US3866263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaner with auxiliary air flow
Assignee: Hoover Co
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Filing: 1973-04-17
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Granted: 1975-02-18
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Expires: 1993-04-17
Abstract
Abstract The invention provides a floor care appliance in which an auxiliary flow of air is introduced to floor care appliance mainstream air after the same has passed through the dirt bag, motor, and suction fan system. An advantageous arrangement is arrived at that provides a much lower air discharge temperature and an advantageous cooling of the cleaner body in the area of this air discharge.
Inventors
- 👤 Darwin S Crouser
- 👤 Joseph A Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:02
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L9/00; A47L9/0081
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
A floor care appliance for providing a suction flow of air for cleaning purposes having a casing and including; a. a motor and motor-driven suction fan means for providing said suction flow, said suction flow moving directly through a suction inlet for said casing and then through a filter means for said floor care appliance to then pass through said motor for cooling the same so that the temperature of the suction flow of air is thereby increased, said suction flow of air then passing through said motor-driven suction fan means to become a pressure flow of air, b. an auxiliary means for providing an auxiliary flow of air to said floor care appliance, c. said auxiliary fan means discharging said auxiliary flow of air to said pressure flow of air downstream of said motor, immediately adjacent the downstream discharge of said motor-driven suction fan means, for cooling said pressure flow, without impinging said auxiliary flow of air on said suction flow of air in the volume encompassed by said motor and between it and the discharge of said motor-driven suction fan means.
Claim 2
Dependent Claim
183 words
A floor care appliance for providing a suction flow of air for cleaning purposes having a casing and including; a. a motor and motor-driven suction fan means for providing said suction flow, said suction flow moving directly through a suction inlet for said casing and then through a filter means for said floor care appliance to then pass through said motor for cooling the same so that the temperature of the suction flow of air is thereby increased, said suction flow of air then passing through said motor-driven suction fan means to become a pressure flow of air, b. an auxiliary means for providing an auxiliary flow of air to said floor care appliance, c. said auxiliary fan means discharging said auxiliary flow of air to said pressure flow of air downstream of said motor, immediately adjacent the downstream discharge of said motor-driven suction fan means, for cooling said pressure flow, without impinging said auxiliary flow of air on said suction flow of air in the volume encompassed by said motor and between it and the discharge of said motor-driven suction fan means.
Claim 3
Dependent Claim
162 words
In a floor care appliance having an outer casing utilized for cleaning purposes; a. a motor and motor-driven fan suction means for providing a suction flow of air through said motor and a pressure flow of air discharged from said motor-driven fan suction means; b. said suction air moving through a suction inlet for said casing and then through a filter means for said floor care appliance to then pass through said motor for cooling thereof; c. a secondary flow of air directly induced by said motor-driven fan suction means and discharged directly into said pressure flow of air immediately downstream of said motor-driven fan suction means and within a fan housing means which encapsulates said motor-driven fan suction means, and is spaced radially inwardly of said outer casing, and d. said secondary flow of air being discharged into said pressure flow of air downstream of said motor means whereby said secondary flow of air does not pass through said motor means.
Claim 4
Dependent Claim
162 words
In a floor care appliance having an outer casing utilized for cleaning purposes; a. a motor and motor-driven fan suction means for providing a suction flow of air through said motor and a pressure flow of air discharged from said motor-driven fan suction means; b. said suction air moving through a suction inlet for said casing and then through a filter means for said floor care appliance to then pass through said motor for cooling thereof; c. a secondary flow of air directly induced by said motor-driven fan suction means and discharged directly into said pressure flow of air immediately downstream of said motor-driven fan suction means and within a fan housing means which encapsulates said motor-driven fan suction means, and is spaced radially inwardly of said outer casing, and d. said secondary flow of air being discharged into said pressure flow of air downstream of said motor means whereby said secondary flow of air does not pass through said motor means.
Claim 5
Dependent Claim
29 words
The floor care appliance of claim 1 wherein; a. said auxiliary fan means and said motor-driven pressure fan means are driven from a common shaft extending from said motor.
Claim 6
Dependent Claim
44 words
The floor care appliance of claim 1 wherein; a. the combined discharge flow of said suction flow and said auxiliary flow of air exits from said floor care appliance through spaced louvers formed in the top of the housing of said floor care appliance.
Claim 7
Dependent Claim
57 words
The floor care appliance of claim 1 wherein; a. an apertured fan baffle means is disposed downstream of said auxiliary fan means and said motor-driven suction fan means, and b. said auxiliary air flow is discharged into said pressure flow to provide a combined flow prior to movement of said flow through said apertured fan baffle means.
Claim 8
Dependent Claim
50 words
The floor care appliance of claim 5 wherein; a. said apertured fan baffle means includes directing vanes that direct said combined flow axially of said floor care appliance, and b. a chamber means disposed downstream of said apertured fan baffle means for providing for further mixing of said combined flow.
Claim 9
Dependent Claim
49 words
The floor care appliance of claim 6 wherein; a. a housing is provided for covering and forming said chamber means around said auxiliary fan means and said motor-driven suction fan means, and b. mixing of said auxiliary flow of air and pressure flow of air occurs within said housing.
Claim 10
Dependent Claim
19 words
The floor care appliance of claim 7 wherein; a. said apertured fan baffle means is disposed within said housing.
Claim 11
Dependent Claim
36 words
The floor care appliance of claim 8 wherein; a. a passageway means is provided from said fan housing, and b. said combined flow moves through said passagewaY means to be discharged from said floor care appliance.
Claim 12
Dependent Claim
42 words
The floor care appliance of claim 9 wherein; a. said floor care appliance includes a boot means for guiding said auxiliary air flow to said auxiliary fan means, b. said boot extending through said housing and opening to said auxiliary fan means.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |