Patent US3838775A successfully refreshed from Google Patents.
US3838775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for collecting loose material from a surface, particularly oil floating on water
Assignee: Individual
•
Filing: 1972-02-28
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Granted: 1974-10-01
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Expires: 1992-02-28
Abstract
Abstract A device for collecting loose material from a surface, especially oil floating on water, such device employing a drumshaped rotor rotatable in a relatively closed housing which is provided with an elongated intake opening in the lower portion thereof tangentially displaced relative to the lower portion of the rotor and extending in axial direction across the rotor at the leading side thereof, the housing having a discharge duct communicating with the interior thereof and extending in a direction generally tangentially to the rotor and centrally disposed axially with respect thereto, the rotor being provided with blades of helical configuration forming a centrally disposed ring of material-receiving scoop members substantially aligned with the discharge duct, with said blades being arranged to transport material entering the intake opening toward the scoop members and discharged thereby into said duct.
Inventors
- 👤 A Larsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:31
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/103; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
285 words
A device for collecting a mass of material floating on water, particularly oil, comprising a cylindrical rotor rotatable about an axis adapted to extend substantially parallel to the general surface from which such material is to be collected, said rotor drum having a Plurality of generally radially extending blades of helical configuration, with the portions of each blade disposed at opposite sides of the axially central portion of the rotor drum having opposite pitch to form respective right and lefthanded portions, each pair of which are connected at their inner ends forming a central ring of material-receiving scoop members, a housing substantially enclosing said rotor and constructed to define an elongated, narrow slit therein extending in axial direction across the rotor drum at the leading side thereof, and tangentially displaced relative to the lowermost portion of said rotor in leading direction, which slit forms a material intake opening, said housing having a material discharge duct communicating with the housing interior, which duct extends in a direction generally tangential to said rotor and axially disposed substantially in alignment with the scoop members at the central portions of said rotor blades, said rotor being rotatable in a direction to move the lower portion thereof away from said intake opening, and said blades being so arranged that material entering said intake opening is tangentially transported toward said scoop members and thereby discharged therefrom into said discharge duct, float means for supporting said housing above the surface of a body of water with said material intake opening disposed to receive material floating upon such surface, float-supported receptacle means for collected material, and conduit means operatively connected to said discharge duct, adapted to discharge collected material into said receptacle means.
Claim 2
Independent Claim
285 words
A device for collecting a mass of material floating on water, particularly oil, comprising a cylindrical rotor rotatable about an axis adapted to extend substantially parallel to the general surface from which such material is to be collected, said rotor drum having a Plurality of generally radially extending blades of helical configuration, with the portions of each blade disposed at opposite sides of the axially central portion of the rotor drum having opposite pitch to form respective right and lefthanded portions, each pair of which are connected at their inner ends forming a central ring of material-receiving scoop members, a housing substantially enclosing said rotor and constructed to define an elongated, narrow slit therein extending in axial direction across the rotor drum at the leading side thereof, and tangentially displaced relative to the lowermost portion of said rotor in leading direction, which slit forms a material intake opening, said housing having a material discharge duct communicating with the housing interior, which duct extends in a direction generally tangential to said rotor and axially disposed substantially in alignment with the scoop members at the central portions of said rotor blades, said rotor being rotatable in a direction to move the lower portion thereof away from said intake opening, and said blades being so arranged that material entering said intake opening is tangentially transported toward said scoop members and thereby discharged therefrom into said discharge duct, float means for supporting said housing above the surface of a body of water with said material intake opening disposed to receive material floating upon such surface, float-supported receptacle means for collected material, and conduit means operatively connected to said discharge duct, adapted to discharge collected material into said receptacle means.
Claim 3
Dependent Claim
62 words
A device according to claim 1, wherein the portion of the housing defining the upper edge of said intake opening is upwardly movable to effect a generally vertical adjustment of said upper edge and thereby vary the effective size of said intake opening, and means for retaining said portion in any of its adjusted positions, relative to the remainder of the housing.
Claim 4
Dependent Claim
89 words
A device according to claim 1, wherein the portion of said housing defining the lower edge of said intake opening is adjustable toward and away from the lower portion of the rotor in a direction which is tangential to the lower portion of the latter, to vary the position of the lower edge of said intake opening with respect to the upper edge thereof and with respect to the rotor, and means for retaining said portion in any of its adjusted positions relative to the remainder of the housing.
Claim 5
Dependent Claim
129 words
A device according to claim 1, wherein the portion of the housing defining the upper edge of said intake opening is upwardly movable to effect a generally vertical adjustment of said upper edge and thereby vary the effective size of said intake opening, and the portion of said housing defining the lower edge of said intake opening is adjustable toward and away from the lower portion of the rotor in a direction which is tangential to the lower portion of the latter, to vary the position of the lower edge of said intake opening with respect to the upper edge thereof and with respect to the rotor, and respective means for retaining each of said portions in any of its adjusted positions relative to the remainder of the housing.
Claim 6
Dependent Claim
38 words
A device according to claim 4, wherein said first mentioned portion defining the upper edge of the intake opening is of visor-like configuration and is mounted on said housing for pivotal movement about the axis of said rotor.
Claim 7
Dependent Claim
33 words
A device according to claim 5, wherein said means for maintaining the respective portions, defining the upper and lower edges of said intake opening, in their adjusted positions comprises respective hydraulic cylinder means.
Claim 8
Dependent Claim
37 words
A device according to claim 1, comprising means associated with said discharge duct for introducing a fluid thereinto to provide a lubrication layer between the inner surface of the duct sidewall and the material being transported therein.
Claim 9
Dependent Claim
57 words
A device according to claim 4, wherein said float means for supporting said housing over tHe surface of a body of water comprises at least one floatable member of a size and shape to maintain said housing and associated structure in operative position at the water surface, and including means connecting said device to such supporting means.
Claim 10
Dependent Claim
31 words
A device according to claim 8, wherein a single floatable member is employed, with said connecting means being operable to dispose said housing at the water surface adjacent the floatable member.
Claim 11
Dependent Claim
49 words
A device according to claim 8, wherein a pair of floatable members are employed, disposed in laterally spaced relation, with said connecting means extending between and supported at its ends by the respective floatable members, said housing being supported thereby at the water surface between the two floatable members.
Claim 12
Dependent Claim
14 words
A device according to claim 9, wherein said floatable member carries said receptacle means.
Claim 13
Dependent Claim
20 words
A device according to claim 10, wherein at least one of said floatable members is provided with such receptacle means.
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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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |