powder dispensing chamber, a brush chamber and a vacuum chamber in said housing, a powder dispensing roll in said dispensing chamber, a collection bag in said vacuum chamber, brush means in said brush chamber, a single drive means driving said powder dispensing roll and said brush means, and handle means to move said carpet cleaning apparatus over an area to be cleaned, said drive means including a linkage to transmit motion to said dispensing roll and a means to control the power transmitted to said dispensing roll, said means to control being operably associated with said handle means.
Claim 5
Dependent Claim
114 words
A carpet cleaning apparatus comprising: a frame, a housing mounted on said frame, means forming a powder dispensing chamber, a brush chamber and a vacuum chamber in said housing, a powder dispensing roll in said dispensing chamber, a collection bag in said vacuum chamber, brush means in said brush chamber, a single drive means driving said powder dispensing roll and said brush means, and handle means to move said carpet cleaning apparatus over an area to be cleaned, said drive means including a linkage to transmit motion to said dispensing roll and a means to control the power transmitted to said dispensing roll, said means to control being operably associated with said handle means.
Claim 6
Dependent Claim
40 words
The apparatus of claim 3 wherein said means to control includes a means to adjust the action of said control means to adjust the position of said linkage to vary the amount of powder dispensed by said powder dispensing roll.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |