US3675266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum type debris collector with scraper blade
Assignee: TARRANT Manufacturing Co
•
Filing: 1970-12-08
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Granted: 1972-07-11
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Expires: 1990-12-08
Abstract
Abstract A cleaning attachment to the suction hose or intake conduit of a debris collector includes a blade for scraping the ground and lifting debris into the suction path, the blade being adjustably supported in a shroud in a position to form a path for high velocity air at both the front and rear of the shroud to assist in conveying debris to the suction hose or conduit and a debris receiver. The cleaning attachment includes ground contacting members to facilitate movement over a surface to be cleaned and is pivotally mounted on a vehicle so that it can be raised to avoid obstacles and for rapid transit.
Inventors
- 👤 Gregory J Murray
- 👤 Fred K Tarrant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:21
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; E01H1/0836; A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
159 words
An attachment for a vacuum debris collector of a type comprising a vehicle, a debris receiver associated with said vehicle, and a flexible suction conduit attached to said receiver, said attachment comprising a shroud having an outlet portion attachable to such conduit and an inlet portion, members attached to said inlet portion for contacting a surface to be cleaned and over which said shroud is moved, and a scraper blade supported by said shroud, said blade having a front edge spaced from the lower edge of the front of said inlet and forming therewith an opening for receiving debris to be collected, said blade having a rear edge spaced from the rear of said inlet to form therewith a path for high velocity air to assist in conveying debris contacted by said scraper blade to said conduit and debris receiver, said scraper blade containing one or more openings to facilitate raising debris lifted by said blade to said conduit.
Claim 2
Dependent Claim
159 words
An attachment for a vacuum debris collector of a type comprising a vehicle, a debris receiver associated with said vehicle, and a flexible suction conduit attached to said receiver, said attachment comprising a shroud having an outlet portion attachable to such conduit and an inlet portion, members attached to said inlet portion for contacting a surface to be cleaned and over which said shroud is moved, and a scraper blade supported by said shroud, said blade having a front edge spaced from the lower edge of the front of said inlet and forming therewith an opening for receiving debris to be collected, said blade having a rear edge spaced from the rear of said inlet to form therewith a path for high velocity air to assist in conveying debris contacted by said scraper blade to said conduit and debris receiver, said scraper blade containing one or more openings to facilitate raising debris lifted by said blade to said conduit.
Claim 3
Dependent Claim
48 words
The attachment of claim 1 in which the spacing of the front edge of said blade with respect to the lower edge of said front wall is adjustable to control the size of said opening in accord with the size of the particles of debris to be collected.
Claim 4
Dependent Claim
14 words
The attachment of claim 1 in which said scraper comprises a hardened steel blade.
Claim 5
Dependent Claim
17 words
The attachment of claim 1 in which said scraper comprises a non-metallic member having abrasion resisting characteristics.
Claim 6
Dependent Claim
11 words
The attachment of claim 1 in which said blade is reversible.
Claim 7
Dependent Claim
22 words
The attachment of claim 1 in which said surface contacting members comprise wear resistant surfaces and are adjustable relativE to said shroud.
Claim 8
Dependent Claim
24 words
The attachment of claim 6 in which said surfaces are adjustable both angularly and vertically relative to said lower edge of said shroud inlet.
Claim 9
Dependent Claim
44 words
The arrangement of claim 1 in which a bracket is attached to the front of the vehicle, said attachment is connected to said bracket and is rotatable about transverse axes in a plane substantially parallel to the surface over which the shroud is moved.
Claim 10
Dependent Claim
27 words
The arrangement of claim 8 which includes means supporting said bracket to control the pressure of said surface contacting members on the surface over which they move.
Claim 11
Dependent Claim
39 words
The arrangement of claim 8 in which said bracket is pivotally attached to the front of the vehicle and which includes means for raising said bracket and said attachment as a unit to permit rapid travel of the vehicle.
Claim 12
Dependent Claim
50 words
The attachment of claim 1 in which said shroud has a front wall and valve means are attached to said front wall to control the size of the opening formed by said front wall and said scraper blade whereby said attachment may be employed to collect debris of different sizes.
Claim 13
Dependent Claim
32 words
The attachment of claim 11 in which said valve means comprises an adjustable shutter whereby the distance of the lower edge of said front wall relative to the ground may be varied.
Claim 14
Dependent Claim
28 words
The attachment of claim 1 in which said openings are of a size small enough to prevent objects raised by said scraper blades from passing through such openings.
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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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |