Patent US4395794A successfully refreshed from Google Patents.
US4395794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to take up refuse by vacuum intake air
Assignee: Ing Alfred Schmidt GmbH
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Filing: 1980-05-08
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Granted: 1983-08-02
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Expires: 2000-05-08
Abstract
Abstract A vacuum cleaner intake device formed of a V-shaped housing widening in the direction of working. The housing has a funnel shape nozzle, a fitting at the apex of the nozzle for connection to a source of suction and a pair of arms extending in a V-shape respectively forwardly and laterally of the nozzle. A pair of side walls are provided each having a skid at its lower edge elevating said housing above the floor. A hood covers and defines with the arms and the side walls a collection chamber open at the forward and rear edges. Each of the arms are provided on their bottom surface with a pair of spaced battens defining between them an elongated suction groove open to the collection chamber and extending outwardly through the side wall.
Inventors
- 👤 Ian J. Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:08
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
A vacuum cleaner intake device comprising a housing having a funnel shape nozzle, a flange at the apex of said nozzle adapted for connection to a source of suction, a pair of arms extending in a V-shape respectively forwardly and laterally of said nozzle, a pair of side walls each having a skid at its lower edge elevating said housing above the floor, and a hood covering and defining with said arms and said side walls a collection chamber, open at the forward and rear edges, each of said arms having on their bottom surface, a pair of spaced battens defining between them an elongated suction channel, continuously open along its length to the floor, open to the collection chamber at one end, and extending outwardly through the side wall and open thereto.
Claim 2
Dependent Claim
133 words
A vacuum cleaner intake device comprising a housing having a funnel shape nozzle, a flange at the apex of said nozzle adapted for connection to a source of suction, a pair of arms extending in a V-shape respectively forwardly and laterally of said nozzle, a pair of side walls each having a skid at its lower edge elevating said housing above the floor, and a hood covering and defining with said arms and said side walls a collection chamber, open at the forward and rear edges, each of said arms having on their bottom surface, a pair of spaced battens defining between them an elongated suction channel, continuously open along its length to the floor, open to the collection chamber at one end, and extending outwardly through the side wall and open thereto.
Claim 3
Dependent Claim
42 words
The device in accordance with claim 1 wherein the top of the hood is fitted on the under side with a lining sagging towards the floor, said lining being subject on both its surfaces to the suction effect of the suction source.
Claim 4
Dependent Claim
39 words
The device in accordance with claim 2, wherein that the lining is fixed along at least one of the front and rear edges and is maintained free along the side edges so that suction air flow is permitted thereover.
Claim 5
Dependent Claim
25 words
The device in accordance with claim 3 wherein the lining is fixed only along the front edge, and is freely suspended from the rear edge.
Claim 6
Dependent Claim
31 words
The device in accordance with claim 2 wherein the lining is made of stretch-free material and the space between lining and top of hood is filled with easily deformable filling material.
Claim 7
Dependent Claim
29 words
The device according to claim 1 wherein said battens are arranged so that said channels extend at an angle to each other forwardly and laterally relative to said nozzle.
Claim 8
Dependent Claim
22 words
The device according to claim 6 wherein at least one of the battens is plastic and is arranged as a scraping strip.
Claim 9
Dependent Claim
31 words
The device according to claim 1 wherein at least one of the battens is lamina and is fixed to the bottom of the housing parallel to the surface of the floor.
Claim 10
Dependent Claim
25 words
The device according to claim 1 wherein at least one of the battens comprises a brushing strip adapted to sweep the surface of the floor.
Claim 11
Dependent Claim
14 words
The device according to claim 9 wherein said batten is a resilient flexible flap.
Claim 12
Dependent Claim
32 words
The device according to claim 1 wherein the rear wall of the nozzle and the rear batten of said pair of battens form an acute angle with the surface of the floor.
References Cited (Backward Citations)
US1272665A
Cited
US1782882A
Cited
US2131398A
Cited
US2235226A
Cited
US3054130A
Cited
US3984894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |