Patent US3668842A successfully refreshed from Google Patents.
US3668842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner and exhaust housing
Assignee: Singer Co
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Filing: 1970-03-20
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Granted: 1972-06-13
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Expires: 1990-03-20
Abstract
Abstract A vacuum cleaner of the canister variety for domestic use having upper and lower housing sandwiching an intermediate housing therebetween. An air inlet is formed at the front of the upper housing and an exhaust housing is secured to the rear of the lower housing. A dust bag is positioned between the upper and intermediate housing and is separated from a motor blower assembly by an apertured partition wall. A washable permanent secondary filter, fitted about a wire form frame, is positioned on the dust bag side of the aperture in the partition wall by means of a pair of slotted ribs which receive a portion of the wire frame and a cam shaped rib which also holds a portion of the wire frame. The exhaust housing includes a sliding door having spaced air slots and a rear wall having similar spaced air slots alternately offset from those of the door. A hose assembly blower connection aperture is formed in the exhaust housing adjacent to the slotted rear wall. During vacuum operation the sliding door is positioned in front of the hose assembly blower aperture and air is exhausted from the motor-blower assembly through both sets of slots, but during blower operation the door is positioned in front of the rear wall with the solid portion of the door closing off the slots in the wall of the exhaust housing to concentrate all the exhaust air through the hose assembly blower connection aperture.
Inventors
- 👤 William A Batson
- 👤 Charles T Fromknecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:20
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/362; A47L9/00; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
290 words
In a vacuum cleaner of the canister type comprising a vacuum cleaner housing having a filter compartment, a porous filter bag mounted in said filter compartment, an air moving unit compartment communicating with said filter compartment, means defining an air inlet in said housing communicating with said filter bag, means defining an air outlet in said housing communicating with said air moving unit compartment, and an air moving unit mounted in said air moving unit compartment for drawing dirt laden air through said inlet and discharging filtered air through said outlet, the improvement comprising: an exhaust housing mounted to the vacuum cleaner housing in communication with said outlet for receiving substantially all the air discharged therethrough, said exhaust housing including a wall having two exhaust ports, a first of said ports comprising a single large aperture, the second port comprising a plurality of slots separated by solid portions of said wall and in juxtaposition with said single aperture, a plate having a plurality of slots of substantially the configuration of the slots of said second port and separated by solid portions of said plate, means defining a slideway downstream of said ports for slidably mounting said plate on said exhaust housing adjacent said wall, said plate being positioned in said slideway and selectively slidable between a first position superposed over said first port and a second position superposed over said second port, said slots and solid portions of said plate being offset relative to the slots and solid portions of said second port such that when said plate is positioned in the second position the solid portions of the plate mask the slots of said second port and the solid portions of said wall mask the slots of said plate.
Claim 2
Dependent Claim
290 words
In a vacuum cleaner of the canister type comprising a vacuum cleaner housing having a filter compartment, a porous filter bag mounted in said filter compartment, an air moving unit compartment communicating with said filter compartment, means defining an air inlet in said housing communicating with said filter bag, means defining an air outlet in said housing communicating with said air moving unit compartment, and an air moving unit mounted in said air moving unit compartment for drawing dirt laden air through said inlet and discharging filtered air through said outlet, the improvement comprising: an exhaust housing mounted to the vacuum cleaner housing in communication with said outlet for receiving substantially all the air discharged therethrough, said exhaust housing including a wall having two exhaust ports, a first of said ports comprising a single large aperture, the second port comprising a plurality of slots separated by solid portions of said wall and in juxtaposition with said single aperture, a plate having a plurality of slots of substantially the configuration of the slots of said second port and separated by solid portions of said plate, means defining a slideway downstream of said ports for slidably mounting said plate on said exhaust housing adjacent said wall, said plate being positioned in said slideway and selectively slidable between a first position superposed over said first port and a second position superposed over said second port, said slots and solid portions of said plate being offset relative to the slots and solid portions of said second port such that when said plate is positioned in the second position the solid portions of the plate mask the slots of said second port and the solid portions of said wall mask the slots of said plate.
Claim 3
Dependent Claim
340 words
In a vacuum cleaner of the canister type comprising a vacuum cleaner housing having a filter compartment, a porous filter bag mounted in said filter compartment, an air moving unit compartment communicating with said filter compartment, means defining an air inlet in said housing communicating with said filter bag, means defining an air outlet in said housing communicating with said air moving unit compartment, and an air moving unit mounted in said air moving unit compartment for drawing dirt laden air through said inlet and discharging filtered air through said outlet, the improvement comprising: an exhaust housing mounted to the vacuum cleaner housing in communication with said outlet for receiving substantially all the air discharged therethrough, said exhaust housing includiNg a rear wall having two exhaust ports, a floor abutting said wall, and a pair of side walls each abutting said floor and said rear wall, said floor, side walls and rear wall being disposed in abutting relationship to said vacuum cleaner housing and secured thereto to form a conduit for said air from said outlet, a first of said ports comprising a single large aperture, the second port comprising a plurality of slots separated by solid portions of said wall and in juxtaposition with said single aperture, a plate having a plurality of slots of substantially the configuration of the slots of said second port and separated by solid portions of said plate, means defining a slideway downstream of said ports for slidably mounting said plate on said exhaust housing adjacent said wall, said plate being positioned in said slideway and selectively slidable between a first position superposed over said first port and a second position superposed over said second port, said slots and solid portions of said plate being offset relative to the slots and solids portions of said second port such that when said plate is positioned in the second position the solid portions of the plate mask the slots of said second port and the solid portions of said wall mask the slots of said plate.
Claim 4
Dependent Claim
340 words
In a vacuum cleaner of the canister type comprising a vacuum cleaner housing having a filter compartment, a porous filter bag mounted in said filter compartment, an air moving unit compartment communicating with said filter compartment, means defining an air inlet in said housing communicating with said filter bag, means defining an air outlet in said housing communicating with said air moving unit compartment, and an air moving unit mounted in said air moving unit compartment for drawing dirt laden air through said inlet and discharging filtered air through said outlet, the improvement comprising: an exhaust housing mounted to the vacuum cleaner housing in communication with said outlet for receiving substantially all the air discharged therethrough, said exhaust housing includiNg a rear wall having two exhaust ports, a floor abutting said wall, and a pair of side walls each abutting said floor and said rear wall, said floor, side walls and rear wall being disposed in abutting relationship to said vacuum cleaner housing and secured thereto to form a conduit for said air from said outlet, a first of said ports comprising a single large aperture, the second port comprising a plurality of slots separated by solid portions of said wall and in juxtaposition with said single aperture, a plate having a plurality of slots of substantially the configuration of the slots of said second port and separated by solid portions of said plate, means defining a slideway downstream of said ports for slidably mounting said plate on said exhaust housing adjacent said wall, said plate being positioned in said slideway and selectively slidable between a first position superposed over said first port and a second position superposed over said second port, said slots and solid portions of said plate being offset relative to the slots and solids portions of said second port such that when said plate is positioned in the second position the solid portions of the plate mask the slots of said second port and the solid portions of said wall mask the slots of said plate.
Claim 5
Dependent Claim
52 words
In a vacuum cleaner as recited in claim 2 wherein said slideway defining means comprises at least a first rib formed on said floor and at least a second rib formed on said vacuum cleaner housing above said wall, each of said ribs disposed in a plane substantially parallel to said wall.
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |