Patent US5099545A successfully refreshed from Google Patents.
US5099545A
Expired / Lapsed
US
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Vacuum cleaner including a squeegee
Assignee: Black and Decker Inc
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Filing: 1990-08-28
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Granted: 1992-03-31
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Expires: 2010-08-28
Abstract
Abstract A vacuum cleaner includes a motor, a housing enclosing the motor, a fan driven by the motor for producing a vacuum, a canister removably attached to the front end of the housing and having an intake nozzle for reception of foreign matter, liquid and air drawn into the canister in response to the vacuum developed by the fan. The intake nozzle includes a converging section extending from the front of the nozzle towards the center thereof and a diverging section extending from the terminus of the converging section towards the terminus of the nozzle. A squeegee is disposed in said nozzle and has a main body portion including at least one flow passage defined by a forward converging section terminating in a generally constant diameter section. The end of said constant diameter section is generally aligned with the terminus of the converging section of the nozzle. A flapper valve overlies the end of said constant diameter section of said squeegee and is integrally molded with said main body portion.
Inventors
- 👤 Charles Z. Krasznai
- 👤 John B. Mallow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:10
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
203 words
A vacuum cleaner including a motor, a housing enclosing the motor, a fan driven by the motor for producing a vacuum, a canister removably attached to the front end of the housing and having an intake nozzle for reception of foreign matter, liquid and air drawn into the canister in response to the vacuum developed by the fan, said intake nozzle including a first section that has a converging cross-sectional are in the direction of flow extending from the front of the nozzle towards the center thereof and a second section that has a diverging cross-sectional area in the direction of flow extending from the terminus of the converging section towards the terminus of the nozzle, and a squeegee disposed in said nozzle and having a main body portion including at least one flow passage defined by a forward section that has a converging cross-sectional area in the direction of flow terminating in a generally constant diameter section, the end of said constant diameter section being generally axially aligned with the terminus of the converging section of the nozzle and a flapper valve overlying the end of said constant diameter portion of said squeegee and being integrally molded with said main body portion.
Claim 2
Dependent Claim
203 words
A vacuum cleaner including a motor, a housing enclosing the motor, a fan driven by the motor for producing a vacuum, a canister removably attached to the front end of the housing and having an intake nozzle for reception of foreign matter, liquid and air drawn into the canister in response to the vacuum developed by the fan, said intake nozzle including a first section that has a converging cross-sectional are in the direction of flow extending from the front of the nozzle towards the center thereof and a second section that has a diverging cross-sectional area in the direction of flow extending from the terminus of the converging section towards the terminus of the nozzle, and a squeegee disposed in said nozzle and having a main body portion including at least one flow passage defined by a forward section that has a converging cross-sectional area in the direction of flow terminating in a generally constant diameter section, the end of said constant diameter section being generally axially aligned with the terminus of the converging section of the nozzle and a flapper valve overlying the end of said constant diameter portion of said squeegee and being integrally molded with said main body portion.
Claim 3
Dependent Claim
47 words
A vacuum cleaner in accordance with claim 1 wherein the main body portion of said squeegee includes a pair of flow passages separated by an axially extending reinforcing rib integrally molded with said main body portion, each air passage having a flapper valve overlying the end thereof.
Claim 4
Dependent Claim
26 words
A vacuum cleaner in accordance with claim 2 wherein each flapper valve is normally biased towards a slightly open position relative to its respective flow passage.
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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) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |