US4901394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor nozzle for electric cleaner
Assignee: NATIONAL TIRE COMPANY Ltd A CORP OF JAPAN
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Filing: 1989-04-17
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Granted: 1990-02-20
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Expires: 2009-04-17
Abstract
Abstract A floor nozzle for vacuum cleaner comprising: a floor nozzle body in which an agitator and a drive source are incorporated, the agitator includes a rotor provided on its outer peripheral surface with flexible lips made of polyurethane rubber added with talc as a reinforcing agent so as to have a rubber hardness of 50 to 70, and blended with 0.1 to 0.5% of a coloring agent.
Inventors
- 👤 Kazuo Nakamura
- 👤 Yoshitaka Murata
- 👤 Hiroshi Kawakami
- 👤 Takemitu Okuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:35
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0405; A47L9/0416; A47L9/0461; A47L9/0483
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A floor nozzle for a vacuum cleaner, comprising: a floor nozzle body; an agitator incorporated in said floor nozzle body and having a rotor provided on its outer peripheral surface with flexible lips, and a drive source incorporated in said nozzle floor body, for driving said agitator, said lips being made of a material in which 30 to 60 parts of talc is added to 100 parts of vulcanized polyurethane.
Claim 2
Dependent Claim
70 words
A floor nozzle for a vacuum cleaner, comprising: a floor nozzle body; an agitator incorporated in said floor nozzle body and having a rotor provided on its outer peripheral surface with flexible lips, and a drive source incorporated in said nozzle floor body, for driving said agitator, said lips being made of a material in which 30 to 60 parts of talc is added to 100 parts of vulcanized polyurethane.
Claim 3
Dependent Claim
28 words
A floor nozzle as set forth in claim 1, wherein said lips have a hardness in a range of 50 to 70 shore A, ASTM D-2290 Durometer Hardness
Claim 4
Dependent Claim
23 words
A floor nozzle as set forth in claim 1, wherein said lips are colored with 0.1 to 0.5% of a rubber coloring agent.
Claim 5
Dependent Claim
24 words
A floor nozzle as set further in claim 1, wherein several projections are formed on at least one surface of each of said lips.
References Cited (Backward Citations)
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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) | 1993-02-19 | 1993-08-21 | 1994-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-19 | 1997-08-21 | 1998-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-19 | 2001-08-21 | 2002-02-20 | $7700.00 | Window Closed / Lapsed |