Patent US3688339A successfully refreshed from Google Patents.
US3688339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine driven cleaning tool
Assignee: Individual
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Filing: 1971-02-04
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Granted: 1972-09-05
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Expires: 1991-02-04
Abstract
Abstract In a cleaning tool having a nozzle provided with a brush rotated by an air turbine to remove direct from surfaces, the body sections of the tool cooperate to form dirty and clean air passageways, support the turbine brush drive and enclose the latter in the nozzle to prevent contact with the dirty air stream.
Inventors
- 👤 Conway Vincent
- 👤 Siegfried Garbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0405; A47L9/0416; A47L9/0455
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
263 words
An air operated surface cleaning tool, comprising: an upper body section having an inner and an outer pair of bearing receiving recesses; a lower body section having a pair of bearing receiving recesses and secured to said upper body section to form the outer body of said surface cleaning tool; said body having a forward portion and a rear portion and said forward portion providing a nozzle chamber and an air inlet and said rear portion providing an air outlet; a pair of surface engaging brushes in axial alignment positioned within said nozzle chamber; brush bearing means located at the outer end of each of said brushes, the lower portion of said brush bearing means being positioned in said lower body section bearing receiving recesses and the upper portion of said brush bearing means being positioned in said upper body section outer pair of bearing receivinG recesses; a partition having a pair of bearing receiving recesses and said partition being located between said upper body section and said lower body section; said partition and said lower body section providing a dirty air passage connecting said air outlet and said nozzle chamber; a shaft intermediate and in axial alignment with said brushes and in driving engagement with the inner ends thereof; means for driving said shaft; and axially spaced shaft bearing means rotatably supporting said shaft, the lower portion of said shaft bearing means being positioned in said partition bearing receiving means and the upper portion of said shaft bearing means being positioned in said upper body section inner pair of bearing receiving recesses.
Claim 2
Dependent Claim
263 words
An air operated surface cleaning tool, comprising: an upper body section having an inner and an outer pair of bearing receiving recesses; a lower body section having a pair of bearing receiving recesses and secured to said upper body section to form the outer body of said surface cleaning tool; said body having a forward portion and a rear portion and said forward portion providing a nozzle chamber and an air inlet and said rear portion providing an air outlet; a pair of surface engaging brushes in axial alignment positioned within said nozzle chamber; brush bearing means located at the outer end of each of said brushes, the lower portion of said brush bearing means being positioned in said lower body section bearing receiving recesses and the upper portion of said brush bearing means being positioned in said upper body section outer pair of bearing receivinG recesses; a partition having a pair of bearing receiving recesses and said partition being located between said upper body section and said lower body section; said partition and said lower body section providing a dirty air passage connecting said air outlet and said nozzle chamber; a shaft intermediate and in axial alignment with said brushes and in driving engagement with the inner ends thereof; means for driving said shaft; and axially spaced shaft bearing means rotatably supporting said shaft, the lower portion of said shaft bearing means being positioned in said partition bearing receiving means and the upper portion of said shaft bearing means being positioned in said upper body section inner pair of bearing receiving recesses.
Claim 3
Dependent Claim
94 words
An air operated surface cleaning tool as described in claim 1, wherein said means for driving said shaft includes: a ring gear rigidly affixed to said shaft; a pinion which drivingly engages said ring gear; a second shaft one end of which is affixed to said pinion; a housing which supports said second shaft; a rotor affixed to the other end of said second shaft; a stator affixed to said housing at the end adjacent said rotor; and said upper body section providing a clean air inlet which supplies air for rotating said rotor.
Claim 4
Dependent Claim
79 words
An air operated surface cleaning tool as described in claim 2, wherein said upper body section and said partition provide: an enclosure for said brush driving shaft, said ring gear, and said pinion and said enclosure is located in said nozzle chamber and said enclosure divides said nozzle chamber into two separate portions wherein air flowing into one of said portions combines with air flowing into the other of said portions only when said air reaches said air outlet.
Claim 5
Dependent Claim
92 words
An air operated surface cleaning tool as described in claim 3, wherein said second shaft housing and said stator are clamped between recesses in said partition and said upper body section to rigidly support said drive means for said brush driving shaft; and wherein said partition and said upper body section cooperate to provide a clean air passage separate from said dirty air passage, said clean air passage being located between said clean air inlet and said rotor and said clean air combining with said dirty air after passing through said rotor.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |