US4815157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor cleaner
Assignee: KABUSHIKI KISHA HOKY (ALSO TRADING AS HOKY CORPORATION) 498 KOMAGIDAI NAGAREYAMA-SHI CHIBA 270-01 JAPAN
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Filing: 1987-10-28
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Granted: 1989-03-28
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Expires: 2007-10-28
Abstract
Abstract A floor cleaner of the present invention has wheels provided on a main body casing which is journaled to a proximal portion of an operation handle, a rotary cleaning body on each side end portion of which is mounted a driven roller which is freely engageable by a respective one of the wheels, individual rotatable auxiliary rotary cleaning bodies located at both side end portions of the main body casing, respectively, and ducts communicating one of the dust collecting chambers, the chambers having dust intakes that respectively face the rotary cleaning body.
Inventors
- 👤 Toshihiro Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:57
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4072; A47L11/32; A47L11/33; A47L11/4013; A47L11/4036; A47L11/4041; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
244 words
A floor cleaner for sweeping up dust from a floor, said cleaner comprising: a main casing having a front portion, a rear portion, and opposite sides extending from said front to said rear portions; a handle to which said main casing is rotatably mounted; a rotary cleaning body rotatably mounted to said main casing and disposed therein between said front and said rear portions, dust collecting chambers defined at the front and the rear portions of said casing, respectively, each of said dust collecting chamber having an opening confronting said rotary cleaning body; driven rollers disposed adjacent the opposite sides of said casing at opposite end portions of said rotary cleaning body, respectively, said driven rollers integral with said rotary cleaning body so as to rotate therewith; rotatable drive wheels mounted to said casing and disposed at the opposite sides of said casing adjacent said driven rollers for supporting said casing on a floor, said drive wheels engageable with said driven rollers for rotating said driven rollers; and individual auxiliary rotary cleaning bodies disposed adjacent the opposite sides of said casing at said front portion thereof, respectively, for sweeping up dust from a floor which lies under said main casing adjacent said sides thereof when the cleaner is moved over the floor, and said main casing having ducts extending therein which are open between a respective one of said auxiliary cleaning bodies and the dust collecting chamber at the front portion of said casing.
Claim 2
Dependent Claim
244 words
A floor cleaner for sweeping up dust from a floor, said cleaner comprising: a main casing having a front portion, a rear portion, and opposite sides extending from said front to said rear portions; a handle to which said main casing is rotatably mounted; a rotary cleaning body rotatably mounted to said main casing and disposed therein between said front and said rear portions, dust collecting chambers defined at the front and the rear portions of said casing, respectively, each of said dust collecting chamber having an opening confronting said rotary cleaning body; driven rollers disposed adjacent the opposite sides of said casing at opposite end portions of said rotary cleaning body, respectively, said driven rollers integral with said rotary cleaning body so as to rotate therewith; rotatable drive wheels mounted to said casing and disposed at the opposite sides of said casing adjacent said driven rollers for supporting said casing on a floor, said drive wheels engageable with said driven rollers for rotating said driven rollers; and individual auxiliary rotary cleaning bodies disposed adjacent the opposite sides of said casing at said front portion thereof, respectively, for sweeping up dust from a floor which lies under said main casing adjacent said sides thereof when the cleaner is moved over the floor, and said main casing having ducts extending therein which are open between a respective one of said auxiliary cleaning bodies and the dust collecting chamber at the front portion of said casing.
Claim 3
Dependent Claim
105 words
A cleaner as claimed in claim 1, wherein said main casing comprises a front wall at said front portion thereof, the opposite sides of said casing intersect said front wall to define respective front corners of said casing, and said auxiliary cleaning bodies are rotatably mounted to said casing and disposed therein at said front corners thereof, and further comprising an auxiliary driven roller integral with each of said auxiliary cleaning bodies and disposed inwardly thereof with respect to said main casing, and auxiliary wheels mounted to said casing and freely engageable with each said auxiliary driven roller, respectively, for rotating each said auxiliary roller.
Claim 4
Dependent Claim
43 words
A floor cleaner as claimed in claim 2, wherein said auxiliary bodies each have inner portions extending inwardly of the opposite end portions of said rotary cleaning body, respectively, in said casing in a direction extending between the opposite sides of said casing.
Claim 5
Dependent Claim
43 words
A floor cleaner as claimed in claim 1, wherein said auxiliary bodies each have inner portions extending inwardly of the opposite end portions of said rotary cleaning body, respectively, in said casing in a direction extending between the opposite sides of said casing.
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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) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |