Patent US3962745A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3962745A Expired / Lapsed US ⏱️ 0.0 years remaining

Wall rug cleaning machine

Assignee: Individual
•
Filing: 1974-11-21
•
Granted: 1976-06-15
•
Expires: 1994-11-21
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A cleaning device for cleaning wall rugs and the like is disclosed. It comprises a cleaning head, a rigid tube and means for connecting the cleaning head to the rigid tube to permit relative movement between the head and the rigid tube. The head has a fluid discharge open end enclosure for applying cleaning fluid to a rug surface throughout a first area and an annular opening substantially surrounding the open end of the discharge enclosure through which a vacuum is applied to the rug surface throughout a second area. The spent cleaning solution passes through the annular opening to a vacuum source regardless of direction of movement of the cleaning head while it is in contact with the rug surface to be cleaned.

Inventors

  • 👤 Sydney Wellington Collier

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 22:04
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4088; A47L11/34

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 230 words
A cleaning device for wall rugs and the like comprising a head, a rigid tube, and means for connecting said head to said rigid tube which is adapted to permit relative movement of said head about an axis of said rigid tube; said head including means for applying cleaning fluid to a rug surface throughout a first area, means for applying a vacuum to a rug surface throughout a second area which substantially completely surrounds said first area, an inner wall which has a free end defining an enclosure for said means for applying cleaning fluid where said first area is defined by and within said free end of the inner wall, and an outer wall which has a free end and which surrounds said inner wall to define an annular chamber between said inner wall and said outer wall, said annular chamber having an open end where said second area is defined between the free ends of said inner and outer walls, said annular chamber being in communication with a source of vacuum, the free ends of said inner and outer walls lying substantially in the same plane where said head is free of any projections extending substantially beyond said plane in a direction away from said head so that the free ends of said inner and outer walls are adapted to contact a rug surface to be cleaned.
Claim 2
Dependent Claim 230 words
A cleaning device for wall rugs and the like comprising a head, a rigid tube, and means for connecting said head to said rigid tube which is adapted to permit relative movement of said head about an axis of said rigid tube; said head including means for applying cleaning fluid to a rug surface throughout a first area, means for applying a vacuum to a rug surface throughout a second area which substantially completely surrounds said first area, an inner wall which has a free end defining an enclosure for said means for applying cleaning fluid where said first area is defined by and within said free end of the inner wall, and an outer wall which has a free end and which surrounds said inner wall to define an annular chamber between said inner wall and said outer wall, said annular chamber having an open end where said second area is defined between the free ends of said inner and outer walls, said annular chamber being in communication with a source of vacuum, the free ends of said inner and outer walls lying substantially in the same plane where said head is free of any projections extending substantially beyond said plane in a direction away from said head so that the free ends of said inner and outer walls are adapted to contact a rug surface to be cleaned.
Claim 3
Dependent Claim 54 words
A cleaning device of claim 1 wherein said means for applying cleaning fluid comprises at least one fluid discharge nozzle positioned within said enclosure and directed to discharge cleaning fluid towards the free end of said inner wall, said at least one discharge nozzle being in communication with a source of pressurized cleaning fluid.
Claim 4
Dependent Claim 27 words
A cleaning device as claimed in claim 2 wherein means is provided to control the flow of cleaning fluid to said at least one fluid discharge nozzle.

References Cited (Backward Citations)

US2270579A Cited
US2909800A Cited
GB892658A Cited
US3616482A Cited
US3705437A Cited
US3747155A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-06-15 1979-12-15 1980-06-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-06-15 1983-12-15 1984-06-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-06-15 1987-12-15 1988-06-15 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag