Patent US3790987A successfully refreshed from Google Patents.
US3790987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive means for vacuum cleaner
Assignee: Scott Fetzer Co
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Filing: 1972-10-20
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Granted: 1974-02-12
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Expires: 1992-10-20
Abstract
Abstract A vacuum cleaner having a motor housing to which powered attachments may be directly mechanically coupled without the use of drive belts as the mechanical coupling between the motor housing and the powered attachment. The motor housing encloses a motor fan unit and a drive belt which couples the motor to a drive socket. The drive socket extends through a wall in the housing so that the socket may receive the drive shafts of powered attachments, such as vacuum cleaner brush nozzles, power polishers, rug scrubbers, and power-driven miscellaneous tools. A vacuum inlet extends through the wall in the motor housing and suction hoses may be attached to the inlet for off-the-floor cleaning purposes.
Inventors
- 👤 Farland C Mac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:00
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A motor housing unit for a vacuum cleaner comprising a motorfan assembly for drawing dirt-laden air to filter means and for powering accessories for the vacuum cleaner, a cover enclosing said motor-fan assembly, drive shaft means driven by and extending from said motor, belt means driven by and extending from said drive shaft to coupling means, said coupling means being mounted in a wall of said cover and having a first portion driven by said belt, said coupling means having a second portion extending through said wall and being adapted to drive a powered accessory, said drive shaft means, said belt means, and said first portion of said coupling means all being enclosed by said cover, and means pivotally connected to said cover for releasably holding an accessory to said unit and in coupled engagement with said coupling means.
Claim 2
Dependent Claim
139 words
A motor housing unit for a vacuum cleaner comprising a motorfan assembly for drawing dirt-laden air to filter means and for powering accessories for the vacuum cleaner, a cover enclosing said motor-fan assembly, drive shaft means driven by and extending from said motor, belt means driven by and extending from said drive shaft to coupling means, said coupling means being mounted in a wall of said cover and having a first portion driven by said belt, said coupling means having a second portion extending through said wall and being adapted to drive a powered accessory, said drive shaft means, said belt means, and said first portion of said coupling means all being enclosed by said cover, and means pivotally connected to said cover for releasably holding an accessory to said unit and in coupled engagement with said coupling means.
Claim 3
Dependent Claim
33 words
A motor housing unit for a vacuum cleaner according to claim 1 wherein said cover has a forwardly projecting portion which encloses Said belt means and said first portion of said coupling means.
Claim 4
Dependent Claim
18 words
A motor housing unit according to claim 1, including means defining a vacuum inlet opening through said cover.
Claim 5
Dependent Claim
221 words
A motor housing and cleaning accessory unit for a vacuum cleaner comprising a motor-fan assembly for drawing dirt-laden air to filter means and for powering said accessory, a cover enclosing said motor-fan assembly, drive shaft means driven by and extending from said motor, belt means driven by and extending from said drive shaft to coupling means, said coupling means being mounted in a wall of a forwardly projecting portion of said cover and having a first portion driven by said belt, said forwardly projecting portion enclosing said belt means, said coupling means having a second portion extending through said wall and having a socket therein for driving said accessory, said drive shaft means, said belt means, and said first portion of said coupling means all being enclosed by said cover, said cover having a front wall intersecting said wall of said projecting portion, said accessory comprising a cylindrical brush rotatably mounted within a brush housing, said brush housing having first and second walls respectively cooperating with the front wall of said cover and said wall of said projecting portion, means defining an opening in said second wall, said brush having an end portion projecting through said opening and into said socket so that said brush is rotatably driven by said coupling means, and means releasably holding said accessory to said cover.
Claim 6
Dependent Claim
221 words
A motor housing and cleaning accessory unit for a vacuum cleaner comprising a motor-fan assembly for drawing dirt-laden air to filter means and for powering said accessory, a cover enclosing said motor-fan assembly, drive shaft means driven by and extending from said motor, belt means driven by and extending from said drive shaft to coupling means, said coupling means being mounted in a wall of a forwardly projecting portion of said cover and having a first portion driven by said belt, said forwardly projecting portion enclosing said belt means, said coupling means having a second portion extending through said wall and having a socket therein for driving said accessory, said drive shaft means, said belt means, and said first portion of said coupling means all being enclosed by said cover, said cover having a front wall intersecting said wall of said projecting portion, said accessory comprising a cylindrical brush rotatably mounted within a brush housing, said brush housing having first and second walls respectively cooperating with the front wall of said cover and said wall of said projecting portion, means defining an opening in said second wall, said brush having an end portion projecting through said opening and into said socket so that said brush is rotatably driven by said coupling means, and means releasably holding said accessory to said cover.
Claim 7
Dependent Claim
48 words
A motor housing and cleaning accessory according to claim 4, wherein said means releasably holding said accessory to said cover includes a gate having its ends pivotally connected to said cover and having a portion in surrounding relationship with respect to front and side walls of said accessory.
Claim 8
Dependent Claim
38 words
A motor housing and cleaning accessory according to claim 4, including means defining a vacuum inlet opening through the front wall of said cover and means defining a cooperating opening in the first wall of said brush housing.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |