US4646380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary cleaning member in cleaner
Assignee: HUKUBA KOGO (ALSO TRADING AS HUKUBA KOGYO Co LTD)CHIBA-KEN JAPAN A CORP OF JAPAN KK
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Filing: 1985-07-19
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Granted: 1987-03-03
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Expires: 2005-07-19
Abstract
Abstract A rotary cleaning member comprises a revolving shaft installed rotatably inside a main body casing, and a plurality of flexible blades provided with a number of projections on the surface thereof abutting upon the surface of a floor, these blades extending radially from the circumference of the revolving shaft one another in a cleaner wherein the rotary cleaning member installed in the main body casing is rotated to spring up dust or the like on the floor, or convey the dust or the like sprung up by means of said rotary cleaning member to a prescribed position for receiving the dust or the like in combination with suction.
Inventors
- 👤 Kiyoshi Kobayashi
- 👤 Toshihiro Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:11
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4063; A47L11/4069; A47L11/32; A47L11/33; A47L11/4036; A47L11/4041
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
In a cleaner having a rotary cleaning member comprising a shaft rotatably mounted in a main body casing, means for rotating said shaft, a plurality of flexible blades mounted radially on the surface of said shaft and adaptable to project through an opening in the underside of said casing to contact a surface to be cleaned, the improvement which comprises a plurality of projections on said blades extending substantially perpendicular thereto, whereby said blades flex when in contact with said surface to be cleaned to apply said projections to said surface to be cleaned.
Claim 2
Dependent Claim
94 words
In a cleaner having a rotary cleaning member comprising a shaft rotatably mounted in a main body casing, means for rotating said shaft, a plurality of flexible blades mounted radially on the surface of said shaft and adaptable to project through an opening in the underside of said casing to contact a surface to be cleaned, the improvement which comprises a plurality of projections on said blades extending substantially perpendicular thereto, whereby said blades flex when in contact with said surface to be cleaned to apply said projections to said surface to be cleaned.
Claim 3
Dependent Claim
28 words
The cleaner of claim 1 wherein each of said blades is spirally mounted on said surface of said shaft and said blades are substantially parallel to each other.
Claim 4
Dependent Claim
28 words
The cleaner of claims 1 or 2 wherein there is a plurality of windows extending through each of said blades and located adjacent said surface of said shaft.
Claim 5
Dependent Claim
25 words
The cleaner of claim 3 wherein the portion of each of said blades remote from said surface of said shaft defines a saw tooth shape.
Claim 6
Dependent Claim
27 words
The cleaner of claims 1 or 2 wherein the portion of each of said blades remote from said surface of said shaft defines a saw tooth shape.
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) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |